Hi Guys,

I was trying to build a library catalogue with GUI (Graphic User Interface) which consists of two text boxes and four buttons.

I have actually created the layout, but I dont know how to add actions to the buttons.

Could anyone help me please.

the Question is:

for the search button which is searching for list of book that contain within their description whatever is in the description text field and/ or is currently on loan to the borrower matching the number in the borrow text field.


What I have done is as follow:

import java.util.ArrayList;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LibraryCatalog extends JFrame
{
private ArrayList<Item> items;
JPanel contentPane;
BorderLayout borderLayout1 = new BorderLayout ();
JPanel centrePanel = new JPanel ();
JTextField titleTextField = new JTextField ();
JTextField IDTextField = new JTextField ();
JPanel southPanel = new JPanel ();
JButton addButton = new JButton ();
JPanel northPanel = new JPanel ();
JLabel northLabel = new JLabel ();
JButton searchButton = new JButton ();
JButton borrowingButton = new JButton ();
JButton returnButton = new JButton ();

//Construct the frame
public LibraryCatalog()
{
items = new ArrayList<Item>();
makeFrame ();
setVisible (true);

}

//Component initialization
private void makeFrame ()
{
contentPane = (JPanel) this.getContentPane ();
contentPane.setLayout (borderLayout1);
this.setSize (new Dimension(420, 160));
this.setTitle ("Library Catalog");
titleTextField.setText ("");
titleTextField.setColumns (20);
IDTextField.setText ("");
IDTextField.setColumns (16);
addButton.setText ("Add a Book");
addButton.addActionListener (new java.awt.event.ActionListener ()
{
public void actionPerformed (ActionEvent e)
{
addButton_actionPerformed (e);
}
});
northLabel.setText ("");
searchButton.setText ("Search");
searchButton.addActionListener (new java.awt.event.ActionListener ()
{
public void actionPerformed(ActionEvent e)
{
searchButton_actionPerformed(e);
}
});

borrowingButton.setText ("Borrowing");
borrowingButton.addActionListener (new java.awt.event.ActionListener ()
{
public void actionPerformed(ActionEvent e)
{
borrowingButton_actionPerformed(e);
}
});

returnButton.setText ("Return a Book");
returnButton.addActionListener (new java.awt.event.ActionListener ()
{
public void actionPerformed(ActionEvent e)
{
returnButton_actionPerformed(e);
}

});
contentPane.add(centrePanel, BorderLayout.CENTER);
centrePanel.add(titleTextField, null);
centrePanel.add(IDTextField, null);
contentPane.add(southPanel, BorderLayout.SOUTH);
southPanel.add(addButton, null);
southPanel.add(searchButton, null);
southPanel.add(borrowingButton, null);
southPanel.add(returnButton, null);
contentPane.add(northPanel, BorderLayout.NORTH);
northPanel.add(northLabel, null);
}

//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e)
{
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING)
{
System.exit(0);
}
}

void addButton_actionPerformed(ActionEvent e)
{
String theTitle= this.titleTextField.getText();
int userID= Integer.parseInt(this.IDTextField.getText());

this.addItem(new Item(theTitle,userID));//create a new object of the class Item
}

void searchButton_actionPerformed(ActionEvent e)
{

}


void borrowingButton_actionPerformed(ActionEvent e)
{


}
void returnButton_actionPerformed(ActionEvent e)
{



}

public void addItem(Item theItem)
{
items.add(theItem);
}

//Main method
public static void main(String[] args)
{
new LibraryCatalog();
}
}

Thanks for your help