문제

기본자료형과 참조자료형을 함께 사용할 때 메모리에 어떻게 저장되는지 살펴보는 문제입니다 실행순서를 클릭하세요

primitive=100 reference=200 string=300
primitive=100 reference=300 string=300
primitive=100 reference=400 string=400
primitive=100 reference=100 string=400
primitive=500 reference=500 string=400

프로그램 코드

	public class AutoboxingUnboxing

1		public static void main( String[] args ) {

2			int primitiveInt = 100;

3			Integer referenceInt = 200;

4			String stringInt = "300";

5			System.out.println( "primitive=" + primitiveInt + " reference=" + referenceInt + " string=" +  stringInt );

6			referenceInt =

7			              Integer.parseInt( stringInt );

8			System.out.println( "primitive=" + primitiveInt + " reference=" + referenceInt + " string=" +  stringInt );

9			referenceInt = 400;

10			stringInt =

11			           referenceInt.toString();

12			System.out.println( "primitive=" + primitiveInt + " reference=" + referenceInt + " string=" +  stringInt );

13			referenceInt = primitiveInt;

14			System.out.println( "primitive=" + primitiveInt + " reference=" + referenceInt + " string=" +  stringInt );

15			referenceInt = 500;

16			primitiveInt = referenceInt;

17			System.out.println( "primitive=" + primitiveInt + " reference=" + referenceInt + " string=" +  stringInt );

18		}