Java Character.SubSet equals()方法

java.lang.Character.SubSet.equals() 方法比较两个子集相等对的对象。

1 语法

public final boolean equals(Object obj)

2 参数

obj：这是要与之比较的引用对象。

3 返回值

如果这个对象与obj参数是一样的此方法返回true，否则返回false。

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * Java Character.SubSet equals()方法
 */
import java.lang.*;

public class CharacterSubsetDemo extends Character.Subset {
  
   // constructor of super class
   CharacterSubsetDemo(String s){
      super(s); 
   }

   public static void main(String[] args) {

      CharacterSubsetDemo obj1 = new CharacterSubsetDemo("admin");
      CharacterSubsetDemo obj2 = new CharacterSubsetDemo("webmaster");
      CharacterSubsetDemo obj3 = new CharacterSubsetDemo("administrator");

      // compares Subset objects for equality
      boolean retval = obj1.equals(obj1);
      System.out.println("Object obj1 is equal to obj1 ? " + retval);
      retval = obj2.equals(obj1);
      System.out.println("Object obj1 is equal to obj2 ? " + retval);
      retval = obj3.equals(obj1);
      System.out.println("Object obj1 is equal to obj3 ? " + retval);
   }
}

输出结果为：

Object obj1 is equal to obj1 ? true
Object obj1 is equal to obj2 ? false
Object obj1 is equal to obj3 ? false