String常量池-练习1
作者:互联网
public class Javatest70 { /** * String常量池 * 代码输出结果 * =========使用双引号直接创建字符串======= * a5e75 * 9e0ad * 31a7df * 31a7df * equals:true * name==name2: true * * =========使用构造方法创建字符串======= * 31a7df * 31a7df * equals:true * name3==name4: false * * =========两种方式对象比较======= * name==name3: false * equals:true */ public static void main(String[] args) { System.out.println("=========使用双引号直接创建字符串======="); String addr = "北京"; System.out.println(Integer.toHexString(addr.hashCode())); addr = "上海"; System.out.println(Integer.toHexString(addr.hashCode())); String name = "jack"; System.out.println(Integer.toHexString(name.hashCode())); String name2 = "jack"; System.out.println(Integer.toHexString(name2.hashCode())); System.out.println("equals:" + name.equals(name2)); System.out.println("name==name2: "+(name==name2)); System.out.println(); System.out.println("=========使用构造方法创建字符串======="); String name3 = new String("jack"); System.out.println(Integer.toHexString(name3.hashCode())); String name4 = new String("jack"); System.out.println(Integer.toHexString(name4.hashCode())); System.out.println("equals:" + name3.equals(name4)); System.out.println("name3==name4: "+(name3==name4)); System.out.println(); System.out.println("=========两种方式对象比较======="); System.out.println("name==name3: "+(name==name3)); System.out.println("equals:" + name.equals(name3)); } }
标签:String,常量,练习,System,name,name3,println,out 来源: https://www.cnblogs.com/yixiaobaitest/p/16030380.html