SortedSet equals() method in Java with Examples
Last Updated :
21 Jan, 2021
The equals() method of java.util.SortedSet class is used to verify the equality of an Object with a SortedSet and compare them. The method returns true if the size of both the SortedSets are equal and both contain the same elements.
Syntax:
public boolean equals(Object o)
Parameters: This method takes the object o as a parameter to be compared for equality with this set.
Returns Value: This method returns true if the specified object is equal to this set.
Note: The equals() method in SortedSet is inherited from the Set interface in Java.
Below are the examples to illustrate the equals() method.
Example 1:
Java
import java.util.*;
public class GFG {
public static void main(String[] argv)
{
SortedSet<String> arrset1
= new TreeSet<String>();
arrset1.add("A");
arrset1.add("B");
arrset1.add("C");
arrset1.add("D");
arrset1.add("E");
System.out.println("First Set: "
+ arrset1);
SortedSet<String> arrset2
= new TreeSet<String>();
arrset2.add("A");
arrset2.add("B");
arrset2.add("C");
arrset2.add("D");
arrset2.add("E");
System.out.println("Second Set: "
+ arrset2);
boolean value
= arrset1.equals(arrset2);
System.out.println("Are both set equal? "
+ value);
}
}
|
Output:
First Set: [A, B, C, D, E]
Second Set: [A, B, C, D, E]
Are both set equal? true
Example 2:
Java
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
SortedSet<Integer> arrset1
= new TreeSet<Integer>();
arrset1.add(10);
arrset1.add(20);
arrset1.add(30);
arrset1.add(40);
arrset1.add(50);
System.out.println("First Set: "
+ arrset1);
SortedSet<Integer> arrset2
= new TreeSet<Integer>();
arrset2.add(10);
arrset2.add(20);
arrset2.add(30);
System.out.println("Second Set: "
+ arrset2);
boolean value
= arrset1.equals(arrset2);
System.out.println("Are both set equal? "
+ value);
}
}
|
Output:
First Set: [10, 20, 30, 40, 50]
Second Set: [10, 20, 30]
Are both set equal? false
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#equals(java.lang.Object)
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