Swing component and demo project example and jdbc pack are added.

.classpath

@@ -4,5 +4,7 @@
 	<classpathentry kind="src" path="resource"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="lib" path="C:/Users/ojhay/Documents/GitHub/JavaStud/resource/lib/joda-time-2.8.2.jar"/>
+	<classpathentry kind="lib" path="C:/Users/ojhay/Documents/GitHub/JavaStud/resource/lib/mysql-connector-java-5.1.6.jar"/>
+	<classpathentry kind="lib" path="C:/Users/ojhay/Documents/GitHub/JavaStud/forms-1.3.0.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

src/collection/LinkedHashSetExample.java

@@ -6,9 +6,14 @@
 
 public class LinkedHashSetExample {
 	public static void main( String[] args ) {
+
 		Set< Integer > linkedHashset = new LinkedHashSet< Integer >( );
 		linkedHashset.addAll( Arrays.asList( 20, 10, 50, 75, 90 ) );
 		System.out.println( linkedHashset );
 
+		Set< String > sHashset = new LinkedHashSet< String >( );
+		sHashset.addAll( Arrays.asList( "HELLO", "WORLD", "JAVA" ) );
+		System.out.println( sHashset );
+
 	}
 }

src/collection/User.java

@@ -4,7 +4,7 @@
 
 public class User implements Serializable {
 
-	private static final long	serialVersionUID	= 6392483654526540237L;
+	private static final long	serialVersionUID	= 7031679283226403692L;
 
 	private int					id;
 

src/collection/UserArrayList.java

@@ -6,17 +6,21 @@
 public class UserArrayList {
 	public static void main( String[] args ) {
 
-		List< User > userList = new ArrayList< User >( );
+		List< User > userList = new ArrayList< User >( ); // or LinkedList
 
 		userList.add( new User( 1, "User1" ) );
 		userList.add( new User( 2, "User2" ) );
 		userList.add( new User( 3, "User3" ) );
 		userList.add( new User( 4, "User4" ) );
+		userList.add( new User( 5, "User5" ) );
 
-		userList.remove( 1 );
+		System.out.println( "User at index 2: " + userList.get( 2 ) + "\n" );
+
+		userList.add( 2, new User( 10, "New USER" ) );
 
 		for ( User user: userList ) {
 			System.out.println( user );
 		}
+
 	}
 }

src/jdbc/JdbcConnectionTest.java

@@ -0,0 +1,34 @@
+package jdbc;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+public class JdbcConnectionTest {
+	public static void main( String[] args ) {
+
+		try {
+			Class.forName( "com.mysql.jdbc.Driver" );
+
+			Connection con = DriverManager.getConnection( "jdbc:mysql://localhost:3306/testdb", "root", "" );
+			// here studentdb is database name, root is username and password
+
+			Statement stmt = con.createStatement( );
+
+			ResultSet rs = stmt.executeQuery( "select * from student" );
+
+			while ( rs.next( ) ) {// Loop Each Row
+				// Fetch columns
+				System.out.println( rs.getInt( 1 ) + "  " + rs.getString( 2 ) );
+			}
+
+			con.close( );
+
+		} catch ( Exception e ) {
+			System.out.println( e );
+		}
+
+	}
+
+}

src/jdbc/MysqlConnection.java

@@ -0,0 +1,15 @@
+package jdbc;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class MysqlConnection {
+
+	public static Connection getConnection( ) throws ClassNotFoundException, SQLException {
+		Class.forName( "com.mysql.jdbc.Driver" );
+		Connection con = DriverManager.getConnection( "jdbc:mysql://localhost:3306/testdb", "root", "" );
+		return con;
+	}
+
+}

src/swing/LoginScreenLayout.java

@@ -0,0 +1,244 @@
+package swing;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.EventQueue;
+import java.awt.FlowLayout;
+import java.awt.Font;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+import javax.swing.UIManager;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.EtchedBorder;
+import javax.swing.border.TitledBorder;
+
+import com.jgoodies.forms.factories.FormFactory;
+import com.jgoodies.forms.layout.ColumnSpec;
+import com.jgoodies.forms.layout.FormLayout;
+import com.jgoodies.forms.layout.RowSpec;
+import java.awt.GridLayout;
+import javax.swing.JPasswordField;
+
+public class LoginScreenLayout extends JFrame {
+
+	private JPanel		contentPane;
+	private JPanel		panelTop;
+	private JPanel		panelBottom;
+	private JPanel		panelLeft;
+	private JPanel		panelRight;
+	private JPanel		panelCenter;
+	private JLabel		lblUserName;
+	private JTextField	username;
+	private JLabel		lblPassword;
+	private JPasswordField	password;
+	private JButton		btnSignIn;
+	private JButton		btnCancel;
+	private JPanel		loginPanel;
+	private JLabel status;
+
+	/**
+	 * Launch the application.
+	 */
+	public static void main( String[] args ) {
+		EventQueue.invokeLater( new Runnable( ) {
+			public void run( ) {
+				try {
+					LoginScreenLayout frame = new LoginScreenLayout( );
+					frame.setVisible( true );
+				} catch ( Exception e ) {
+					e.printStackTrace( );
+				}
+			}
+		} );
+	}
+
+	/**
+	 * Create the frame.
+	 */
+	public LoginScreenLayout( ) {
+		setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
+		setBounds( 100, 100, 499, 261 );
+		contentPane = new JPanel( );
+		contentPane.setBorder( new EmptyBorder( 5, 5, 5, 5 ) );
+		setContentPane( contentPane );
+		contentPane.setLayout( new BorderLayout( -2, -2 ) );
+		contentPane.add( getPanel_1( ), BorderLayout.NORTH );
+		contentPane.add( getPanel_1_1( ), BorderLayout.SOUTH );
+		contentPane.add( getPanelLeft( ), BorderLayout.WEST );
+		contentPane.add( getPanelRight( ), BorderLayout.EAST );
+		contentPane.add( getPanelCenter( ), BorderLayout.CENTER );
+	}
+
+	private JPanel getPanel_1( ) {
+		if ( panelTop == null ) {
+			panelTop = new JPanel( );
+			FlowLayout flowLayout = ( FlowLayout ) panelTop.getLayout( );
+			flowLayout.setVgap( 10 );
+			flowLayout.setHgap( 10 );
+			panelTop.setBackground( UIManager.getColor( "activeCaption" ) );
+			panelTop.setForeground( Color.BLACK );
+			panelTop.setBorder( null );
+		}
+		return panelTop;
+	}
+
+	private JPanel getPanel_1_1( ) {
+		if ( panelBottom == null ) {
+			panelBottom = new JPanel( );
+			FlowLayout flowLayout = ( FlowLayout ) panelBottom.getLayout( );
+			flowLayout.setVgap( 10 );
+			flowLayout.setHgap( 10 );
+			panelBottom.setBackground( UIManager.getColor( "activeCaption" ) );
+			panelBottom.setForeground( Color.BLACK );
+		}
+		return panelBottom;
+	}
+
+	private JPanel getPanelLeft( ) {
+		if ( panelLeft == null ) {
+			panelLeft = new JPanel( );
+			FlowLayout flowLayout = ( FlowLayout ) panelLeft.getLayout( );
+			flowLayout.setVgap( 10 );
+			flowLayout.setHgap( 10 );
+			panelLeft.setBackground( UIManager.getColor( "activeCaption" ) );
+			panelLeft.setForeground( Color.BLACK );
+		}
+		return panelLeft;
+	}
+
+	private JPanel getPanelRight( ) {
+		if ( panelRight == null ) {
+			panelRight = new JPanel( );
+			FlowLayout flowLayout = ( FlowLayout ) panelRight.getLayout( );
+			flowLayout.setVgap( 10 );
+			flowLayout.setHgap( 10 );
+			panelRight.setBackground( UIManager.getColor( "activeCaption" ) );
+			panelRight.setForeground( Color.BLACK );
+		}
+		return panelRight;
+	}
+
+	private JPanel getPanelCenter( ) {
+		if ( panelCenter == null ) {
+			panelCenter = new JPanel( );
+			panelCenter.setBackground( new Color( 204, 255, 204 ) );
+			panelCenter.setBorder( new EtchedBorder( EtchedBorder.LOWERED, null, null ) );
+			panelCenter.setForeground( Color.BLACK );
+			panelCenter.setLayout( new FormLayout(new ColumnSpec[] {
+					FormFactory.RELATED_GAP_COLSPEC,
+					ColumnSpec.decode("default:grow"),
+					ColumnSpec.decode("6dlu"),
+					FormFactory.DEFAULT_COLSPEC,
+					FormFactory.RELATED_GAP_COLSPEC,
+					FormFactory.DEFAULT_COLSPEC,
+					FormFactory.RELATED_GAP_COLSPEC,
+					FormFactory.DEFAULT_COLSPEC,
+					FormFactory.RELATED_GAP_COLSPEC,
+					ColumnSpec.decode("default:grow"),},
+				new RowSpec[] {
+					FormFactory.RELATED_GAP_ROWSPEC,
+					RowSpec.decode("default:grow"),
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,
+					FormFactory.RELATED_GAP_ROWSPEC,
+					FormFactory.DEFAULT_ROWSPEC,}) );
+			panelCenter.add( getLoginPanel( ), "2, 2, 9, 8, fill, fill" );
+			panelCenter.add(getStatus(), "8, 10, 3, 1");
+			panelCenter.add( getBtnSignIn( ), "4, 14" );
+			panelCenter.add( getBtnCancel( ), "10, 14" );
+		}
+		return panelCenter;
+	}
+
+	private JLabel getLblUserName( ) {
+		if ( lblUserName == null ) {
+			lblUserName = new JLabel( "User Name:" );
+			lblUserName.setFont( new Font( "Tahoma", Font.BOLD, 13 ) );
+		}
+		return lblUserName;
+	}
+
+	private JTextField getUsername( ) {
+		if ( username == null ) {
+			username = new JTextField( );
+			username.setSize( 250, 30 );
+			username.setColumns( 10 );
+		}
+		return username;
+	}
+
+	private JLabel getLblPassword( ) {
+		if ( lblPassword == null ) {
+			lblPassword = new JLabel( "Password:" );
+			lblPassword.setFont( new Font( "Tahoma", Font.BOLD, 13 ) );
+		}
+		return lblPassword;
+	}
+
+	private JPasswordField getPassword( ) {
+		if ( password == null ) {
+			password = new JPasswordField( );
+			password.setColumns( 10 );
+		}
+		return password;
+	}
+
+	private JButton getBtnSignIn( ) {
+		if ( btnSignIn == null ) {
+			btnSignIn = new JButton( "Sign In" );
+			btnSignIn.setFont( new Font( "Tahoma", Font.BOLD, 11 ) );
+		}
+		return btnSignIn;
+	}
+
+	private JButton getBtnCancel( ) {
+		if ( btnCancel == null ) {
+			btnCancel = new JButton( "Cancel" );
+			btnCancel.addActionListener( new ActionListener( ) {
+				@Override
+				public void actionPerformed( ActionEvent e ) {
+					System.exit( 0 );
+				}
+			} );
+		}
+		return btnCancel;
+	}
+
+	private JPanel getLoginPanel( ) {
+		if ( loginPanel == null ) {
+			loginPanel = new JPanel( );
+			loginPanel.setBorder( new TitledBorder( UIManager.getBorder( "TitledBorder.border" ), "Login", TitledBorder.LEADING, TitledBorder.TOP, null, new Color( 0, 0, 0 ) ) );
+			loginPanel.setLayout(new GridLayout(2, 3, 2, 2));
+			loginPanel.add( getLblUserName( ) );
+			loginPanel.add( getUsername( ) );
+			loginPanel.add( getLblPassword( ) );
+			loginPanel.add( getPassword( ) );
+		}
+		return loginPanel;
+	}
+
+	private JLabel getStatus() {
+		if (status == null) {
+			status = new JLabel("Status:");
+			status.setForeground(new Color(204, 0, 102));
+			status.setFont(new Font("Tahoma", Font.BOLD, 11));
+		}
+		return status;
+	}
+}