Java Tree Set Pro

Check if a particular value exists in Java Tree Set

import java.util.TreeSet;

public class CheckValueOfTreeSetExample

 {

public static void main(String[] args)

{

TreeSet tSet = new TreeSet();

tSet.add("1");

tSet.add("3");

tSet.add("2");

tSet.add("5");

tSet.add("4");

boolean blnExists = tSet.contains("3");

System.out.println("3 exists in TreeSet ? : " + blnExists);

   }

}

Copy all elements of Java Tree Set to an Object Array

import java.util.TreeSet; 

public class CopyElementsOfTreeSetToArrayExample

{

public static void main(String[] args)

{

TreeSet tSet = new TreeSet();

tSet.add(new Integer("1"));

tSet.add(new Integer("2"));

tSet.add(new Integer("3"));

Object[] objArray = tSet.toArray();

System.out.println("TreeSet elements are copied into an Array.

Now Array Contains..");

for(int index=0; index < objArray.length ; index++)

System.out.println(objArray[index]);

   }

}

Get Head Set from Java Tree Set

import java.util.SortedSet;

import java.util.TreeSet;

public class GetHeadSetFromTreeSetExample

{

public static void main(String[] args)

{

TreeSet tSet = new TreeSet();

tSet.add("1");

tSet.add("3");

tSet.add("2");

tSet.add("5");

tSet.add("4");

SortedSet sortedSet = tSet.headSet("3");

System.out.println("Head Set Contains : " + sortedSet);

   }

}

Get Size of Java Tree Set

import java.util.TreeSet;

public class GetSizeOfJavaTreeSetExample

{

public static void main(String[] args)

{

TreeSet tSet = new TreeSet();

System.out.println("Size of TreeSet : " + tSet.size());

tSet.add(new Integer("1"));

tSet.add(new Integer("2"));

tSet.add(new Integer("3"));

System.out.println("Size of TreeSet after addition : " + tSet.size());

tSet.remove(new Integer("1"));

System.out.println("Size of TreeSet after removal : " + tSet.size());

   }

}

Get Sub Set from Java Tree Set

import java.util.TreeSet;

import java.util.SortedSet;  

public class GetSubSetFromTreeSetExample

{

public static void main(String[] args)

{

TreeSet tSet = new TreeSet();

tSet.add("1");

tSet.add("3");

tSet.add("2");

tSet.add("5");

tSet.add("4");

SortedSet sortedSet = tSet.subSet("2","5");

System.out.println("SortedSet Contains : " + sortedSet);

   }

}