java小程序帮我看一下哪里错了？

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class WelcomeApplet extends Applet implements ActionListener
{
Label lblName;
TextField txtName;
TextField txtDisp;
public void init()
{
lblName=new Lable("张乐天");
txtName=new TextField(8);
txtDisp=new TextField(20);
add(lblName);
add(txtName);
add(txtDisp);
txtName.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
txtDisp.setText(txtName.getText()+"欢迎来到java世界");
}
public static void main(String args[])
{
Frame f=new Frame("欢迎");
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});
}
WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();
}

编译提示错误~后来越改越乱~~ 请帮我看一下~

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（1）lblName=new Lable("张乐天");Label写错了，改为lblName=new Label("张乐天");

（2）WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();这一段放错地方了，应该放到main()里面

修改好的完整历御代码如下，编肢烂陪历蠢译没问题，我试过了～！
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class WelcomeApplet extends Applet implements ActionListener
{
Label lblName;
TextField txtName;
TextField txtDisp;
public void init()
{
lblName=new Label("张乐天");
txtName=new TextField(8);
txtDisp=new TextField(20);
add(lblName);
add(txtName);
add(txtDisp);
txtName.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
txtDisp.setText(txtName.getText()+"欢迎来到java世界");
}
public static void main(String args[])
{
Frame f=new Frame("欢迎");
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});

WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();
}

}

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WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();

这部分代码应该写在main函数里面。你写在外面了.吧咐饥main函衡友返数的大括号放到a.start();的后面告备

建议你用IDE写代码。比如Ecplise.

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package hc.test;
import java.applet.Applet;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class WelcomeApplet extends Applet implements ActionListener
{
Label lblName;
TextField txtName;
TextField txtDisp;
public void init()
{
lblName=new Label("张乐天");
txtName=new TextField(8);
txtDisp=new TextField(20);
add(lblName);
add(txtName);
add(txtDisp);
txtName.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
txtDisp.setText(txtName.getText()+"欢迎来到java世界");
}

public static void main(String args[])
{
Frame f=new Frame("欢迎");
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
System.exit(0);
}
});

WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();
}

}

你运行一下

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WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("早让侍Center",a);
f.setSize(400,300);
f.show();
a.start();

这部分代陆吵码应滑敬该写在main函数里面

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WelcomeApplet a=new WelcomeApplet();
a.init();
f.add("Center",a);
f.setSize(400,300);
f.show();
a.start();
你笑雹这段代码居然在main外郑册。喊升宏。。。

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