NavigableSet in Java

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Program 1

import java.util.*;
class TestNavigable 
{
      public static void main(String args[])
      {

           TreeSet<Double>t=new TreeSet<Double>();
             t.add(11.30);
             t.add(11.45);
             t.add(12.55);
             t.add(12.60);
           //  System.out.println(t);
            System.out.println(t.tailSet(11.30));






        //    TreeSet<Integer>t=new TreeSet<Integer>();
        //      t.add(100);
        //       t.add(200);
        //      t.add(300);
        //      t.add(400);
        //      t.add(500);
        //      t.add(600);
        //      t.add(700);
        //      t.add(800);
        //      t.add(900);

            // System.out.println(t.lower(500));    //  lower(e)  >
           //  System.out.println(t.floor(500));     //floor(e) 
            // System.out.println(t.higher(500));  
           // System.out.println(t.ceiling(500));       
                //  System.out.println(t);
                 //System.out.println(t.pollFirst());
                //  System.out.println(t.pollLast());
                //  System.out.println(t);
           //      System.out.println(t.descendingSet());
            //  System.out.println(t);
            //  System.out.println(t.first());
            //  System.out.println(t.last());
            //  System.out.println(t.headSet(500));
            //  System.out.println(t.tailSet(500));
            // //  System.out.println(t.subSet(200,600));

      }
}

 

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