java.util.TreeSet class

java.util.TreeSet class

java.util.TreeSet class

• We can store group of objects in TreeSet object.
• Here group of objects means, it can allow us to store same type of objects only.
• Same type means, assuming that all objects are in the form of integer types.
• If we are trying to insert different type of objects we will get run time exception as ClassCastException  
• TreeSet will display the output in ascending order.
• Its is introduced in 1.2 version.
• Size will increase dynamically.

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Program         :       Example on TreeSet class

Program name  :       TSDemo1.java

Output            :         

      [1, 2, 3, 5, 6, 7]

     

import java.util.TreeSet;

class TSDemo1

{

       public static void main(String args[])

       {

             TreeSet treeSet= new TreeSet();

              

             treeSet.add(7);

             treeSet.add(1);
             treeSet.add(6);

             treeSet.add(2);

             treeSet.add(5);

             treeSet.add(3);

             

             System.out.println(treeSet);

       }

}

Compile       :         javac TSDemo1.java

Run             :         java TSDemo1

Output        :         

     [1, 2, 3, 5, 6, 7]

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Thanks for your time.

Nireekshan