Appendix B. Comparing Java and C keywords

Appendix B. Comparing Java and C# keywords

Table B.1 shows the closest matching C# equivalents to the 49 Java keywords.

Table B.1. C# equivalents to Java keywords

Java keyword	Closest C# equivalent	Comments
abstract	abstract
assert [3]	-	Use the Debug.Assert static method in C# instead
boolean	bool
break	break
byte	sbyte	An sbyte is a signed 8-bit numeric simple type, while byte is an unsigned 8-bit numeric simple type in C# “ Java's primitive types are all signed
case	case
catch	catch
char	char
class	class
const*	const	This keyword is reserved in Java, but not used “ in C#, const is used to declare a constant
continue	continue
default	default
do	do
double	double
else	else
extends	-	In C#, : is used to denote class inheritance instead of using the extends keyword
native	extern
final	const / readonly	Java final variables are similar to C# constants and read-only variables , though there are differences between the latter two
finally	finally
float	float
for	for
goto [1]	goto	Java's goto keyword has no functionality although it is reserved “ C#'s goto keyword can be used to 'jump' to a labeled statement
if	if
implements	-	In C#, : is used to denote interface implementation instead of using the implements keyword
import	using
instanceof	is
int	int
interface	interface
long	long
native	extern
new	new
package	namespace
private	private
protected	protected
public	public
return	return
short	short
static	static
strictfp [2]	-
super	base
switch	switch
synchronized	lock
this	this
throw	throw
throws	-	All exceptions in C# are unchecked “ unchecked exceptions are automatically propagated backwards to the calling method if not handled without the need to specify the throws clause in the method prototype
transient	-
try	try
void	void
volatile	volatile
while	while

^[3] added into the Java language in Java 2 SDK 1.4

^[1] reserved but not used in Java

^[2] added into the Java language in Java 2