Package : Javax.swing

Class: javax.swing.JList

Note : JList class can be used to add a list of items with several visible rows to a container.

Constructors	Description
JList()	This Constructor creates an empty List instance with the default 8 rows visible.
JList (Object[] ListData)	This Constructor creates a List instance with the specified data.

Method	Description
void addListSelectionListener(ListSelectionListener Handler)	This Method specifies an event handler for the list.
int getSelectedIndex ()	This Method Returns the index of the selected item.
void setBackground (Color BackgroundColor)	This Method sets the background color of the list.
void setFont (Font TextFont)	This Method sets the font for this component.
void setForeground (Color TextColor)	This Method sets the color of the text for the list.
void setMinimum (int min)	This Method sets the minimum value of the slider.
void setListData (Object[] ListData)	This Method adds the specified data to the list .
void SetSelectedIndex (int Selection)	This Method sets the index of the selected item. .

Example :

package client;

import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;

public class Frame1  extends JFrame
{
	String  listData[] = {"Item 1","Item 2","Item 3","Item 4"};
	private JList jList1 = new JList(listData);
	private JLabel jLabel1 = new JLabel();
	public Frame1()
	{
	   	try
	   	{
	       	jbInit();
		}
		catch (Exception e)
		{
	       	e.printStackTrace();
		}
	}
	private void jbInit() throws Exception
	{
	    this.getContentPane().setLayout( null );
	    this.setSize(new Dimension(400, 264));
	    jList1.setBounds(new Rectangle(205, 65, 100, 70));
	    jLabel1.setText("jList");
	    jLabel1.setBounds(new Rectangle(190, 30, 65, 25));
	    this.getContentPane().add(jLabel1, null);
	    this.getContentPane().add(jList1, null);
	}
    public static void main(String agrs[])
    {
    	Frame1 frame=new Frame1();
    	frame.setVisible(true);
    }
}
				

Output :

Package : Javax.swing

Class: javax.swing.JTable

Note :JTable class use to create tables for a GUI based application.

Constructors	Description
public JTable()	This Constructor creates an instance of the JTable class that is initialized with a default data model,column model, and selection model.
public JTable(TableModel model)	This Constructor creates an instance of the JTable class that is initialized with a default column model and selection model, and with the specified data model.

Method	Description
getRowCount()	Invoked by the table object and returns the number of rows present in that table.
getColumnCount()	Returns the number of columns present in table.
getColumnName(int i)	Takes the index number of column number as its argument and return the name.
getTableHeight()	Return the length of table in pixel.
getSelectedColumn()	Returns the index number of column which is selected on GUI.
getSelectedColumn	Return an Array of Integers and contains the index number of all selected columns.
getSelectedRows()	Returns an Array of integer and contains the index number of all selected rows.
setValueAt(Object data,int row_index,int column_index	Used to put the data in specified position of the table.

Example:

package project1;

import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTable;

public class Frame1 extends JFrame
{
	Object rowData[][] = { { "1x1", "1x2", "1x3" }, { "2x1", "2x2", "2x3" },
							{"3x1","3x2","3x3"}};
	Object columnNames[] = { "Col 1", "Col 2", "Col 3" };
	JTable table = new JTable(rowData, columnNames);
	private JLabel jLabel1 = new JLabel();
	public Frame1()
	{
		try
		{
	       	jbInit();
		}
		catch (Exception e)
		{
	       	e.printStackTrace();
		}
	}
	private void jbInit() throws Exception
	{
		this.getContentPane().setLayout( null );
		this.setSize( new Dimension(400, 300) );
		table.setBounds(new Rectangle(135, 85, 145, 115));
		jLabel1.setText("jTable");
		jLabel1.setBounds(new Rectangle(115, 45, 90, 15));
		this.getContentPane().add(jLabel1, null);
		this.getContentPane().add(table, null);
	}
	public static void main(String[] args)
	{
    	Frame1 obj = new Frame1();
		obj.setVisible(true);
	}
}
			

Package : Javax.swing

Class: javax.swing.JTree

Note :JTree implements the grahical tree structure and this structure to display the various nodes in hierarchical manner,each node represents the data.

Constructors	Description
JTree()	This constructor returns a JTree with a sample model.
JTree(Object[] value)	This Constructor returns a JTree with each element of the specified array as the child of a new root node which is not displayed.
JTree(TreeModel newModel)	This Constructor returns an instance of JTree which displays the root node -- the tree is created using the specified data model.

Method	Description
add(Object node)	Invoked by the root node in order to add a node to root node.
getNewLeadSelectionPath()	Returns the tree path object.
getLastPathcomponent()	Returns the item or element that is selected by the user.
getPathCount()	Invoked to know the number of paths available in node.

Example :

package client;

import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTree;

public class Frame1  extends JFrame
{
	private JTree jTree1 = new JTree();
	private JLabel jLabel1 = new JLabel();
	public Frame1()
	{
		try
		{
	    	jbInit();
		}
		catch (Exception e)
		{
	    	e.printStackTrace();
		}
	}
	private void jbInit() throws Exception
	{
		this.getContentPane().setLayout( null );
		this.setSize(new Dimension(400, 264));
		jTree1.setBounds(new Rectangle(65, 30, 115, 135));
		jLabel1.setText("jTree");
		jLabel1.setBounds(new Rectangle(25, 10, 50, 15));
		this.getContentPane().add(jLabel1, null);
		this.getContentPane().add(jTree1, null);
	}
	public static void main(String agrs[])
	{
        Frame1 frame=new Frame1();
        frame.setVisible(true);
    }
}

Output :

Package : Javax.swing

Class: javax.swing.JComboBox

Note :JComboBox class used to add a drop-down list of items to a container.

Constructors	Description
JComboBox()	This constructor creates an empty JComboBox instance.
JComboBox(Object [] Items)	This Constructor creates a JComboBox instance that contains the elements in the specified array.

Method	Description
addItem()	Invoked by combo box object to add item to combo box.
getSelectedIndex ()	This method returns the index of the selected item.
RemoveItem()	Use to remove the seleted item from combo box.
removeAll()	Use to remove all the element present in combo box.

Example :

import javax.swing.*;
import java.awt.*;
import java.awt.Color;
import java.awt.event.*;

public class Frame3 implements  ActionListener
{
	JComboBox colorChooser;
	JPanel redbox, bluebox, greenbox, yellowbox;
	public JPanel createContentPane ()
	{
		JPanel GUI = new JPanel();
		// To create a JComboBox.
		// This gives the ComboBox the list of selections you can make.
		String colors[] = {"Red", "Blue", "Green", "Yellow"};
		colorChooser = new JComboBox(colors);
		colorChooser.setSelectedIndex(1);
		colorChooser.addActionListener(this);
		JPanel boxPanel = new JPanel(new GridLayout(2, 2, 20, 20));
		redbox = createSquareJPanel(Color.red, 50);
		bluebox = createSquareJPanel(Color.blue, 50);
		greenbox = createSquareJPanel(Color.green, 50);
		yellowbox = createSquareJPanel(Color.yellow, 50);
		redbox.setVisible(false);
		greenbox.setVisible(false);
		yellowbox.setVisible(false);
		boxPanel.add(redbox);
		boxPanel.add(bluebox);
		boxPanel.add(greenbox);
		boxPanel.add(yellowbox);
		JPanel bottomPanel = new JPanel();
		bottomPanel.setLayout(new BoxLayout(bottomPanel, BoxLayout.PAGE_AXIS));
		bottomPanel.add(Box.createRigidArea(new Dimension(0,10)));
		bottomPanel.add(colorChooser);
		bottomPanel.add(Box.createRigidArea(new Dimension(0,20)));
		bottomPanel.add(boxPanel);
		bottomPanel.add(Box.createRigidArea(new Dimension(0,10)));
		GUI.add(bottomPanel);
		GUI.setOpaque(true);
		return GUI;
	}
	
	//  we create a square JPanel of a colour and set size
	// specified by the arguments in this method.
	
	private JPanel createSquareJPanel(Color color, int size)
	{
		JPanel Panel = new JPanel();
		Panel.setBackground(color);
		Panel.setMinimumSize(new Dimension(size, size));
		Panel.setMaximumSize(new Dimension(size, size));
		Panel.setPreferredSize(new Dimension(size, size));
		return Panel;
	}
	
	// This actionPerformed simply takes sets the visibility of each
	// coloured box depending on what is selected on the combo box.
	
	public void actionPerformed(ActionEvent e)
	{
		int temp;
		if(e.getSource() == colorChooser)
		{
			temp = colorChooser.getSelectedIndex();
			switch(temp)
			{
				case 0: 
						redbox.setVisible(true);
						bluebox.setVisible(false);
						greenbox.setVisible(false);
						yellowbox.setVisible(false);
						break;
				case 1:
						redbox.setVisible(false);
						bluebox.setVisible(true);
						greenbox.setVisible(false);
						yellowbox.setVisible(false);
						break;
						case 2:
						redbox.setVisible(false);
						bluebox.setVisible(false);
						greenbox.setVisible(true);
						yellowbox.setVisible(false);
						break;
				case 3:
						redbox.setVisible(false);
						bluebox.setVisible(false);
						greenbox.setVisible(false);
						yellowbox.setVisible(true);
						break;
			}
		}
	}
	private static void createAndShowGUI()
	{
		JFrame.setDefaultLookAndFeelDecorated(true);
		JFrame frame = new JFrame(" JComboBox");
		Frame3 demo = new Frame3();
		frame.setContentPane(demo.createContentPane());
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.pack();
		frame.setVisible(true);
	}
	public static void main(String[] args)
	{
		//Schedule a job for the event-dispatching thread:
		//create and show this application's GUI.
		
		SwingUtilities.invokeLater(new Runnable()
		{
			public void run()
			{
				createAndShowGUI();
			}
		});
	}
}		

Output :

Package : Javax.swing

Class: javax.swing.JProgressBar

Note : It indicate how much percentage of an executing process is completed or remaining.

Constructors	Description
JProgressBar()	This constructor creates a horizontal progress bar that displays a border but no progress string.
JProgressBar(int x)	This Constructor creates a progress bar with the specified orientation, which can be either JProgressBar.VERTICAL or JProgressBar.HORIZONTAL.

Method	Description
getMinimum()	This Method used to get least value of progress bar.
getMaximum()	This method used to get the optimum value of progress bar.
getOrientation()	This method used to get orientation of progress bar.
setOrientation()	This method used to set orientation of progress bar.
setStringPainted()	This method used to display the percentage of progress of task bar.

Example :

			
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingUtilities;

public class Frame4 extends JPanel
{
	JProgressBar progress;
	static final int MY_MIN = 0;
	static final int MY_MAX = 100;
	public Frame4()
	{
	    progress = new JProgressBar();
	    progress.setMinimum(MY_MIN);
	    progress.setMaximum(MY_MAX);
	    add(progress);
	}
	public void updateBar(int newValue)
	{
		progress.setValue(newValue);
	}
	public static void main(String args[])
	{
		final Frame4 it = new Frame4();
		JFrame frame = new JFrame("Progress Bar");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setContentPane(it);
		frame.pack();
		frame.setVisible(true);
		for (int i = MY_MIN; i <= MY_MAX; i++)
		{
			final int percent = i;
			try
			{
				SwingUtilities.invokeLater(new Runnable()
				{
					public void run()
					{
						it.updateBar(percent);
					}
				});
				java.lang.Thread.sleep(100);
			}
			catch (InterruptedException e)
			{
				;
			}
		}
	}
}

Output :