Java LinkedBlockingDeque equals()方法及示例

java.util.LinkedBlockingDeque 类的 equals() 方法是用来比较指定的对象和这个LinkedBlockingDeque是否相等。当且仅当指定的对象也是一个LinkedBlockingDeque，两个LinkedBlockingDeque具有相同的大小，并且两个LinkedBlockingDeques中所有对应的元素对都相等时，返回true。(两个元素e1和e2是相等的，如果（e1==null ? e2==null : e1.eals(e2)）。换句话说，如果两个LinkedBlockingDeques以相同的顺序包含相同的元素，那么它们被定义为是相等的。

语法

public boolean equals(Object o)

参数： 该方法以对象o为参数，与该LinkedBlockingDeque进行平等比较。

返回值： 如果指定的对象与这个LinkedBlockingDeque相等，该方法返回true。

下面的例子说明了LinkedBlockingDeque.equals()方法。

程序1 :

// Java Program Demonstrate equals()
// method of LinkedBlockingDeque
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<Integer> LBD1
            = new LinkedBlockingDeque<Integer>();
  
        // Add numbers to end of LinkedBlockingDeque
        LBD1.add(7855642);
        LBD1.add(35658786);
        LBD1.add(5278367);
        LBD1.add(74381793);
  
        System.out.println("Linked Blocking Deque 1: " + LBD1);
  
        // create another object of LinkedBlockingDeque
        LinkedBlockingDeque<String> LBD2
            = new LinkedBlockingDeque<String>();
  
        // Add numbers to end of LinkedBlockingDeque
        LBD2.add("1");
        LBD2.add("2");
        LBD2.add("3");
        LBD2.add("4");
  
        System.out.println("Linked Blocking Deque 2: " + LBD2);
  
        // using equals() function
        System.out.println("Are both Linked Blocking Deque equal: "
                           + LBD1.equals(LBD2));
    }
}

输出:

Linked Blocking Deque 1: [7855642, 35658786, 5278367, 74381793]
Linked Blocking Deque 2: [1, 2, 3, 4]
Are both Linked Blocking Deque equal: false

示例2

// Java Program Demonstrate equals()
// method of LinkedBlockingDeque
// when the list contains characters
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<String> LBD1
            = new LinkedBlockingDeque<String>();
  
        // Add numbers to end of LinkedBlockingDeque
        LBD1.add("1");
        LBD1.add("2");
        LBD1.add("3");
        LBD1.add("4");
  
        System.out.println("Linked Blocking Deque 1: " + LBD1);
  
        // using equals() function
        System.out.println("Is LBD1 equal to LBD1: "
                           + LBD1.equals(LBD1));
    }
}

输出:

Linked Blocking Deque 1: [1, 2, 3, 4]
Is LBD1 equal to LBD1: true