Java Reseved Keywords

Keywords are identifiers like public, static and class that have a special meaning inside Java source code and outside of comments and Strings. Four keywords are used in Hello World, public, static, void and class.
Keywords are reserved for their intended use and cannot be used by the programmer for variable or method names.
There are fifty reserved keywords in Java 1.1, 51 in Java 1.2, 52 in Java 1.4, and 54 in Java 5. The forty-eight that are actually used in are listed below. Don't worry if the purposes of the keywords seem a little opaque at this point. They will all be explained in much greater detail later.

Keywords Used in Java

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

Note:- true and false appear to be missing from this list. In fact, they are not keywords but rather boolean literals. You still can't use them as a variable name though.

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