利用java制作一个小的目录查询器的方法

importjava.util.*;

importjavax.swing.*;

importjava.awt.*;

importjava.io.*;

importjava.awt.event.*;

classMyWindow{

privateFrame f1;

privateButton bt1;

privateTextField tx1;

privateTextArea tx2;

MyWindow(){

init();

}

publicvoidinit(){

f1=newFrame("窗体");

f1.setBounds(300,100,600,500);

f1.setLayout(newFlowLayout());

bt1=newButton("按钮");

tx1=newTextField(30);

tx2=newTextArea(25,70);

f1.add(tx1);

f1.add(bt1);

f1.add(tx2); event();

f1.setVisible(true);

}

privatevoidevent(){

bt1.addActionListener(newActionListener(){

publicvoidactionPerformed(ActionEvent e){

String dirpath=tx1.getText();

File dir =newFile(dirpath);

if(dir.exists()&& dir.isDirectory()){

String names[] =dir.list();

for(String name:names){

tx2.setText(name+"rn");

}

}

// System.out.println(s);

//tx2.append(s);

}

});

f1.addWindowListener(newWindowAdapter(){

publicvoidwindowClosing(WindowEvent E){

System.exit(0);

}

});

}

publicstaticvoidmain(String args[]){

newMyWindow();

}

}