Tutorial Intro

● About Tutorial

✦Why here - Tutorialix.com

✦Faqs on Learning Java

Introduction

● Java Overview

✦What is Java

✦History of Java

✦Power of Java

✦Uses of Java

✦Java vs C++

✦Java vs Python

✦Java vs C-Sharp

✦Java vs Other Languages

✦JVM and Installation

✦JRE and Installation

✦JDK and Installation

✦JDK vs JVM vs JRE

✦Future of Java

✦Java career and salary

Java Basics

● Java first code

✦Java - Hello world

✦Java Structure

● Java Datatypes

✦Datatypes in Java

✦Primitive vs Non-Primitive

✦Byte in Java

✦Short in Java

✦Int in Java

✦Long in Java

✦Float in Java

✦Double in Java

✦Char in Java

✦Boolean in Java

● Java Variables

✦Variables in Java

✦Types of variables

✦Dynamic variable Initialization

✦Scope and Lifetime of a Variable

● Java Operators

✦Operators in Java

✦Arithmetic operator

✦Assignment operator

✦Bitwise operator

✦Relational operator

✦Logical operator

✦Unary operator

✦Ternary operator

✦instanceof operator

✦Operator precedence

● Java Keywords

✦About keywords

✦Keywords list

● Identifiers & Modifiers

✦Identifiers in java

✦Modifiers in java

● Typecasting

✦Typecasting & its types

✦Upcasting and downcasting

● comments

✦comments in java

● Input and output

✦Input

✦Output in Java

Conditional Statements

● Overview

✦Types and definition

● If

✦If in Java

✦If examples

● Else if

✦Else if syntax & explanation

✦Else if examples-1

✦Else if examples-2

● Nested If

✦Nested If - syntax & uses

✦Nested If - Example - 1

✦Nested If - Example - 2

● if-else ladder

✦if-Else if ladder

✦Else if ladder examples

● Jump Statements

✦Break in Java

✦Continue in Java

✦Return in Java

● Switch

✦Switch in Java

✦Switch examples

● Ternary Operator

✦Ternary operator in Java

✦Ternary operator example

Looping Statements

● Introduction

✦Loops in java

✦comparing Loops

● For Loop

✦For loop in java

✦For loop examples - Set 1

✦For loop examples - Set 2

● For - Each Loop

✦For-Each in java

✦For-Each Examples set -1

✦For-Each Examples set -2

● While Loop

✦While in Java

✦While examples

● Do-while Loop

✦do-while

✦do-while loop examples

● Nested Loops

✦Nested loops in Java

✦Nested loops example - 1

✦Nested loops example - 2

Array

● Array Basics

✦Array Introduction

✦Array basic examples

✦Array length property

✦ArrayIndexOutOfBoundsException

● Multidimensional Array

✦Multidimensional Arrays in Java

✦2D and 3D array in java

✦Jagged Array

✦3D Array examples

✦Jagged array examples

● Array and Objects

✦Array of Objects

✦Arrays as parameter

✦Array in return

● Array methods

✦java.util.array

Strings

● String basics

✦String intro

✦String declaration & Initialization

✦Numbers in String

✦Escape sequence in java

✦String Iteration

✦String concatenation in Java

● StringBuilder and Buffer

✦StringBuilder and StringBuffer

✦StringBuilder Methods

Class, Method & Object

● Class, Method & Object Introduction

✦Class, Method & Object Basics

● Class

✦Class in Java

✦Class members

✦constructors

✦Nested Classes

● Method

✦method in java

✦Parameter & Arguments

✦Return in java

● Object

✦object in java

✦Instance methods & variables

✦object initialization

OOPS

● oops Introduction

✦oops in java

● oops Method

✦Method in oops

✦Method recursion

✦keyword-new

✦Reference variable

● Object in oops

✦Object in oops

● Class in oops

✦class in oops

✦Inheritance & subclass

✦Final and Abstract class

Inheritance

● Inheritance Basics

✦Inheritance

✦Subclass and superclass

● Inheritance Concept

✦Extend keyword

✦Method Overriding

✦super

✦Inheriting constructors

● Types of Inheritance

✦Inheritance types

✦Single Inheritance

✦Multilevel Inheritance

✦Hierarchical inheritance

✦Hybrid inheritance

✦Multiple inheritance

Polymorphism

● Polymorphism in java

✦Polymorphism Intro

✦Polymorphism types

✦Constructor overloading

✦Superclass & subclass

✦@Override

Abstraction

● Abstraction in java

✦Abstraction Intro

✦Abstract class

✦Abstract method

✦Abstract vs Concrete

Encapsulation

● Encapsulation in java

✦Encapsulation Intro

✦Access modifiers

✦Getters and Setters

Interface

● Interface in java

✦Interface Intro

✦Interface methods

✦Multiple interfaces

Exception Handling

● Exceptions in java

✦Exception handling basics

✦Type of exceptions

✦try-catch block

✦Multiple try-catch

✦Throw in Java

✦Finally in Java

File Handling

● File Handling in java

✦Intro

✦Create file

✦Read file

✦Write file

✦Rename file

✦Delete file

✦Create directory

Java Collections

● Collection framework

✦Intro

✦Iterator

● List Interface

✦Overview

✦List iterator

● Arraylist

✦Java Arraylist

● LinkedList

✦Java LinkedList

● Vector

✦Vector in Java

● Stack

✦Stack in Java

● Queue Interface

✦Queue in Java

● PriorityQueue

✦PriorityQueue in Java

✦PriorityQueue constructors

● Queue LinkedList

✦Linkedlist as Queue

● Dequeue Interface

✦Dequeue in Java

● ArrayDeque

✦ArrayDeque in Java

● Set Interface

✦Set in Java

● HashSet

✦Java HashSet

● LinkedHashSet

✦Java LinkedHashSet

● EnumSet

✦Java EnumSet

● SortedSet

✦SortedSet Interface

● TreeSet

✦Java TreeSet

● Map Interface

✦Map in Java

● HashMap

✦Java HashMap

● LinkedHashMap

✦Java LinkedHashMap

● WeakHashMap

✦Java WeakHashMap

● EnumMap

✦Java EnumMap

● SortedMap Interface

✦SortedMap

● TreeMap

✦Java TreeMap

Java Multithreading

● Multithreading

✦Multithreading Intro

✦Thread Lifecycle

✦Creating Thread

✦Starting Thread

✦Joining Thread

✦Naming Thread

✦Scheduling Thread

Java Generics

● Generics

✦Introduction to Generics

✦Generic Classes

✦Generic Interfaces

✦Type Parameters and arguments

✦Generic Methods

✦Wildcards in Generics

✦Unbounded Wildcards

✦Upper Bounded Wildcards

✦Lower Bounded Wildcards

Java Networking

● Networking

✦Networking

✦Socket Programming

✦URL Processing

✦URL Class

✦URLConnection Class

✦HttpURLConnection Class

✦Socket Class

✦ServerSocket Class

✦InetAddress Class

Java Jdbc

● Jdbc in Java

✦JDBC Introduction

✦JDBC Driver

✦JDBC DB Connectivity Steps

✦JDBC Connectivity with Oracle

✦JDBC Connectivity with MySQL

✦JDBC Access without DSN

✦JDBC DriverManager

✦JDBC Connection

✦JDBC Statement

✦JDBC ResultSet

✦JDBC PreparedStatement

✦JDBC ResultSetMetaData

✦JDBC DatabaseMetaData

✦JDBC Store image

✦JDBC Retrieve image

✦JDBC Store file

✦JDBC Retrieve file

✦JDBC CallableStatement

✦JDBC Transaction Management

✦JDBC Batch Processing

Reference

● Math methods

✦math abs(double a)

✦math abs(float a)

✦math abs(int a)

✦math abs(long a)

✦math acos(double a)

✦math addExact(int x, int y)

✦math addExact(long x, long y)

✦math asin(double a)

✦math atan(double a)

✦math atan2(double y, double x)

✦math cbrt(double a)

✦math ceil(double a)

✦math copySign(double magnitude, double sign)

✦math copySign(float magnitude, float sign)

✦math cos(double a)

✦math cosh(double x)

✦math decrementExact(int a)

✦math decrementExact(long a)

✦math exp(double a)

✦math expm1(double x)

✦math floor(double a)

✦math floorDiv(int x, int y)

✦math floorDiv(long x, long y)

✦math floorMod(int x, int y)

✦math floorMod(long x, long y)

✦math getExponent(double d)

✦math getExponent(float f)

✦math hypot(double x, double y)

✦math IEEEremainder(double f1, double f2)

✦math incrementExact(int a)

✦math incrementExact(long a)

✦math log(double a)

✦math log10(double a)

✦math log1p(double x)

✦math max(double a, double b)

✦math max(float a, float b)

✦math max(int a, int b)

✦math max(long a, long b)

✦math min(double a, double b)

✦math min(float a, float b)

✦math min(int a, int b)

✦math min(long a, long b)

✦math multiplyExact(int x, int y)

✦math multiplyExact(long x, long y)

✦math negateExact(int a)

✦math negateExact(long a)

✦math nextAfter(double start, double direction)

✦math nextAfter(float start, double direction)

✦math nextDown(double d)

✦math nextDown(float f)

✦math nextUp(double d)

✦math nextUp(float f)

✦math pow(double a, double b)

✦math random()

✦math rint(double a)

✦math round(double a)

✦math round(float a)

✦math scalb(double d, int scaleFactor)

✦math scalb(float f, int scaleFactor)

✦math signum(double d)

✦math signum(float f)

✦math sin(double a)

✦math sinh(double x)

✦math sqrt(double a)

✦math subtractExact(int x, int y)

✦math subtractExact(long x, long y)

✦math tan(double a)

✦math tanh(double x)

✦math toDegrees(double angrad)

✦math toIntExact(long value)

✦math toRadians(double angdeg)

✦math ulp(double d)

✦math ulp(float f)

● String methods

✦String charAt(int index)

✦String codePointAt(int index)

✦String codePointBefore(int index)

✦String codePointCount(int beginIndex, int endIndex)

✦String compareTo(String anotherString)

✦String compareToIgnoreCase(String str)

✦String concat(String str)

✦String contains(CharSequence s)

✦String contentEquals(CharSequence cs)

✦String contentEquals(StringBuffer sb)

✦String copyValueOf(char[] data)

✦String copyValueOf(char[] data, int offset, int count)

✦String endsWith(String suffix)

✦String equals(Object anObject)

✦String equalsIgnoreCase(String anotherString)

✦String format(Locale l, String format, Object... args)

✦String format(String format, Object... args)

✦String getBytes()

✦String getBytes(Charset charset)

✦String getBytes(int srcBegin, int srcEnd, byte[] dst, int dstBegin)

✦String getBytes(String charsetName)

✦String getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin)

✦String hashCode()

✦String indexOf(int ch)

✦String indexOf(int ch, int fromIndex)

✦String indexOf(String str)

✦String indexOf(String str, int fromIndex)

✦String intern()

✦String isEmpty()

✦String join(CharSequence delimiter, CharSequence... elements)

✦String join(CharSequence delimiter, Iterable<? extends CharSequence> elements)

✦String lastIndexOf(int ch)

✦String lastIndexOf(int ch, int fromIndex)

✦String lastIndexOf(String str)

✦String lastIndexOf(String str, int fromIndex)

✦String length()

✦String matches(String regex)

✦String offsetByCodePoints(int index, int codePointOffset)

✦String regionMatches(boolean ignoreCase, int toffset, String other, int ooffset, int len)

✦String regionMatches(int toffset, String other, int ooffset, int len)

✦String replace(char oldChar, char newChar)

✦String replace(CharSequence target, CharSequence replacement)

✦String replaceAll(String regex, String replacement)

✦String replaceFirst(String regex, String replacement)

✦String split(String regex)

✦String split(String regex, int limit)

✦String startsWith(String prefix)

✦String startsWith(String prefix, int toffset)

✦String subSequence(int beginIndex, int endIndex)

✦String substring(int beginIndex)

✦String substring(int beginIndex, int endIndex)

✦String toCharArray()

✦String toLowerCase()

✦String toLowerCase(Locale locale)

✦String toString()

✦String toUpperCase()

✦String toUpperCase(Locale locale)

✦String trim()

✦String valueOf(boolean b)

✦String valueOf(char c)

✦String valueOf(char[] data)

✦String valueOf(char[] data, int offset, int count)

✦String valueOf(double d)

✦String valueOf(float f)

✦String valueOf(int i)

✦String valueOf(long l)

✦String valueOf(Object obj)

● Array methods

✦array asList(T... a)

✦array binarySearch(byte[] a, byte key)

✦array binarySearch(byte[] a, int fromIndex, int toIndex, byte key)

✦array binarySearch(char[] a, char key)

✦array binarySearch(char[] a, int fromIndex, int toIndex, char key)

✦array binarySearch(double[] a, double key)

✦array binarySearch(double[] a, int fromIndex, int toIndex, double key)

✦array binarySearch(float[] a, float key)

✦array binarySearch(float[] a, int fromIndex, int toIndex, float key)

✦array binarySearch(int[] a, int key)

✦array binarySearch(int[] a, int fromIndex, int toIndex, int key)

✦array binarySearch(long[] a, int fromIndex, int toIndex, long key)

✦array binarySearch(long[] a, long key)

✦array binarySearch(Object[] a, int fromIndex, int toIndex, Object key)

✦array binarySearch(Object[] a, Object key)

✦array binarySearch(short[] a, int fromIndex, int toIndex, short key)

✦array binarySearch(short[] a, short key)

✦array binarySearch(T[] a, int fromIndex, int toIndex, T key, Comparator<? super T> c)

✦array binarySearch(T[] a, T key, Comparator<? super T> c)

✦array copyOf(boolean[] original, int newLength)

✦array copyOf(byte[] original, int newLength)

✦array copyOf(char[] original, int newLength)

✦array copyOf(double[] original, int newLength)

✦array copyOf(float[] original, int newLength)

✦array copyOf(int[] original, int newLength)

✦array copyOf(long[] original, int newLength)

✦array copyOf(short[] original, int newLength)

✦array copyOf(T[] original, int newLength)

✦array copyOf(U[] original, int newLength, Class<? extends T[]> newType)

✦array copyOfRange(boolean[] original, int from, int to)

✦array copyOfRange(byte[] original, int from, int to)

✦array copyOfRange(char[] original, int from, int to)

✦array copyOfRange(double[] original, int from, int to)

✦array copyOfRange(float[] original, int from, int to)

✦array copyOfRange(int[] original, int from, int to)

✦array copyOfRange(long[] original, int from, int to)

✦array copyOfRange(short[] original, int from, int to)

✦array copyOfRange(T[] original, int from, int to)

✦array copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType)

✦array deepEquals(Object[] a1, Object[] a2)

✦array deepHashCode(Object[] a)

✦array deepToString(Object[] a)

✦array equals(boolean[] a, boolean[] a2)

✦array equals(byte[] a, byte[] a2)

✦array equals(char[] a, char[] a2)

✦array equals(double[] a, double[] a2)

✦array equals(float[] a, float[] a2)

✦array equals(int[] a, int[] a2)

✦array equals(long[] a, long[] a2)

✦array equals(Object[] a, Object[] a2)

✦array equals(short[] a, short[] a2)

✦array fill(boolean[] a, boolean val)

✦array fill(boolean[] a, int fromIndex, int toIndex, boolean val)

✦array fill(byte[] a, byte val)

✦array fill(byte[] a, int fromIndex, int toIndex, byte val)

✦array fill(char[] a, char val)

✦array fill(char[] a, int fromIndex, int toIndex, char val)

✦array fill(double[] a, double val)

✦array fill(double[] a, int fromIndex, int toIndex, double val)

✦array fill(float[] a, float val)

✦array fill(float[] a, int fromIndex, int toIndex, float val)

✦array fill(int[] a, int val)

✦array fill(int[] a, int fromIndex, int toIndex, int val)

✦array fill(long[] a, int fromIndex, int toIndex, long val)

✦array fill(long[] a, long val)

✦array fill(Object[] a, int fromIndex, int toIndex, Object val)

✦array fill(Object[] a, Object val)

✦array fill(short[] a, int fromIndex, int toIndex, short val)

✦array fill(short[] a, short val)

✦array hashCode(boolean[] a)

✦array hashCode(byte[] a)

✦array hashCode(char[] a)

✦array hashCode(double[] a)

✦array hashCode(float[] a)

✦array hashCode(int[] a)

✦array hashCode(long[] a)

✦array hashCode(Object[] a)

✦array hashCode(short[] a)

✦array parallelPrefix(double[] array, DoubleBinaryOperator op)

✦array parallelPrefix(double[] array, int fromIndex, int toIndex, DoubleBinaryOperator op)

✦array parallelPrefix(int[] array, IntBinaryOperator op)

✦array parallelPrefix(int[] array, int fromIndex, int toIndex, IntBinaryOperator op)

✦array parallelPrefix(long[] array, int fromIndex, int toIndex, LongBinaryOperator op)

✦array parallelPrefix(long[] array, LongBinaryOperator op)

✦array parallelPrefix(T[] array, BinaryOperator<T> op)

✦array parallelPrefix(T[] array, int fromIndex, int toIndex, BinaryOperator<T> op)

✦array parallelSetAll(double[] array, IntToDoubleFunction generator)

✦array parallelSetAll(int[] array, IntUnaryOperator generator)

✦array parallelSetAll(long[] array, IntToLongFunction generator)

✦array parallelSetAll(T[] array, IntFunction<? extends T> generator)

✦array parallelSort(byte[] a)

✦array parallelSort(byte[] a, int fromIndex, int toIndex)

✦array parallelSort(char[] a)

✦array parallelSort(char[] a, int fromIndex, int toIndex)

✦array parallelSort(double[] a)

✦array parallelSort(double[] a, int fromIndex, int toIndex)

✦array parallelSort(float[] a)

✦array parallelSort(float[] a, int fromIndex, int toIndex)

✦array parallelSort(int[] a)

✦array parallelSort(int[] a, int fromIndex, int toIndex)

✦array parallelSort(long[] a)

✦array parallelSort(long[] a, int fromIndex, int toIndex)

✦array parallelSort(short[] a)

✦array parallelSort(short[] a, int fromIndex, int toIndex)

✦array "static <T extends Comparable<? super T>>

✦array parallelSort(T[] a)

✦array parallelSort(T[] a, Comparator<? super T> cmp)

✦array parallelSort(T[] a, int fromIndex, int toIndex)

✦array parallelSort(T[] a, int fromIndex, int toIndex, Comparator<? super T> cmp)

✦array setAll(double[] array, IntToDoubleFunction generator)

✦array setAll(int[] array, IntUnaryOperator generator)

✦array setAll(long[] array, IntToLongFunction generator)

✦array setAll(T[] array, IntFunction<? extends T> generator)

✦array sort(byte[] a)

✦array sort(byte[] a, int fromIndex, int toIndex)

✦array sort(char[] a)

✦array sort(char[] a, int fromIndex, int toIndex)

✦array sort(double[] a)

✦array sort(double[] a, int fromIndex, int toIndex)

✦array sort(float[] a)

✦array sort(float[] a, int fromIndex, int toIndex)

✦array sort(int[] a)

✦array sort(int[] a, int fromIndex, int toIndex)

✦array sort(long[] a)

✦array sort(long[] a, int fromIndex, int toIndex)

✦array sort(Object[] a)

✦array sort(Object[] a, int fromIndex, int toIndex)

✦array sort(short[] a)

✦array sort(short[] a, int fromIndex, int toIndex)

✦array sort(T[] a, Comparator<? super T> c)

✦array sort(T[] a, int fromIndex, int toIndex, Comparator<? super T> c)

✦array spliterator(double[] array)

✦array spliterator(double[] array, int startInclusive, int endExclusive)

✦array spliterator(int[] array)

✦array spliterator(int[] array, int startInclusive, int endExclusive)

✦array spliterator(long[] array)

✦array spliterator(long[] array, int startInclusive, int endExclusive)

✦array spliterator(T[] array)

✦array spliterator(T[] array, int startInclusive, int endExclusive)

✦array stream(double[] array)

✦array stream(double[] array, int startInclusive, int endExclusive)

✦array stream(int[] array)

✦array stream(int[] array, int startInclusive, int endExclusive)

✦array stream(long[] array)

✦array stream(long[] array, int startInclusive, int endExclusive)

✦array stream(T[] array)

✦array stream(T[] array, int startInclusive, int endExclusive)

✦array toString(boolean[] a)

✦array toString(byte[] a)

✦array toString(char[] a)

✦array toString(double[] a)

✦array toString(float[] a)

✦array toString(int[] a)

✦array toString(long[] a)

✦array toString(Object[] a)

✦array toString(short[] a)

● Scanner methods

✦scanner close()

✦scanner delimiter()

✦scanner findInLine(Pattern pattern)

✦scanner findInLine(String pattern)

✦scanner findWithinHorizon(Pattern pattern, int horizon)

✦scanner findWithinHorizon(String pattern, int horizon)

✦scanner hasNext()

✦scanner hasNext(Pattern pattern)

✦scanner hasNext(String pattern)

✦scanner hasNextBigDecimal()

✦scanner hasNextBigInteger()

✦scanner hasNextBigInteger(int radix)

✦scanner hasNextBoolean()

✦scanner hasNextByte()

✦scanner hasNextByte(int radix)

✦scanner hasNextDouble()

✦scanner hasNextFloat()

✦scanner hasNextInt()

✦scanner hasNextInt(int radix)

✦scanner hasNextLine()

✦scanner hasNextLong()

✦scanner hasNextLong(int radix)

✦scanner hasNextShort()

✦scanner hasNextShort(int radix)

✦scanner ioException()

✦scanner locale()

✦scanner match()

✦scanner next()

✦scanner next(Pattern pattern)

✦scanner next(String pattern)

✦scanner nextBigDecimal()

✦scanner nextBigInteger()

✦scanner nextBigInteger(int radix)

✦scanner nextBoolean()

✦scanner nextByte()

✦scanner nextByte(int radix)

✦scanner nextDouble()

✦scanner nextFloat()

✦scanner nextInt()

✦scanner nextInt(int radix)

✦scanner nextLine()

✦scanner nextLong()

✦scanner nextLong(int radix)

✦scanner nextShort()

✦scanner nextShort(int radix)

✦scanner radix()

✦scanner remove()

✦scanner reset()

✦scanner skip(Pattern pattern)

✦scanner skip(String pattern)

✦scanner toString()

✦scanner useDelimiter(Pattern pattern)

✦scanner useDelimiter(String pattern)

✦scanner useLocale(Locale locale)

✦scanner useRadix(int radix)

● Collections methods

✦collections addAll(Collection<? super T> c, T... elements)

✦collections asLifoQueue(Deque<T> deque)

✦collections binarySearch(List<? extends Comparable<? super T>> list, T key)

✦collections binarySearch(List<? extends T> list, T key, Comparator<? super T> c)

✦collections checkedCollection(Collection<E> c, Class<E> type)

✦collections checkedList(List<E> list, Class<E> type)

✦collections checkedMap(Map<K,V> m, Class<K> keyType, Class<V> valueType)

✦collections checkedNavigableMap(NavigableMap<K,V> m, Class<K> keyType, Class<V> valueType)

✦collections checkedNavigableSet(NavigableSet<E> s, Class<E> type)

✦collections checkedQueue(Queue<E> queue, Class<E> type)

✦collections checkedSet(Set<E> s, Class<E> type)

✦collections checkedSortedMap(SortedMap<K,V> m, Class<K> keyType, Class<V> valueType)

✦collections checkedSortedSet(SortedSet<E> s, Class<E> type)

✦collections copy(List<? super T> dest, List<? extends T> src)

✦collections disjoint(Collection<?> c1, Collection<?> c2)

✦collections emptyEnumeration()

✦collections emptyIterator()

✦collections emptyList()

✦collections emptyListIterator()

✦collections emptyMap()

✦collections emptyNavigableMap()

✦collections emptyNavigableSet()

✦collections emptySet()

✦collections emptySortedMap()

✦collections emptySortedSet()

✦collections enumeration(Collection<T> c)

✦collections fill(List<? super T> list, T obj)

✦collections frequency(Collection<?> c, Object o)

✦collections indexOfSubList(List<?> source, List<?> target)

✦collections lastIndexOfSubList(List<?> source, List<?> target)

✦collections list(Enumeration<T> e)

✦collections "static <T extends Object & Comparable<? super T>>

✦collections max(Collection<? extends T> coll)

✦collections max(Collection<? extends T> coll, Comparator<? super T> comp)

✦collections min(Collection<? extends T> coll)

✦collections min(Collection<? extends T> coll, Comparator<? super T> comp)

✦collections nCopies(int n, T o)

✦collections newSetFromMap(Map<E,Boolean> map)

✦collections replaceAll(List<T> list, T oldVal, T newVal)

✦collections reverse(List<?> list)

✦collections reverseOrder()

✦collections reverseOrder(Comparator<T> cmp)

✦collections rotate(List<?> list, int distance)

✦collections shuffle(List<?> list)

✦collections shuffle(List<?> list, Random rnd)

✦collections singleton(T o)

✦collections singletonList(T o)

✦collections singletonMap(K key, V value)

✦collections "static <T extends Comparable<? super T>>

✦collections sort(List<T> list)

✦collections sort(List<T> list, Comparator<? super T> c)

✦collections swap(List<?> list, int i, int j)

✦collections synchronizedCollection(Collection<T> c)

✦collections synchronizedList(List<T> list)

✦collections synchronizedMap(Map<K,V> m)

✦collections synchronizedNavigableMap(NavigableMap<K,V> m)

✦collections synchronizedNavigableSet(NavigableSet<T> s)

✦collections synchronizedSet(Set<T> s)

✦collections synchronizedSortedMap(SortedMap<K,V> m)

✦collections synchronizedSortedSet(SortedSet<T> s)

✦collections unmodifiableCollection(Collection<? extends T> c)

✦collections unmodifiableList(List<? extends T> list)

✦collections unmodifiableMap(Map<? extends K,? extends V> m)

✦collections unmodifiableNavigableMap(NavigableMap<K,? extends V> m)

✦collections unmodifiableNavigableSet(NavigableSet<T> s)

✦collections unmodifiableSet(Set<? extends T> s)

✦collections unmodifiableSortedMap(SortedMap<K,? extends V> m)

✦collections unmodifiableSortedSet(SortedSet<T> s)

● Set methods

✦set add(E e)

✦set addAll(Collection<? extends E> c)

✦set clear()

✦set contains(Object o)

✦set containsAll(Collection<?> c)

✦set equals(Object o)

✦set hashCode()

✦set isEmpty()

✦set iterator()

✦set remove(Object o)

✦set removeAll(Collection<?> c)

✦set retainAll(Collection<?> c)

✦set size()

✦set spliterator()

✦set toArray()

✦set toArray(T[] a)

● List methods

✦list add(E e)

✦list add(int index, E element)

✦list addAll(Collection<? extends E> c)

✦list addAll(int index, Collection<? extends E> c)

✦list clear()

✦list contains(Object o)

✦list containsAll(Collection<?> c)

✦list equals(Object o)

✦list get(int index)

✦list hashCode()

✦list indexOf(Object o)

✦list isEmpty()

✦list iterator()

✦list lastIndexOf(Object o)

✦list listIterator()

✦list listIterator(int index)

✦list remove(int index)

✦list remove(Object o)

✦list removeAll(Collection<?> c)

✦list replaceAll(UnaryOperator<E> operator)

✦list retainAll(Collection<?> c)

✦list set(int index, E element)

✦list size()

✦list sort(Comparator<? super E> c)

✦list spliterator()

✦list subList(int fromIndex, int toIndex)

✦list toArray()

✦list toArray(T[] a)

● Queue methods

✦queue add(E e)

✦queue element()

✦queue offer(E e)

✦queue peek()

✦queue poll()

✦queue remove()

● Map methods

✦map clear()

✦map compute(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)

✦map computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)

✦map computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)

✦map containsKey(Object key)

✦map containsValue(Object value)

✦map entrySet()

✦map equals(Object o)

✦map forEach(BiConsumer<? super K,? super V> action)

✦map get(Object key)

✦map getOrDefault(Object key, V defaultValue)

✦map hashCode()

✦map isEmpty()

✦map keySet()

✦map merge(K key, V value, BiFunction<? super V,? super V,? extends V> remappingFunction)

✦map put(K key, V value)

✦map putAll(Map<? extends K,? extends V> m)

✦map putIfAbsent(K key, V value)

✦map remove(Object key)

✦map remove(Object key, Object value)

✦map replace(K key, V value)

✦map replace(K key, V oldValue, V newValue)

✦map replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦map size()

✦map values()

● Sortedset methods

✦sortedset comparator()

✦sortedset first()

✦sortedset headSet(E toElement)

✦sortedset last()

✦sortedset spliterator()

✦sortedset subSet(E fromElement, E toElement)

✦sortedset tailSet(E fromElement)

● Sortedmap methods

✦Sortedmap comparator()

✦Sortedmap entrySet()

✦Sortedmap firstKey()

✦Sortedmap headMap(K toKey)

✦Sortedmap keySet()

✦Sortedmap lastKey()

✦Sortedmap subMap(K fromKey, K toKey)

✦Sortedmap tailMap(K fromKey)

✦Sortedmap values()

● Arraylist methods

✦Arraylist add(E e)

✦Arraylist add(int index, E element)

✦Arraylist addAll(Collection<? extends E> c)

✦Arraylist addAll(int index, Collection<? extends E> c)

✦Arraylist clear()

✦Arraylist clone()

✦Arraylist contains(Object o)

✦Arraylist ensureCapacity(int minCapacity)

✦Arraylist forEach(Consumer<? super E> action)

✦Arraylist get(int index)

✦Arraylist indexOf(Object o)

✦Arraylist isEmpty()

✦Arraylist iterator()

✦Arraylist lastIndexOf(Object o)

✦Arraylist listIterator()

✦Arraylist listIterator(int index)

✦Arraylist remove(int index)

✦Arraylist remove(Object o)

✦Arraylist removeAll(Collection<?> c)

✦Arraylist removeIf(Predicate<? super E> filter)

✦Arraylist removeRange(int fromIndex, int toIndex)

✦Arraylist replaceAll(UnaryOperator<E> operator)

✦Arraylist retainAll(Collection<?> c)

✦Arraylist set(int index, E element)

✦Arraylist size()

✦Arraylist sort(Comparator<? super E> c)

✦Arraylist spliterator()

✦Arraylist subList(int fromIndex, int toIndex)

✦Arraylist toArray()

✦Arraylist toArray(T[] a)

✦Arraylist trimToSize()

● Linkedlist methods

✦linkedlist add(E e)

✦linkedlist add(int index, E element)

✦linkedlist addAll(Collection<? extends E> c)

✦linkedlist addAll(int index, Collection<? extends E> c)

✦linkedlist addFirst(E e)

✦linkedlist addLast(E e)

✦linkedlist clear()

✦linkedlist clone()

✦linkedlist contains(Object o)

✦linkedlist descendingIterator()

✦linkedlist element()

✦linkedlist get(int index)

✦linkedlist getFirst()

✦linkedlist getLast()

✦linkedlist indexOf(Object o)

✦linkedlist lastIndexOf(Object o)

✦linkedlist listIterator(int index)

✦linkedlist offer(E e)

✦linkedlist offerFirst(E e)

✦linkedlist offerLast(E e)

✦linkedlist peek()

✦linkedlist peekFirst()

✦linkedlist peekLast()

✦linkedlist poll()

✦linkedlist pollFirst()

✦linkedlist pollLast()

✦linkedlist pop()

✦linkedlist push(E e)

✦linkedlist remove()

✦linkedlist remove(int index)

✦linkedlist remove(Object o)

✦linkedlist removeFirst()

✦linkedlist removeFirstOccurrence(Object o)

✦linkedlist removeLast()

✦linkedlist removeLastOccurrence(Object o)

✦linkedlist set(int index, E element)

✦linkedlist size()

✦linkedlist spliterator()

✦linkedlist toArray()

✦linkedlist toArray(T[] a)

● Vector methods

✦vector add(E e)

✦vector add(int index, E element)

✦vector addAll(Collection<? extends E> c)

✦vector addAll(int index, Collection<? extends E> c)

✦vector addElement(E obj)

✦vector capacity()

✦vector clear()

✦vector clone()

✦vector contains(Object o)

✦vector containsAll(Collection<?> c)

✦vector copyInto(Object[] anArray)

✦vector elementAt(int index)

✦vector elements()

✦vector ensureCapacity(int minCapacity)

✦vector equals(Object o)

✦vector firstElement()

✦vector forEach(Consumer<? super E> action)

✦vector get(int index)

✦vector hashCode()

✦vector indexOf(Object o)

✦vector indexOf(Object o, int index)

✦vector insertElementAt(E obj, int index)

✦vector isEmpty()

✦vector iterator()

✦vector lastElement()

✦vector lastIndexOf(Object o)

✦vector lastIndexOf(Object o, int index)

✦vector listIterator()

✦vector listIterator(int index)

✦vector remove(int index)

✦vector remove(Object o)

✦vector removeAll(Collection<?> c)

✦vector removeAllElements()

✦vector removeElement(Object obj)

✦vector removeElementAt(int index)

✦vector removeIf(Predicate<? super E> filter)

✦vector removeRange(int fromIndex, int toIndex)

✦vector replaceAll(UnaryOperator<E> operator)

✦vector retainAll(Collection<?> c)

✦vector set(int index, E element)

✦vector setElementAt(E obj, int index)

✦vector setSize(int newSize)

✦vector size()

✦vector sort(Comparator<? super E> c)

✦vector spliterator()

✦vector subList(int fromIndex, int toIndex)

✦vector toArray()

✦vector toArray(T[] a)

✦vector toString()

✦vector trimToSize()

● Hashset methods

✦hashset add(E e)

✦hashset clear()

✦hashset clone()

✦hashset contains(Object o)

✦hashset isEmpty()

✦hashset iterator()

✦hashset remove(Object o)

✦hashset size()

✦hashset spliterator()

● Treeset methods

✦treeset add(E e)

✦treeset addAll(Collection<? extends E> c)

✦treeset ceiling(E e)

✦treeset clear()

✦treeset clone()

✦treeset comparator()

✦treeset contains(Object o)

✦treeset descendingIterator()

✦treeset descendingSet()

✦treeset first()

✦treeset floor(E e)

✦treeset headSet(E toElement)

✦treeset headSet(E toElement, boolean inclusive)

✦treeset higher(E e)

✦treeset isEmpty()

✦treeset iterator()

✦treeset last()

✦treeset lower(E e)

✦treeset pollFirst()

✦treeset pollLast()

✦treeset remove(Object o)

✦treeset size()

✦treeset spliterator()

✦treeset subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive)

✦treeset subSet(E fromElement, E toElement)

✦treeset tailSet(E fromElement)

✦treeset tailSet(E fromElement, boolean inclusive)

● Hashmap methods

✦hashmap clear()

✦hashmap clone()

✦hashmap compute(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)

✦hashmap computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)

✦hashmap computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)

✦hashmap containsKey(Object key)

✦hashmap containsValue(Object value)

✦hashmap entrySet()

✦hashmap forEach(BiConsumer<? super K,? super V> action)

✦hashmap get(Object key)

✦hashmap getOrDefault(Object key, V defaultValue)

✦hashmap isEmpty()

✦hashmap keySet()

✦hashmap merge(K key, V value, BiFunction<? super V,? super V,? extends V> remappingFunction)

✦hashmap put(K key, V value)

✦hashmap putAll(Map<? extends K,? extends V> m)

✦hashmap putIfAbsent(K key, V value)

✦hashmap remove(Object key)

✦hashmap remove(Object key, Object value)

✦hashmap replace(K key, V value)

✦hashmap replace(K key, V oldValue, V newValue)

✦hashmap replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦hashmap size()

✦hashmap values()

● Linkedhashmap methods

✦linkedhashmap clear()

✦linkedhashmap containsValue(Object value)

✦linkedhashmap entrySet()

✦linkedhashmap forEach(BiConsumer<? super K,? super V> action)

✦linkedhashmap get(Object key)

✦linkedhashmap getOrDefault(Object key, V defaultValue)

✦linkedhashmap keySet()

✦linkedhashmap removeEldestEntry(Map.Entry<K,V> eldest)

✦linkedhashmap replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦linkedhashmap values()

● Treemap methods

✦treemap ceilingEntry(K key)

✦treemap ceilingKey(K key)

✦treemap clear()

✦treemap clone()

✦treemap comparator()

✦treemap containsKey(Object key)

✦treemap containsValue(Object value)

✦treemap descendingKeySet()

✦treemap descendingMap()

✦treemap entrySet()

✦treemap firstEntry()

✦treemap firstKey()

✦treemap floorEntry(K key)

✦treemap floorKey(K key)

✦treemap forEach(BiConsumer<? super K,? super V> action)

✦treemap get(Object key)

✦treemap headMap(K toKey)

✦treemap headMap(K toKey, boolean inclusive)

✦treemap higherEntry(K key)

✦treemap higherKey(K key)

✦treemap keySet()

✦treemap lastEntry()

✦treemap lastKey()

✦treemap lowerEntry(K key)

✦treemap lowerKey(K key)

✦treemap navigableKeySet()

✦treemap pollFirstEntry()

✦treemap pollLastEntry()

✦treemap put(K key, V value)

✦treemap putAll(Map<? extends K,? extends V> map)

✦treemap remove(Object key)

✦treemap replace(K key, V value)

✦treemap replace(K key, V oldValue, V newValue)

✦treemap replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦treemap size()

✦treemap subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive)

✦treemap subMap(K fromKey, K toKey)

✦treemap tailMap(K fromKey)

✦treemap tailMap(K fromKey, boolean inclusive)

✦treemap values()

● Identifyhashmap methods

✦identifyhashmap clear()

✦identifyhashmap clone()

✦identifyhashmap containsKey(Object key)

✦identifyhashmap containsValue(Object value)

✦identifyhashmap entrySet()

✦identifyhashmap equals(Object o)

✦identifyhashmap forEach(BiConsumer<? super K,? super V> action)

✦identifyhashmap get(Object key)

✦identifyhashmap hashCode()

✦identifyhashmap isEmpty()

✦identifyhashmap keySet()

✦identifyhashmap put(K key, V value)

✦identifyhashmap putAll(Map<? extends K,? extends V> m)

✦identifyhashmap remove(Object key)

✦identifyhashmap replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦identifyhashmap size()

✦identifyhashmap values()

● Weakhashmap methods

✦weakhashmap clear()

✦weakhashmap containsKey(Object key)

✦weakhashmap containsValue(Object value)

✦weakhashmap entrySet()

✦weakhashmap forEach(BiConsumer<? super K,? super V> action)

✦weakhashmap get(Object key)

✦weakhashmap isEmpty()

✦weakhashmap keySet()

✦weakhashmap put(K key, V value)

✦weakhashmap putAll(Map<? extends K,? extends V> m)

✦weakhashmap remove(Object key)

✦weakhashmap replaceAll(BiFunction<? super K,? super V,? extends V> function)

✦weakhashmap size()

✦weakhashmap values()

● Enumset methods

✦enumset clone()

✦enumset complementOf(EnumSet<E> s)

✦enumset copyOf(Collection<E> c)

✦enumset copyOf(EnumSet<E> s)

✦enumset noneOf(Class<E> elementType)

✦enumset of(E e)

✦enumset of(E first, E... rest)

✦enumset of(E e1, E e2)

✦enumset of(E e1, E e2, E e3)

✦enumset of(E e1, E e2, E e3, E e4)

✦enumset of(E e1, E e2, E e3, E e4, E e5)

✦enumset range(E from, E to)

● Enummap methods

✦enummap clear()

✦enummap clone()

✦enummap containsKey(Object key)

✦enummap containsValue(Object value)

✦enummap entrySet()

✦enummap equals(Object o)

✦enummap get(Object key)

✦enummap hashCode()

✦enummap keySet()

✦enummap put(K key, V value)

✦enummap putAll(Map<? extends K,? extends V> m)

✦enummap remove(Object key)

✦enummap size()

✦enummap values()

● Arraydequeue methods

✦arraydeque add(E e)

✦arraydeque addFirst(E e)

✦arraydeque addLast(E e)

✦arraydeque clear()

✦arraydeque clone()

✦arraydeque contains(Object o)

✦arraydeque descendingIterator()

✦arraydeque element()

✦arraydeque getFirst()

✦arraydeque getLast()

✦arraydeque isEmpty()

✦arraydeque iterator()

✦arraydeque offer(E e)

✦arraydeque offerFirst(E e)

✦arraydeque offerLast(E e)

✦arraydeque peek()

✦arraydeque peekFirst()

✦arraydeque peekLast()

✦arraydeque poll()

✦arraydeque pollFirst()

✦arraydeque pollLast()

✦arraydeque pop()

✦arraydeque push(E e)

✦arraydeque remove()

✦arraydeque remove(Object o)

✦arraydeque removeFirst()

✦arraydeque removeFirstOccurrence(Object o)

✦arraydeque removeLast()

✦arraydeque removeLastOccurrence(Object o)

✦arraydeque size()

✦arraydeque spliterator()

✦arraydeque toArray()

✦arraydeque toArray(T[] a)

● Priorityqueue methods

✦priorityqueue add(E e)

✦priorityqueue clear()

✦priorityqueue comparator()

✦priorityqueue contains(Object o)

✦priorityqueue iterator()

✦priorityqueue offer(E e)

✦priorityqueue peek()

✦priorityqueue poll()

✦priorityqueue remove(Object o)

✦priorityqueue size()

✦priorityqueue spliterator()

✦priorityqueue toArray()

✦priorityqueue toArray(T[] a)

Java Keywords → Keywords list

Keywords in Java

Keywords are reserved words in Java that have special meaning to the compiler. They cannot be used as identifiers for variables, classes, methods, or other constructs. lists the keywords in Java: Keywords list

    abstract
        assert
        boolean
        break
        byte
case
        catch
        char
        class
        const
continue
        default
        do
        double
        else
enum
        extends
        false
        final
        finally
float
        for
        goto
        if
        implements
import
        instanceof
        int
        interface
        long
native
        new
        null
        package
        private
protected
        public
        return
        short
        static
strictfp
        super
        switch
        synchronized
        this
throw
        throws
        transient
        true
        try

        void
        volatile
        while

    

The keywords in Java are case-sensitive. For example, class is a different keyword from Class. Keywords cannot be used as identifiers for variables, classes, methods, or other constructs. For example, you cannot declare a variable named class. It is important to be aware of the keywords in Java when writing code. Using a keyword as an identifier can cause errors in your code.

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