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:
// Java code to show the implementation of// addAll method in list interfaceimport java.util.*;public class GfG { // Driver code public static void main(String[] args) { // Initializing a list of type Linkedlist List<Integer> l = new LinkedList<>(); l.add(10); l.add(15); l.add(20); System.out.println(l); // Initializing another list 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.
// Java code to show the implementation of// addAll method in list interfaceimport java.util.*;public class GfG { // Driver code public static void main(String[] args) { // Initializing a list of type Linkedlist List<Integer> l = new LinkedList<>(); l.add(10); l.add(15); l.add(20); System.out.println(l); // Initializing another list 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
