Java中AbstractSequentialList equals()方法的示例

java.util.AbstractSequentialList 类的 equals() 方法用于检查此AbstractSequentialList对象是否等于传递的参数对象。此方法返回一个布尔值，表明它们是否相等。

语法：

public boolean equals(Object o)

参数： 此方法将对象o作为参数进行比较，判断它和该列表是否相等。

返回值: 此方法返回true，如果指定的对象和此列表相等。

以下是说明 equals() 方法的示例。

例1：

// Java program to demonstrate equals()
// method of AbstractSequentialList
  
import java.util.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // Creating object of AbstractSequentialList<String>
        AbstractSequentialList<String>
            arrlist1 = new LinkedList<String>();
  
        // Populating arrlist1
        arrlist1.add("A");
        arrlist1.add("B");
        arrlist1.add("C");
        arrlist1.add("D");
        arrlist1.add("E");
  
        // print arrlist1
        System.out.println("First AbstractSequentialListlist: "
                           + arrlist1);
  
        // Creating another object of AbstractSequentialList<String>
        AbstractSequentialList<String>
            arrlist2 = new LinkedList<String>();
  
        // Populating arrlist2
        arrlist2.add("A");
        arrlist2.add("B");
        arrlist2.add("C");
        arrlist2.add("D");
        arrlist2.add("E");
  
        // print arrlist2
        System.out.println("Second AbstractSequentialList: "
                           + arrlist2);
  
        // comparing first AbstractSequentialList to another
        // using equals() method
        boolean value
            = arrlist1.equals(arrlist2);
  
        // print the value
        System.out.println("Are both list equal: "
                           + value);
    }
}

First AbstractSequentialListlist: [A, B, C, D, E]
Second AbstractSequentialList: [A, B, C, D, E]
Are both list equal: true

例2：

// Java program to demonstrate equals()
// method of AbstractSequentialList
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
    {
  
        // Creating object of AbstractSequentialList
        AbstractSequentialList<Integer>
            arrlist1 = new LinkedList<Integer>();
  
        // Populating arrlist1
        arrlist1.add(10);
        arrlist1.add(20);
        arrlist1.add(30);
        arrlist1.add(40);
        arrlist1.add(50);
  
        // print arrlist1
        System.out.println("First AbstractSequentialListlist: "
                           + arrlist1);
  
        // Creating another object of AbstractSequentialList
        AbstractSequentialList<Integer>
            arrlist2 = new LinkedList<Integer>();
  
        // Populating arrlist2
        arrlist2.add(10);
        arrlist2.add(20);
        arrlist2.add(30);
  
        // print arrlist2
        System.out.println("Second AbstractSequentialList: "
                           + arrlist2);
  
        // comparing first AbstractSequentialList to another
        // using equals() method
        boolean value = arrlist1.equals(arrlist2);
  
// print the value
        System.out.println("Are both list equal: "
                           + value);
    }
}

第一个AbstractSequentialList列表：[10，20，30，40，50]
第二个AbstractSequentialList列表：[10，20，30]
两个列表是否相等：false