Java常用的类型转换

1．JAVA中常用数据类型转换函数
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 d) 
2． 类的数据类型转换
//转换string为int
public static int stringToInt(String intstr)
{
Integer integer;
integer = Integer.valueOf(intstr);
return integer.intValue();
}
//转换int为string
public static String intToString(int value)
{
Integer integer = new Integer(value);
return integer.toString();
}
//转换string为float
public static float stringToFloat(String floatstr)
{
Float floatee;
floatee = Float.valueOf(floatstr);
return floatee.floatValue();
}
//转换float为string
public static String floatToString(float value)
{
Float floatee = new Float(value);
return floatee.toString();
}
//change the string type to the sqlDate type
public static java.sql.Date stringToDate(String dateStr)
{
return java.sql.Date.valueOf(dateStr);
}
//change the sqlDate type to the string type
public static String dateToString(java.sql.Date datee)
{
return datee.toString();
}