Check if a particular value exists in Java TreeSet example


/*
  Check if a particular value exists in Java TreeSet example
  This Java Example shows how to check if TreeSet object contains a particular
  value using contains method of TreeSet class.
*/

import java.util.TreeSet;

public class CheckValueOfTreeSetExample {

 
public static void main(String[] args) {
   
   
//create TreeSet object
   
TreeSet tSet = new TreeSet();
   
   
//add elements to TreeSet
   
tSet.add("1");
    tSet.add
("3");
    tSet.add
("2");
    tSet.add
("5");
    tSet.add
("4");
   
   
/*
      To check whether a particular value exists in TreeSet use
      boolean contains(Object value) method of TreeSet class.
      It returns true if the TreeSet contains the value, otherwise false.
    */
   
   
boolean blnExists = tSet.contains("3");
    System.out.println
("3 exists in TreeSet ? : " + blnExists);
 
}
}

/*
Output would be
3 exists in TreeSet ? : true
*/