[JAVA] [CONVERT] 형변환

 

String 형변환

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String -> Int 형변환

String s = "1";

//string -> int 1번방식
int i = Integer.parseInt(s);
		
//string -> int 2번방식
int i2 = Integer.valueOf(s);

1
1

String -> double 형변환

String s_num = "1";

//String -> Double 1번방식
double d_num = Double.parseDouble(s_num);

//String -> Double 2번방식
double d_num2 = Double.valueOf(s_num);

1.0
1.0

String -> Float 형변환

String s_num = "1";

//String -> Float 1번방식
float f_num = Float.parseFloat(s_num);

//String -> Float 2번방식
float f_num2 = Float.valueOf(s_num);

1.0
1.0

String -> Long 형변환

String s_num = "1";

//String -> long 1번방식
long l_num = Long.parseLong(s_num);

//String -> long 2번방식
long l_num2 = Long.valueOf(s_num);

1
1

String -> Short 형변환

String num = "1";

//String -> Short 1번방식
short s_num = Short.parseShort(num);

//String -> Short 2번방식
short s_num2 = Short.valueOf(num);

1
1

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Int형 변환

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Int -> String 형변환

int num = 1;

//int -> String 1번 방식
String s = String.valueOf(num);

//int -> String 2번 방식
String s2 = Integer.toString(num);

1
1