java 数字转换成字符串与数字转换成字符串

各种数字类型转换成字符串型：

String s = String.valueOf( value); // 其中 value
为任意一种数字类型。

字符串型转换成各种数字类型：

String s = "169";
byte b =
Byte.parseByte( s );
short t = Short.parseShort( s );
int i =
Integer.parseInt( s );
long l = Long.parseLong( s );
Float f =
Float.parseFloat( s );
Double d = Double.parseDouble( s );


数字类型与数字类对象之间的转换：

byte b = 169;
Byte bo = new Byte( b );

b = bo.byteValue();

short t = 169;
Short to = new Short( t );

t = to.shortValue();

int i = 169;
b = bo.byteValue();


short t = 169;
Short to = new Short( t );
t = to.shortValue();


int i = 169;
Integer io = new Integer( i );
i = io.intValue();


long l = 169;
Long lo = new Long( l );
l = lo.longValue();


float f = 169f;
Float fo = new Float( f );
f = fo.floatValue();


double d = 169f;
Double dObj = new Double( d );
d =
dObj.doubleValue();