abstract

It declares that a class or method is abstract

assert

Used to specify assertions

boolean

Declares that variable is Boolean type

break

Used to exit a loop before end of the loop is reached

byte

Declares that variable is byte type

case

To represent different conditions in switch statement

catch

Used for handling exceptions, i.e., capture the exceptions thrown by

some actions

char

Declares that variable is character type

class

Signals the beginning of a class definition

const

This keyword is reserved by Java but now it is not in use

continue

Prematurely return to the beginning of a loop

default

Default action in switch statement

do

Begins a do while loop

double

Declares that variable is double type

else

Signals the code to be executed when if condition executes to false

extends

Specifies the class base from which the correct class is inherited

final

Declares that a class may not be extended or that a field or method may

not be overridden

finally

Declares a block of code guaranteed to be executed

float

Declares a floating point variable

for Start a for loop

goto

This keyword is reserved by Java but now it is not in use

if

Keyword to represent conditional statement

implements

Declares that this class implements the given interface

import

permits access to a class or group of classes in a package

Instance of

tests whether an object is an instance of a class

int

Declares an integer variable

interface

signals the beginning of an interface definition

long

Declares a long integer variable

native

Declares that a method that is implemented in native code

new

Allocates memory to an object dynamically

package

Defines the package to which this source code file belongs

private

Declares a method or member variable to be private

protected

Declares a class, method or member variable to be protected

public

Declares a class, method or member variable to be public

return

Returns a value from a method

short

Declares a short integer variable

static

Declares that a field or a method belongs to a class rather than an object

strictfp

To declare that a method or class must be run with exact IEEE 754 semantics

super

A reference to the parent of the current object

switch

Tests for the truth of various possible cases

synchronized

Indicates that a section of code is not thread-safe

this

A reference to the current object

throws

Declares the exceptions thrown by a method

transient

Data should not be serialized

try

Attempt an operation that may throw an exception

void

Declare that a method does not return a value

volatile

Warns the compiler that a variable changes asynchronously

while

Begins a while loop