Osnovni tipi


Tip	Pomnjeno	Primer
byte	signed 8-bit	127
short	signed 16-bit	32767
int	signed 32-bit	2147483647
long	signed 64-bit	2147483647
boolean	1 bit	true ali false
float	32-bit (IEEE-754)	3.4e+38
double	64-bit (IEEE-754)	3.4e+38
char	16-bit (unicode)	'\n'

Deklaracija spremenljivk in pretvorbe

        class Test {
           public static void main(String argv[ ]) {
                int i,j;
                double a=5.0;
                boolean t=true;
                
                System.err.println(a);
                i=(int)a; // obvezna eksplicitna pretvorba
                // t=(boolean)i; - napačna pretvorba!
                j=i+1;
                a=j; // ni potrebna eksplicitna pretvorba
                System.err.println(t);
                System.err.println(j);
           }
        }