JAVA内存存储分配粗略讲解

以String类型为例：
String s1 = "ABC";
String s2 = "ABC";
String s3 = new String("ABC");
String s4 = new String("ABC");

 System.out.println(s1.equals(s2));

        System.out.println(s1.equals(s3));

        System.out.println(s1.equals(s4));

        System.out.println(s3.equals(s4));

        System.out.println(s1 == s2);

        System.out.println(s1 == s3);

 

true

true

true

true

true

false

S1

S2

S3

ABC

ABC

S4

ABC