java/JVM/src/com/cpucode/java/string/table/StringOnly.java at master · eggfly/java · GitHub

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/**

* User: cpucode

* Date: 2021/1/9

* Time: 10:17

* Github: https://github.com/CPU-Code

* CSDN: https://blog.csdn.net/qq_44226094

*/

package com.cpucode.java.string.table;

//String的基本使用:体现String的不可变性

public class StringOnly {

public static void main(String[] args) {

test1();

test2();

test3();

}

private static void test1(){

System.out.println("test1 开始 ");

//字面量定义的方式，存储在字符串常量池中

String s1 = "cpucpu";

String s2 = "codecode";

s2 = "cpucode";

//判断地址：

System.out.println(s1 == s2);

System.out.println(s1);

System.out.println(s2);

System.out.println("test1 结束");

System.out.println();

}

private static void test2(){

System.out.println("test2 开始 ");

String s1 = "cpu";

String s2 = "code";

s2 += "test";

System.out.println(s1);

System.out.println(s2);

System.out.println("test2 结束");

System.out.println();

}

private static void test3(){

System.out.println("test3 开始 ");

String s1 = "cauCode";

String s2 = s1.replace('a','p');

System.out.println(s1);

System.out.println(s2);

System.out.println("test3 结束");

System.out.println();

}

}