import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Appletinout extends Applet implements ActionListener{
public static void main(String arg[]){
Frame frame=new Frame();
Appletinout app=new Appletinout();
app.init();
frame.add(app);
frame.setSize(200,100);
frame.show();
}
TextField in = new TextField(6);
Button btn=new Button("确定");
Label out=new Label(" ");
public void init(){
setLayout(new FlowLayout());
add(in);
add(btn);
add(out);
btn.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
String s=in.getText();
double d=Double.parseDouble(s);
double q=d*d*d;
out.setText(d+"立方是:"+q);
}
}
运行后是文本框 按钮 标签 都在一行问下谁能帮我解决下怎么把他们放在不同行。
import java.awt.*;
import java.awt.event.*;
public class Appletinout extends Applet implements ActionListener{
public static void main(String arg[]){
Frame frame=new Frame();
Appletinout app=new Appletinout();
app.init();
frame.add(app);
frame.setSize(200,100);
frame.show();
}
TextField in = new TextField(6);
Button btn=new Button("确定");
Label out=new Label(" ");
public void init(){
setLayout(new FlowLayout());
add(in);
add(btn);
add(out);
btn.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
String s=in.getText();
double d=Double.parseDouble(s);
double q=d*d*d;
out.setText(d+"立方是:"+q);
}
}
运行后是文本框 按钮 标签 都在一行问下谁能帮我解决下怎么把他们放在不同行。
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Appletinout extends Applet implements ActionListener{
public static void main(String arg[]){
Frame frame=new Frame();
Appletinout app=new Appletinout();
app.init();
frame.add(app);
frame.setSize(200,100);
frame.show();
}
TextField in = new TextField(6);
Button btn=new Button("确定");
Label out=new Label(" ");
public void init(){
//setLayout(new GridLayout(0, 1));
Panel panel = new Panel(new GridLayout(0, 1)); //用GridLayout
panel.add(in);
panel.add(btn);
panel.add(out);
add(panel);
btn.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
String s=in.getText();
double d=Double.parseDouble(s);
double q=d*d*d;
out.setText(d+"立方是:"+q);
}
}