일단 해보는 코딩/Java
[Java] Wrapper (boxing/unboxing)
eun_zoey2
2022. 8. 3. 16:23
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package Java13;
public class Test11 {
public static void main(String[] args) {
// TODO Auto-generated method stub
String a = "14";
int b = 50;
int c = Integer.parseInt(a); //문자가 숫자로 변환
int d = c + b;
System.out.println(a + b + d);
System.out.println("-----------");
int prime_int = new Integer(11); //Wrapper class =>basic (Unboxing)
System.out.println("값" + prime_int);
Integer pri_int = new Integer(13);
System.out.println("값" + pri_int.doubleValue()); //basic => Wrapper class(Boxing)
Integer wrap_int = pri_int * 10;
System.out.println("값" + wrap_int);
}
}