SortedSet contains() method in Java with Examples
The contains() method is used to check whether a specific element is present in the SortedSet or not. So basically it is used to check if a SortedSet contains any particular element.
Syntax:Â Â
boolean contains(Object element)
Parameters: The parameter element is of the type of SortedSet. This is the element that needs to be tested if it is present in the set or not.
Return Value: The method returns true if the element is present in the set else return False.
Note: The contains() method in SortedSet is inherited from the Set interface in Java.
Below program illustrate the Java.util.Set.contains() method:Â
Java
// Java code to illustrate// SortedSet.contains() methodÂ
import java.io.*;import java.util.*;Â
public class SortedSetDemo {Â Â Â Â public static void main(String args[])Â Â Â Â {Â
        // Creating an empty Set        SortedSet<String> set            = new TreeSet<String>();Â
        // Using add() method to        // add elements into the Set        set.add("Welcome");        set.add("To");        set.add("Geeks");        set.add("4");        set.add("Geeks");Â
        // Displaying the Set        System.out.println("Set: " + set);Â
        // Check for "Geeks" in the set        System.out.println(            "Does the Set contains 'Geeks'? "            + set.contains("Geeks"));Â
        // Check for "4" in the set        System.out.println(            "Does the Set contains '4'? "            + set.contains("4"));Â
        // Check if the Set contains "No"        System.out.println(            "Does the Set contains 'No'? "            + set.contains("No"));    }} |
Output:Â
Set: [4, Geeks, To, Welcome] Does the Set contains 'Geeks'? true Does the Set contains '4'? true Does the Set contains 'No'? false
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Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#contains(java.lang.Object)Â
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