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POForm.java extends JFrame
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copied!<p>I'm a starter at Java. I'd like to create a Form class that extends JFrame to use. Everything works ok, it sizes and centers well on the screen. I just can't add components to it. What am I missing. Googled every class up, couldn't find anything.</p> <p>Main.java:</p> <pre><code>package pongLib; import pongUI.*; public class Main { public static void main(String[] args) { Form frm = new Form(600,500,"Pong"); } } </code></pre> <p>Form.java:</p> <pre><code>package pongUI; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Form extends JFrame { private int width; private int height; private int posx; private int posy; private String title; public Form(int width, int height, String title) { //call parent constructor super(); //set size this.width=width; this.height=height; //set title this.title=title; //get position(x,y) Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); Double x = (screen.getWidth()-this.width)/2; Double y = (screen.getHeight()-this.height)/2; posx = x.intValue(); posy = y.intValue(); //add components JLabel points1Label = new JLabel("The Rookie (aka You)"); this.addComponent(points1Label, 10, 50); //set form properties this.setLayout(null); this.setSize(width, height); this.setLocation(posx, posy); this.setResizable(false); this.setTitle(title); this.setVisible(true); public void addComponent(Component c, int posx, int posy) { c.setLocation(posx, posy); this.getContentPane().add(c,BorderLayout.CENTER); } } </code></pre>

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