Java Keywords Reference

Java has a set of reserved words that cannot be used as variable names.

Keyword	Description
abstract	Declares an abstract class or method.
break	Breaks out of a loop or switch.
class	Declares a new class.
extends	Indicates that a class is a subclass of another.
final	Indicates a value cannot be changed.
implements	Indicates that a class implements an interface.
import	Brings in external classes or packages.
instanceof	Checks if an object is an instance of a specific class.
interface	Declares a new interface.
new	Creates a new object.
package	Declares a package.
private	Only accessible within the class.
protected	Accessible in package and subclasses.
public	Accessible from anywhere.
return	Returns a value from a method.
static	Belongs to the class, not an object.
super	Refers to the superclass object.
this	Refers to the current object.
throw / throws	Used for handling exceptions.
void	Specifies that a method has no return value.

Checking Keywords

This list is not exhaustive. For a full list of all 50+ keywords, refer to the official Java Documentation.