Java做的一个小程序，随机点名器
1.import .*;
2.import .*;
3.import
import
import
public class DianName extends Frame{
private String fileName="";
private File f;
private FileReader fr;
private BufferedReader br;
private List
private String strName;
private Label labelName;
private Button btOK;
public static void main(String[] args){
DianName dn=new DianName();
();
();
}
public void newFrame(){
labelName=new Label("显示姓名");
btOK=new Button("开始");
(300,300);
(false);
(500,400);
(labelName,;
(btOK,;
();
(true);
(new WindowAdapter(){
public void windowClosing(WindowEvent e){
(0);
}
});
(new ButtonAction());
}
public void read(){
try{
f=new File(fileName);
if(!()){
();
}
fr=new FileReader(f);
br=new BufferedReader(fr);
String str=();
while(str!=null){
(str);
str=();
}
}catch(Exception e){
();
}
}
public void write(){
try{
int index=(int)()*());
strName=(index);
}catch(Exception e){
();
}
}
private class ButtonAction implements ActionListener{ public void actionPerformed(ActionEvent e){
write();
(strName);
}
}
}