String类的内存解析

package com.aff.equals;

public class TestString {
    public static void main(String[] args) {
        String str1 = "AA";
        String str2 = "AA";
        String str3 = new String("AA");
        System.out.println(str1 == str2);// true
        System.out.println(str1.equals(str2));// true
        System.out.println(str1 == str3);// false
        System.out.println(str1.equals(str3));// true;
    }
}

输出结果：

true
true
false
true