java 类型转换

整型数转化为字符串

1.String str = Integer.toString(i);
2.String s = String.valueOf(i);
3.String s = "" + i;

字符串转化为整型数

int i = Integer.valueOf(str).intValue();

收集的Java类型转换工具

string->byte 
Byte static byte parseByte(String s)  
byte->string 
Byte static String toString(byte b) 
char->string 
Character static String to String (char c) 
string->Short 
Short static Short parseShort(String s) 
Short->String 
Short static String toString(Short s) 
String->Integer 
Integer static int parseInt(String s) 
Integer->String 
Integer static String tostring(int i) 
String->Long 
Long static long parseLong(String s) 
Long->String 
Long static String toString(Long i) 
String->Float 
Float static float parseFloat(String s) 
Float->String 
Float static String toString(float f) 
String->Double 
Double static double parseDouble(String s) 
Double->String 
Double static String toString(Double)