testapplet.java

corejava的一部分源码,与corejiavasource中的有区别。

import java.applet.Applet;
import java.awt.*;

public class TestApplet extends Applet {
    public void init() {
		setLayout(new BorderLayout());
		add(new NullLayoutTestPanel(), "Center"); 
    }
}
class NullLayoutTestPanel extends Panel {
	private Button         button;
	private Choice         choice;
	private TextField      textfield;
	private Checkbox       checkbox;
	private List           list;
	private Label          label;
	private Scrollbar      scrollbar;

	public NullLayoutTestPanel() {
		createComponents();
		setLayout(null);

		add(button);        add(choice);
		add(textfield); 	add(checkbox);           
		add(scrollbar); 	add(list);               
		add(label);

		choice.setLocation(10,35);
		label.setLocation(230,120);
		checkbox.setLocation(120,120);
		textfield.setLocation(120,10);
		scrollbar.setLocation(120,160);
		button.setLocation(375,10);
		list.setLocation(230,10);
	}
	public Insets getInsets() {
		return new Insets(10,10,10,10);
	}
	public void paint(Graphics g) {
		System.out.println(choice.getBounds());
		System.out.println(label.getBounds());
		System.out.println(checkbox.getBounds());
		System.out.println(textfield.getBounds());
		System.out.println(scrollbar.getBounds());
		System.out.println(button.getBounds());
		System.out.println(list.getBounds());
	}
	private void createComponents() {
		button         = new Button("A Button");
		choice         = new Choice();
		textfield      = new TextField("textfield");
		checkbox       = new Checkbox("Checkbox");
		list           = new List();
		label          = new Label("A Label");
		scrollbar      = new Scrollbar(Scrollbar.HORIZONTAL);

		choice.add("item one");
		choice.add("item two");
		choice.add("item three");
		choice.add("item four");

		list.add("list item one");
		list.add("list item two");
		list.add("list item three");
		list.add("list item four");
		list.add("list item five");
		list.add("list item six");
		list.add("list item seven");
		list.add("list item eight");
		list.add("list item nine");

		scrollbar.setValues(0,100,0,1000);
	}
}