三、运行时的动态常量（学习笔记）

public class Test {

    public static void main(String[] args) {
        String s1 = "abc";
        String s2 = "abc";
        String s3 = new String("abc");
        String s4 = new String("abc");
        System.out.println(s1==s2);
        System.out.println(s1==s3);
        System.out.println(s1==s3.intern());
        System.out.println(s3==s4);
    }



}