java.lang.Character.Subset.equals()方法範例


java.lang.Character.Subset.equals() 方法比較兩個子集相等對的物件。

宣告

以下是java.lang.Character.Subset.equals()方法的宣告

public final boolean equals(Object obj)

引數

  • obj -- 這是要與之比較的參照物件。

返回值

如果這個物件與obj引數是一樣的此方法返回true,否則返回false。

異常

  • NA

例子

下面的例子顯示java.lang.Character.Subset.equals()方法的使用。

package com.yiibai;

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);
   }
} 

讓我們來編譯和執行上面的程式,這將產生以下結果:

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