List equals() Method in Java with Examples
Last Updated :
02 Jan, 2019
This method is used to compare two lists. It compares the lists as, both lists should have the same size, and all corresponding pairs of elements in the two lists are equal.
Syntax:
boolean equals(Object o)
Parameters: This function has a single parameter which is object to be compared for equality.
Returns: This method returns True if lists are equal.
Below programs show the implementation of this method.
Program 1:
import java.util.*;
public class GfG {
public static void main(String[] args)
{
List<Integer> l = new LinkedList<>();
l.add(10);
l.add(15);
l.add(20);
System.out.println(l);
List<Integer> l2 = new ArrayList<Integer>();
l2.add(100);
l2.add(200);
l2.add(300);
System.out.println(l2);
if (l.equals(l2))
System.out.println("Equal");
else
System.out.println("Not equal");
}
}
|
Output:
[10, 15, 20]
[100, 200, 300]
Not equal
Program 2: Below is the code to show implementation of list.addAll() using Linkedlist.
import java.util.*;
public class GfG {
public static void main(String[] args)
{
List<Integer> l = new LinkedList<>();
l.add(10);
l.add(15);
l.add(20);
System.out.println(l);
List<Integer> l2 = new ArrayList<Integer>();
l2.add(10);
l2.add(15);
l2.add(20);
System.out.println(l2);
if (l.equals(l2))
System.out.println("Equal");
else
System.out.println("Not equal");
}
}
|
Output:
[10, 15, 20]
[10, 15, 20]
Equal
Reference:
Oracle Docs
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