자주까먹는 JAVA 형변환

자주까먹는 JAVA 형변환을 모아봤습니다.

북마크해두고 쓰시면 확인하시면 좋을것 같네요.

 

Strinig to int

String from = "111";

int to = Integer.parseInt(from);

 

int to String

int from = 111;

String to = Integer.toString(from);

String to Double, Float

String s_num = "123";
double d_num = Double.valueOf(s_num); //String -> Double
float f_num = Float.valueOf(s_num); //String -> Float

String to Long, Short 

String s_num = "123";
long l_num = Long.parseLong(s_num); //String -> Long
short sh_num = Short.parseShort(s_num); //String -> Short