Java 程式碼

public class Exercise_2 {

	public static void main(String[] args) {
//		state1
		String s1 = "lion";
		String s2 = "lion";
		System.out.println("s1==s2:"+(s1==s2)+"; s1 equals s2:"+s1.equals(s2));
		
//		state2
		s1 = new String("lion");
		s2 = new String("lion");
		System.out.println("s1==s2:"+(s1==s2)+"; s1 equals s2:"+s1.equals(s2));
		
//		state3
		s1 = new String("lion");
		s2 = new String("sheep");
		System.out.println("s1==s2:"+(s1==s2)+"; s1 equals s2:"+s1.equals(s2));		
	}

}

state1: 參考型別字串(String) 在 Stack 與 Heap 中的存放方式