Learn Pain Less

Pawneshwer Gupta

February 02, 2015

1 min

Keywords

List of Keywords in JAVA :

Keywords

Keywords are some special names which are reserved by JAVA, We can not use that names to create variables,classes or methods. They have their different meanings. for example ”class”, its reserved by JAVA. This keyword is used to create new class but if we try to use that name for our class then its impossible.

for example if we make a class like this example :

class class{
  public static void main(String[] args){
    System.out.println("Hello");
  }
}

and when you try to run this code then you will get below error :

_class.java:1: error: <identifier> expected_

as shown in below screenshot.

List of Keywords in JAVA :

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

here is list by categories :

Category	Keywords
Access modifiers	private, protected, public
Class, method, variable modifiers	abstract, class, extends, final, implements, interface, native, new,static, strictfp, synchronized, transient, volatile
Flow control	break, case, continue, default, do, else, for, if, instanceof, return,switch, while
Package control	import, package
Primitive types	boolean, byte, char, double, float, int, long, short
Error handling	assert, catch, finally, throw, throws, try
Enumeration	enum
Others	super, this, void
Unused	const, goto

These are keywords in java, each and every keyword have its special task. for example ’class’ keyword is used to create Classes in java. It is impossible to create Class without using ’class’ keyword.