Slip 27 - B) Write a java program to accept directory name in TextField and display list of files and subdirectories in List Control from that directory by clicking on Button.

Solution :

import java.awt.*;

import java.awt.event.*;

import java.io.*;

 

public class Slip27B extends Frame implements ActionListener{

    Graphics g;

    List l;

    TextField t1;

    Button b1;

    Label l1;

   

    public Slip27B(){

        this.setLayout(new FlowLayout());

        this.setSize(400,400);

        this.setVisible(true);

        l1 = new Label("Enter Directory ");

        t1 = new TextField(20);

        l = new List(10);

        b1 = new Button("Display");

        l1.setBounds(50,100,80,80);

        t1.setBounds(50,150,80,80);

        b1.setBounds(50,200,80,80);

        l.setBounds(50,300,100,100);

        add(l1);

        add(t1);

        add(b1);

        add(l);

        b1.addActionListener(this);

    }

 

    public void actionPerformed(ActionEvent e){

        if(e.getSource()==b1){

            try{

                String nm = t1.getText();

                File f1 = new File(nm + ":");

                String s1[]=f1.list();

                if(s1==null){

                    System.out.println("Dir not exist");

                }else{

                    for(int i=0; i<s1.length; i++){

                        l.add(s1[i]);

                    }

                }

            }catch(Exception ee){}

        }

    }

    public static void main(String args[]){

        new Slip27B();

    }

}