Use Applet or Application

Question

Hi,
We are doing a small project. It requires that we draw a simulation of an Array (2 dimensional), showing only the points of intersection as small colored circles.
This program has two TextFields to input the value of the array to which we need to draw a line.
Presently we have much of it in an application that 'prints' out on the command prompt. Hoping to stick to an application.
Any ideas???

Answer 1

This is code below:
1: can you help me draw something on that canvas
2: (if possible an array represented by dots)
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MatrixGui
     private Canvas can;
     private TextField kin;
     private TextField nin;
     private Label lkin;
     private Label lnin;
     private Frame fin;
     private Panel pin;
     private Panel pt;
     private Panel pf;
     private Panel ptf;
     private Panel pbut;
     private Panel all;
     private Button bin;
     private String txt1, txt2, otxt;
public MatrixGui() {
     can = new Canvas();
     bin = new Button("Submit");
     fin = new Frame("The Matrix");
     pin = new Panel();
     pt = new Panel();
     pf = new Panel();
     ptf = new Panel();
     all = new Panel();
     pbut = new Panel();
     kin = new TextField(2);
     nin = new TextField(2);
     lkin = new Label("Must be Between 1 and 16:  Enter k:");
     lnin = new Label("Must be Between 1 and 16:  Enter n:");
public void launch () {
     pt.setLayout(new GridLayout(2,1));
     pf.setLayout(new GridLayout(2,1));
     all.setLayout(new GridLayout(2,0));
     // pin.setLayout(new FlowLayout()); // default
     //all.setBackground(Color.gray);
     //pin.setSize(200, 200);
     can.setSize(300, 300);
     can.setBackground(Color.gray);
     //pin.add(can);
     pt.add(lkin);
     pf.add(kin);
     pt.add(lnin);
     pf.add(nin);
     ptf.add(pt);
     ptf.add(pf);
     pbut.add(bin);
     all.add(ptf);
     all.add(pbut);
     pin.add(all);
     pin.add(can);
     fin.add(pin);
     fin.setBounds(100, 100, 500, 600);
     fin.setVisible(true);
     TextFieldHandler textHandler = new TextFieldHandler();
     kin.addActionListener(textHandler);
     nin.addActionListener(textHandler);
     bin.addActionListener(textHandler);
// adding the function to close the window
     fin.addWindowListener( new WindowAdapter() {
          public void windowClosing(WindowEvent wn) {
               System.exit(0);
          // Inputs in number of messages - k
             int k = 0;
             int number = 0;
          try{
                  // Input int a = new Integer("23").intValue();
               k = Integer.parseInt(txt1);  // Convert string to integer
          // Inputs n X n mesh network value - n
             number = (int)Integer.parseInt(txt2); // Convert string to integer
          }catch(NumberFormatException e) {
               k = 0;
               number = 0;
     private class TextFieldHandler implements ActionListener {
          public void actionPerformed(ActionEvent e) {
          txt1 = kin.getText();
          txt2 = nin.getText();
          otxt = txt1 + txt2;
          if (e.getActionCommand().equals("Submit")) {
                     System.out.println("The input is " + otxt);
                    // paint();
          //JOptionPane.showMessageDialog(null,otxt);
     public void paint(Graphics g) {
          // g.drawString(otxt);
          g.setColor(Color.lightGray);
          g.draw3DRect(0, 0, 10, 20, false);
  static public void main( String args[] )
// Creating a new instance of the 'MatrixGui class' to launch the
// the GUI called the 'launch()'
     MatrixGui mx = new MatrixGui();
     mx.launch();
  }//end main
}