JAVA EE: 2014

Wednesday, 31 December 2014

Java : Collection Framework : TreeSet (RetainAll)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=xvtzO_UjhrA&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.LinkedList;
import java.util.TreeSet;

/*
 * Example of retainAll(Collection<?> c) method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);
        treeSet.add(100);
        treeSet.add(200);

        System.out.println("treeSet : " + treeSet + "\n");

        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        
        linkedList.add(100);
        linkedList.add(200);

        System.out.println("linkedList : " + linkedList + "\n");

        /*
         * Retains only the elements in this set that are contained in the
         * specified collection (optional operation). In other words, removes
         * from this set all of its elements that are not contained in the
         * specified collection.
         * 
         * If the specified collection is also a set, this operation effectively
         * modifies this set so that its value is the intersection of the two
         * sets.
         */

        boolean isRetained = treeSet.retainAll(linkedList);

        System.out.println("isRetained : " + isRetained);
        System.out.println("treeSet : " + treeSet + "\n");
    }
}

Output

treeSet : [20, 30, 40, 100, 200]

linkedList : [100, 200]

isRetained : true
treeSet : [100, 200]

To Download TreeSetDemoRetainAll Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoRetainAll.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (RemoveAll)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=tPVYo0G_1jU&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.LinkedList;
import java.util.TreeSet;

/*
 * Example of removeAll(Collection<? extends E> c) method.
 */
public class TreeSetExample
{
    public static void main(String[] args)
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);
        treeSet.add(100);
        treeSet.add(200);

        System.out.println("treeSet : " + treeSet + "\n");

        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        
        linkedList.add(100);
        linkedList.add(200);

        System.out.println("linkedList : " + linkedList + "\n");

        /*
         * Removes from this set all of its elements that are contained in the
         * specified collection
         */

        boolean isRemoved = treeSet.removeAll(linkedList);

        System.out.println("isRemoved : " + isRemoved);
        System.out.println("treeSet : " + treeSet + "\n");
    }
}

Output

treeSet : [20, 30, 40, 100, 200]

linkedList : [100, 200]

isRemoved : true
treeSet : [20, 30, 40]

To Download TreeSetDemoRemoveAll Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoRemoveAll.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (ContainsAll)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=Fznm_p7Zwl0&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.LinkedList;
import java.util.TreeSet;

/*
 * Example of containsAll(Collection<?> c) method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);
        treeSet.add(1000);
        treeSet.add(2000);

        System.out.println("treeSet : " + treeSet + "\n");

        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        
        linkedList.add(1000);
        linkedList.add(2000);

        System.out.println("linkedList : " + linkedList + "\n");

        /*
         * Returns true if this set contains all of the elements of the
         * specified collection.
         * 
         * If the specified collection is also a set, this method returns true
         * if it is a subset of this set.
         */

        boolean isExist = treeSet.containsAll(linkedList);

        System.out.println("isExist : " + isExist);
    }
}

Output

treeSet : [20, 30, 40, 1000, 2000]

linkedList : [1000, 2000]

isExist : true

To Download TreeSetDemoContainsAll Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoContainsAll.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Tuesday, 30 December 2014

Java : Collection Framework : TreeSet (Remove)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=y5aasHcotEc&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of remove(Object o) method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");
        /*
         * Removes the specified element from this set if it is present.
         */

        boolean isRemoved = treeSet.remove(50);
        System.out.println("isRemoved : " + isRemoved);

        System.out.println("treeSet : " + treeSet + "\n");
    }
}

Output

treeSet : [10, 20, 30, 40, 50]

isRemoved : true
treeSet : [10, 20, 30, 40]

To Download TreeSetDemoRemove Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoRemove.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (Constructor Accepts Collection)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=46Us9a1EGe8&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.LinkedList;
import java.util.TreeSet;

/*
 * Example of TreeSet(Collection<? extends E> c) constructor.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {
        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        linkedList.add(50);
        linkedList.add(30);
        linkedList.add(40);
        linkedList.add(10);
        linkedList.add(20);

        System.out.println("linkedList : " + linkedList + "\n");
        
        /*
         * Constructs a new tree set containing the elements in the specified
         * collection, sorted according to the natural ordering of its elements.
         * 
         * All elements inserted into the set must implement the Comparable
         * interface.
         */
        TreeSet<Integer> treeSet = new TreeSet<Integer>(linkedList);

        System.out.println("treeSet : " + treeSet + "\n");

    }
}

Output

linkedList : [50, 30, 40, 10, 20]

treeSet : [10, 20, 30, 40, 50]

To Download TreeSetDemoConstAcceptsCollection Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoConstAcceptsCollection.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (Clone)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=SZhQOXiKmbk&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of clone() method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");
        /*
         * Returns a shallow copy of this TreeSet instance. (The elements
         * themselves are not cloned.)
         */
        TreeSet<String> clonedTreeSet = (TreeSet<String>) treeSet.clone();

        System.out.println("clonedTreeSet : " + clonedTreeSet);

    }
}

Output

treeSet : [10, 20, 30, 40, 50]

clonedTreeSet : [10, 20, 30, 40, 50]

To Download TreeSetDemoClone Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoClone.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Monday, 29 December 2014

Java : Collection Framework : TreeSet (Add Group of Objects)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=HxXJKCZ3xDM&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.LinkedList;
import java.util.TreeSet;

/*
 * Example of addAll(Collection<? extends E> c) method.
 */
public class TreeSetExample
{

    public static void main(String[] args)
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        linkedList.add(100);
        linkedList.add(200);

        System.out.println("linkedList : " + linkedList + "\n");

        /*
         * Adds all of the elements in the linkedList to the treeSet.
         */

        boolean isAdded = treeSet.addAll(linkedList);

        System.out.println("isAdded : " + isAdded);
        System.out.println("treeSet : " + treeSet + "\n");
    }
}

Output

treeSet : [20, 30, 40]

linkedList : [100, 200]

isAdded : true
treeSet : [20, 30, 40, 100, 200]

To Download TreeSetDemoAddAll Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoAddAll.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection : TreeSet - Playlist

Click here to watch in Youtube :
https://www.youtube.com/watch?v=VdIhRwu70Pk&list=PLmCsXDGbJHdheOciBhnr_3pZXzQEB3vbm

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : Set (Set Interface)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=Vv2XxY3b1k4&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge

Java : Collection Framework : Set (Set Interface)

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : LinkedHashSet (LinkedHashSet Introduction)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=i0J-D3wOMQk&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge

Java : Collection Framework : LinkedHashSet (LinkedHasSet Introduction)

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (Iterator remove)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=sOf52LkU-LA&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.Iterator;
import java.util.TreeSet;

/*
 * Example of Iterator remove() method.
 */
public class TreeSetExample
{
    public static void main(String[] args)
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        /*
         * Returns an iterator over the elements in this set in ascending order.
         */

        Iterator<Integer> iterator = treeSet.iterator();

        while (iterator.hasNext())
        {
            iterator.next();
            /*
             * Removes from the treeSet the last element that was returned by
             * next()
             */
            iterator.remove();
        }

        System.out.println("treeSet : " + treeSet + "\n");
    }
}

Output

treeSet : [10, 20, 30, 40, 50]

treeSet : []

To Download TreeSetDemoIteratorRemove Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoIteratorRemove.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (Iterator)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=QMtSL7OXxqw&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.Iterator;
import java.util.TreeSet;

/*
 * Example of iterator() method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        /*
         * Returns an iterator over the elements in this set in ascending order.
         */

        Iterator<Integer> iterator = treeSet.iterator();

        /*
         * Using Iterator to get each element from the TreeSet.
         */

        while( iterator.hasNext() )
        {
            Integer value = iterator.next();
            System.out.println(value);
        }
    }
}

Output

treeSet : [10, 20, 30, 40, 50]

10
20
30
40
50

To Download TreeSetDemoIterator Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoIterator.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (for-each loop)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=-v_a7jbiFyk&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of for-each loop.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");
        /*
         * Using foreach loop get each element from the treeSet.
         */

        for( Integer value : treeSet )
        {
            System.out.println(value);
        }
    }
}

Output

treeSet : [10, 20, 30, 40, 50]

10
20
30
40
50

To Download TreeSetDemoForeach Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoForeach.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (isEmpty)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=Ms7sEojiisI&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of isEmpty() method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();
        
        System.out.println("treeSet : " + treeSet + "\n");
        
        /*
         * Returns true if this set contains no elements.
         */
        boolean isEmpty = treeSet.isEmpty();
        System.out.println("isEmpty :  " + isEmpty + "\n");


        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        /*
         * Returns true if this set contains no elements.
         */
        isEmpty = treeSet.isEmpty();
        System.out.println("isEmpty :  " + isEmpty);
    }
}

Output

treeSet : []

isEmpty :  true

treeSet : [10, 20, 30, 40, 50]

isEmpty :  false

To Download TreeSetDemoIsEmpty Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoIsEmpty.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java : Collection Framework : TreeSet (Size)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=vtzaM_h-NWk&list=UUhwKlOVR041tngjerWxVccw

TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of size() method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        /*
         * Returns the number of elements in this set (its cardinality).
         */
        int size = treeSet.size();

        System.out.println("size : " + size);

    }
}

Output

treeSet : [10, 20, 30, 40, 50]

size : 5

To Download TreeSetDemoSize Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoSize.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial