Java GUI

[program junkie]

I'm teaching myself Java and need some help
This is new to me, and I'm having a hard time getting started with a program

I'm trying to create a GUI that allows me to type in feet and the computer calculate the number of inches in a foot.

Any help would be appreciated

[program junkie]

Using netbeans 6.9.1 for IDE

[sunde887]

What have you done so far? This isn't especially challenging, you should start here: Trail: Creating a GUI With JFC/Swing (The Java™ Tutorials)

Try seeing what you come up with and post your attempt here with some specific questions.

[program junkie]

Thanks for responding

First of all, I'm using netbeans as the Ide. How do I open this file and extend the JFrame?

[CuddlyKittens11]

Thanks for responding

First of all, I'm using netbeans as the Ide. How do I open this file and extend the JFrame?

I don't know what you mean by "open this file," any details would help.

But extending a JFrame is easy, example:

import javax.swing.*;

public class window extends JFrame {
    window() {
        super("JFrame Extension Example");    // Call this so we get a window title
        setSize(200, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    // This runs the program
    public static void main(String args[]) {
        window wnd = new window();

        wnd.setVisible(true);    // So we can see the window
    }
}

That's all there is to it.

Tha

[program junkie]

I'm trying to write a similar program to this one.

I want to calculate feet and inches though

I want the program to have the ActionListener listen to the textfield for buttons being clicked




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

public class FahrenheitGUI extends JFrame
{
private JLabel tempQuestionLabel = new JLabel( );
private JTextField tempBox = new JTextField( );
private JLabel tempAnswerLabel= new JLabel( );;
private Container contentPane;
private JButton submitButton = new JButton( );

public FahrenheitGUI ()
{
createGUI();
} // ends Welcome constructor

private void createGUI ( )
{
// get content pane and set the layout to null
contentPane = getContentPane();
contentPane.setBackground(Color.white);
contentPane.setLayout(null);

// set up the question label
tempQuestionLabel.setText ("Enter inches:");
tempQuestionLabel.setLocation(0,0);
tempQuestionLabel.setSize(200,30);
contentPane.add(tempQuestionLabel);

// set up the textfield for user entry
tempBox.setText("0");
tempBox.setLocation(210,0 );
tempBox.setSize(100,30 );
contentPane.add(tempBox);

// set up the submit button
submitButton.setText("Submit");
submitButton.setLocation(50,100);
submitButton.setSize(100,30);
contentPane.add(submitButton);

// set up the label where answer will be displayed
tempAnswerLabel.setText (" ");
tempAnswerLabel.setLocation(0,200);
tempAnswerLabel.setSize(300,30);
contentPane.add(tempAnswerLabel);

// set properties of window
setTitle ("Fahrenheit Program");
setSize(400,400);
setVisible(true);

}// ends creatGUI method.

public static void main ( String [] args )
{
FahrenheitGUI application = new FahrenheitGUI( );
application.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
}// ends main


}// ends program

[CuddlyKittens11]

First, you need to add this statement to your imports

import java.awt.event.*;

It has all the event functionality.

Now, you can easily implement an action listener like this:

anyButton.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent ae) {
        // Put your code where for what you want to when you press a button
    }
});

Also, when posting code here, please use the [code] tags.