java各种数字类型与字符串的转换

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();