JFrame

[Jysh Reey]

I have designed a Java program using swing , such that while pressing a button in the main window , a JFrame window appears. Actually while closing the JFrame window, i want it alone to be closed. But while closing the JFrame window my main window also gets closed. How can i avoid this?

This is my coding.

import javax.swing.*;
import java.util.Calendar; 
import java.io.*;
import java.awt.image.BufferedImage;
import java.awt.*;
import java.awt.event.*;
import java.util.Date;
import javax.swing.JFrame;
import javax.imageio.ImageIO;
import java.io.File;
import java.text.*;

public class Window1 extends JFrame
{
   private JFrame frame1=new JFrame("PC CLEANER - List Of Files");
    public Date selecteddate= new Date();
    private JButton next,exit,list;
    private JComboBox daycb,loccb;
    private BufferedImage image,ima;
    private Icon ic1,ic2,ic3;
    public JTextField t1;
   private JLabel l1,lblname, lblname1,ll,ll1;
    int noofdays,m;
    private JScrollPane scrollPane;
   private String period,files;
   Object[][] filerec = new Object[200][3];
   private JPanel p1,p2;
   private Date d;
   private JTable table;
    String[] path = {"/home/jeyasri/Desktop","/home/jeyasri/Downloads","/home/jeyasri/Documents"};
    public Date mod=new Date();
    Calendar cal = Calendar.getInstance();
    public Window1()
    {
      System.out.println(selecteddate);    
       setSize(500,400);
       p1 = new JPanel();
       p1.setLayout(null);
       setTitle("PC Cleaner");
       try
 		{
 			 image = ImageIO.read(new File("/home/jeyasri/Desktop/logo.png"));
 			 
  		} 
		catch(IOException ie) 
		{
  			System.out.println("Error:"+ie.getMessage());
 		 }
	   l1=new JLabel(new ImageIcon(image));
      l1.setBounds(50,45,400,100);
      add(l1);
      ic1= new ImageIcon("/home/jeyasri/Desktop/deletestart.png"); 
      next = new JButton(ic1);
      next.setToolTipText("Delete the available files");
      next.setBounds(400,200,50,30);
      ic2= new ImageIcon("/home/jeyasri/Desktop/close.png"); 
      exit = new JButton(ic2);
      exit.setToolTipText("Quit");
      ic3= new ImageIcon("/home/jeyasri/Desktop/next.png"); 
      list = new JButton(ic3);
      exit.setBounds(400,260,50,30);
      daycb = new JComboBox();
      daycb.addItem("-select-");
      daycb.addItem("1 day");
      daycb.addItem("2 days");
      daycb.addItem("3 days");
      daycb.addItem("1 week");
      daycb.addItem("1 month");
      daycb.addItem("2 months");
      daycb.addItem("3 months");
      daycb.addItem("6 months");
      daycb.addItem("1 year");
      loccb=new JComboBox();
      loccb.addItem("-select");
      loccb.addItem("Documents");
      loccb.addItem("Downloads");
      loccb.addItem("Desktop");
      loccb.setBounds(250,220,150,20);
      lblname = new JLabel("SELECT THE FILES ");
      lblname.setBounds(80,125,150,100);
      lblname1 = new JLabel("MODIFIED BEFORE :");
      lblname1.setBounds(80,140,150,100);
      ll=new JLabel("SELECT LOCATION :");
      ll1=new JLabel("FILES AVAILABLE :");
      t1=new JTextField("");
      t1.setEditable(false);
      t1.setBounds(250,250,50,20);
      ll1.setBounds(80,210,150,100);
      ll.setBounds(80,180,150,100);
      p1.add(ll);
      p1.add(loccb);
      p1.add(ll1);
      p1.add(t1);
      p1.add(lblname);
      p1.add(lblname1);
      daycb.setBounds(250,180,150,20);
      p1.add(daycb);
      p2 = new JPanel();
      add(p1);
      Window1.event ae=new Window1.event();
      Window1.event1 ev=new Window1.event1();
      
      next.addActionListener(ev);
      exit.addActionListener(ev);
      list.addActionListener(ev);
      daycb.addActionListener(ae);
      p2.add(next);
      p2.add(exit);
      p2.add(list);
      add(p2,BorderLayout.SOUTH);  
    }
   public Date Modified(int m,int flag)
   {
   //  subtracting days fiom the given date
       if (flag==0)
       {
         cal.add(Calendar.DATE, -m);  
       }
       if(flag==1)
       { 
        // Subtracting months from the given date 
          cal.add(Calendar.MONTH, -m); 
        }
        // Subtracting years from given date 
       if(flag==2)
       {
          cal.add(Calendar.YEAR,-m);  
       }
       return (cal.getTime());
   }
   public class event implements ActionListener
   {
     public void actionPerformed(ActionEvent ae)
      {
         daycb=(JComboBox)ae.getSource();
         period=(String)daycb.getSelectedItem();
         String temp;
       //Determining the selected value in combo box finding the appropriate last modified date required
         System.out.println(period);         
         if (period.equals("1 day"))
            mod=Modified(1,0);
         if (period.equals("2 days")) 
            mod=Modified(2,0);
         if (period.equals("3 days")) 
            mod=Modified(3,0);
         if (period.equals("1 week"))
            mod=Modified(7,0); 
         if (period.equals("1 month"))
            mod=Modified(1,1); 
         if (period.equals("2 months"))
            mod=Modified(2,1); 
         if (period.equals("3 months"))
            mod=Modified(3,1); 
         if (period.equals("6 months"))
            mod=Modified(6,1); 
         if (period.equals("1 year"))
            mod=Modified(1,2);
         System.out.println(mod);      
       //modified files listing
         int j=0,k=0;
         m=0;
	     System.out.println("S.no    File name			Last Modified");
        System.out.println("~~~~    ~~~~~~~~~			~~~~~~~~~~~~~~");	
         while (j<3)
         {
               File folder = new File(path[j]);
               File[] listOfFiles = folder.listFiles(); 
               for (int i = 0; i < listOfFiles.length; i++) 
               {
                    if (listOfFiles[i].isFile()) 
                    {
                        files = listOfFiles[i].getName();
            
                        long t=listOfFiles[i].lastModified();
                        Date d=new Date(t);
			               if(mod.compareTo(d)==1)
                        {
                            System.out.println(++m + ")   " + files + "			" + new Date(t));
                            filerec[k][0]=k+1;
                            filerec[k][1]=files;
                            temp=convert(d);
                            filerec[k][2]=temp;
                            
                            k++;
                        }
                    }
                }
               j++;
         } 
         
 
         String we=Integer.toString(m);
         t1.setText(we); 
      }
   }
 public String convert(Date t)
 {
 DateFormat formatter ;
 formatter = new SimpleDateFormat("dd-MMM-yy");  
  String st = formatter.format(t);
  return (st);
 }
 class event1 implements ActionListener
 {
     public JFrame frame=new JFrame("Notification");
      
     public void actionPerformed( ActionEvent ev)
      {
         Object src=ev.getSource();
         if (src==list)
         {
         System.out.println("hai");
    Object columnNames[] = { "S.no", "File Name", "Last Modified" };
    table = new JTable(filerec, columnNames);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    scrollPane = new JScrollPane(table);
    frame1.add(scrollPane, BorderLayout.CENTER);
    frame1.setSize(500, 350);
    frame1.setVisible(true); 
    frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      
          }  
         if(src== next) 
         { 
         	JOptionPane.showMessageDialog(frame,"The availables files are deleted");
         }
         if (src== exit) 
         {
           System.exit(0);
         }
      }
      
 }
public class JTableFiles{
  public void table()
 {
  }
}
 public static void main(String[] args)
   {
       Window1 w1 = new Window1();
       w1.setVisible(true);
       w1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
}

[Rob Camick]

while pressing a button in the main window , a JFrame window appears. Actually while closing the JFrame window, i want it alone to be closed.

Secondary windows should be JDialogs, not JFrames. The default behaviour for a JDialog is DISPOSE_ON_CLOSE, which will only close the dialog and not the parent JFrame.

[Jysh Reey]

Thank you for the response . But made JFrame to close itself alone..

[Campbell Ritchie]

Rob C has pointed out the real error; you ought to correct that.

[Matthew Brown]

Look at line 220. What are you telling the program to do there?