taxapplet.java

这是个计算Tax的小java程序

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class TaxApplet extends Applet implements ActionListener
{
	Button button1;
	TextField textField1, textField2;

	public void init()
	{
		Label salary, tax;
		setBackground(Color.white);
		setLayout(new FlowLayout(FlowLayout.RIGHT));

		salary = new Label("工资");
		textField1 = new TextField(8);

		tax = new Label("税款");
		textField2 = new TextField(20);

		button1 = new Button("计算");

		button1.addActionListener(this);

		add(salary);
		add(textField1);
		add(tax);
		add(textField2);
		add(button1);
	}

	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==button1)
		{
			Tax calTax = new Tax(Double.parseDouble(textField1.getText()));
			textField2.setText(String.valueOf(calTax.getTax()));
		}
	}
};