sheshi.java

摄氏温度和华氏温度转换

//<applet code = "sheshi.class" height=100 width=300> </applet>
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class sheshi extends Applet implements ActionListener
{
	Label label1,label2;
	TextField text1,text2;
	Button button1,button2;
	public void init()
	{
		label1=new Label("摄氏温度");
		label2=new Label("华氏温度");
		text1=new TextField(10);
		text2=new TextField(10);
		button1=new Button("转华氏");
		button2=new Button("转摄氏");
		setLayout(new GridLayout(3,2));
		add(label1);
		add(text1);
		add(label2);
		add(text2);
		add(button1);add(button2);
		button1.addActionListener(this);
		button2.addActionListener(this);
	}
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource() == button1)
		{
			float 摄氏;
			摄氏=Float.parseFloat(text1.getText());
			text2.setText(String.valueOf(摄氏*9.0/5.0+32.0));	
		}
		if(e.getSource() == button2)
		{
			float 华氏;
			华氏=Float.parseFloat(text2.getText());
			text1.setText(String.valueOf((华氏-32)*5.0/9.0));	
		}
	}
}