📄 help.java
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import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Help extends Frame implements ActionListener{
Help(){
setTitle("帮助");
setVisible(true);
setLayout(null);
setSize(500, 500);
setBackground(Color.orange);
JTextArea t=new JTextArea();
add(t);
t.setFont(new Font("SansSerif",Font.BOLD,17));
t.setBounds(0, 0, 500, 370);
t.setBackground(Color.orange);
JButton b = new JButton("确 定");
add(b);
b.setBounds(127, 400, 230, 36);
b.addActionListener(this);
File fi=new File("7.txt");
try{
FileInputStream in1 = new FileInputStream("7.txt");
byte [] buf = new byte[1024];
int len = in1.read(buf);
String s=new String(buf,0,len);
t.setText(s);
}
catch(Exception ex){}
}
public void actionPerformed(ActionEvent e){
dispose();
}
}
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