Thread: Having problems with GUI Interface

Hello again!

In class we started this chapter on Graphics and I am struggling to understand it, it seems like it all hit me at once, I did the readings but it just seems like gibberish.

My problem, is that in the GUI it keeps overriding the last data it put up.

Here's my code:

First the GUI

//CameraGUI
 
import javax.swing.*;
import java.awt.*;
 
public class CameraGUI extends JFrame
{
	JTextArea ta = new JTextArea(25,40);
 
	JScrollPane sp = new JScrollPane(ta, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
		ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
 
	JPanel pane = new JPanel();
 
	public CameraGUI() 
	{
		super("Camera Inventory Program");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setBounds(100,100,500,500);
		pane.add(sp);
		add(pane);
		setVisible(true);
	}
}

Then the Main program

//Thomas Harrald
//IT215 Checkpoint Inventory Program
//Camera Inventory program
import java.util.Arrays;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.IOException;
 
// Stores and then gets info on a Camera
public class CameraProgram4
{
 
	static CameraGUI mainGUI = new CameraGUI();
 
	public static void main(String args[])
	{
 
		CameraClass[] cameras;
 
		CameraClass nikonCamera= new CameraClass( 3100, "Nikon", "Electronics", 5, 10.00);
		CameraClass sonyCamera = new CameraClass( 4500, "Sony", "Electronics", 10, 300.00);
		CameraClass canonCamera= new CameraClass( 1550, "Canon", "Electronics", 3, 40.00);
		DigitalCamera kodakCamera = new DigitalCamera( 3000, "Kodak", "Electronics", 20,5.00, 1080);
 
		cameras = new CameraClass[ 4 ];
 
		cameras[ 0 ] = nikonCamera;
		cameras[ 1 ] = sonyCamera;
		cameras[ 2 ] = canonCamera;
		cameras[ 3 ] = kodakCamera;
 
 
		mainGUI.ta.setText(cameras[0].toString());
		mainGUI.ta.setText(cameras[1].toString());
 
 
	}
}

If someone needs the other two files I can put them up.

Thanks a lot Norm, I'll take a look at that.

Originally Posted by Norm

Where are you trying to show these two items? The only place I see them used is with a text area. The setText() sets the text to be displayed. Is that the method you want to use? The text area class has other methods that might show data differently.
Read the API doc for the text area to see:
Java Platform SE 6

Norm is there anything specific to look for GUI related? There is a LOT of data in the package lol.

I'll take a look at better methods in the morning...

I modified the toString() to include a \n, and appended all the arrays elements toString().

It gets the job done... but I will try to find a better method. Heres the new code:

//Thomas Harrald
//IT215 Checkpoint Inventory Program
//Camera Inventory program
import java.util.Arrays;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.IOException;
 
// Stores and then gets info on a Camera
public class CameraProgram4
{
 
	static CameraGUI mainGUI = new CameraGUI();
 
	public static void main(String args[])
	{
 
		CameraClass[] cameras;
 
		CameraClass nikonCamera= new CameraClass( 3100, "Nikon", "Electronics", 5, 10.00);
		CameraClass sonyCamera = new CameraClass( 4500, "Sony", "Electronics", 10, 300.00);
		CameraClass canonCamera= new CameraClass( 1550, "Canon", "Electronics", 3, 40.00);
		DigitalCamera kodakCamera = new DigitalCamera( 3000, "Kodak", "Electronics", 20,5.00, 1080);
 
		cameras = new CameraClass[ 4 ];
 
		cameras[ 0 ] = nikonCamera;
		cameras[ 1 ] = sonyCamera;
		cameras[ 2 ] = canonCamera;
		cameras[ 3 ] = kodakCamera;
 
		String guiDisplay ="";
 
		for( int counter=0; counter <=3; counter++)
		{
			guiDisplay += cameras[counter].toString();
		}
 
		mainGUI.ta.setText(guiDisplay);
 
 
 
	}
}

I did see a lot of cool methods I'd like to try out. Any suggestions?