strong textpackage xcada; import com.mysql.jdbc.Connection; import com.mysql.jdbc.PreparedStatement; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.ResultSet; import javax.swing.JButton; import javax.swing.JLabel;

public class MyNew3 extends javax.swing.JFrame { private int q; private String r; private String data[ ]={ }; private String tagNo; private String findTagNo[ ]={ }; private JButton button1[]; private int m=0; private String t3=""; private String str5=""; private String t2="";

    public  MyNew3( String t2,String t3,int q)
    {
    initComponents();
    this.q=q;
    this.t2=t2;
    this.t3=t3;
     StringThread th = new StringThread ();
      th.start();





}
MyNew3() {

}

private JLabel createlabel(int i,String tagNo) { final String tagNo1=tagNo; System.out.println(""+i); JLabel label1= new JLabel();

   this.button1[i]=new JButton();

    this.jPanel1.add(label1);//***Here is error coming..***
  // System.out.println("I m not here");
     System.out.println("I m here");
   jPanel1.add(button1[i]);
   label1.setText(data[i]);
   button1[i].setText("Update");
   label1.setBounds(110,100+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i, 375, 20);
   button1[i].setBounds(110,120+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i+i, 75, 15);
   label1.setFont(new Font("Tahoma", Font.BOLD, 14));


   button1[i].addActionListener(new ActionListener(){


        @Override
        public void actionPerformed(ActionEvent e) {



            MyNew4 form4=new MyNew4(tagNo1);

                                                   }




});
   return label1;
  //return button1;

}

public void display() {

       try
    {   
           Connection con=(Connection) ConnectionFactory.getConnection();
           String sql1="SELECT * FROM people";
           PreparedStatement ps2=(PreparedStatement) con.prepareStatement(sql1);
           ResultSet rs2=ps2.executeQuery();
           System.out.println(rs2);
           while(rs2.next())
           {



         this.str5+=rs2.getString("Type")+":"+rs2.getString("Temp")+"Tag Number :"+rs2.getString("Tag")+"Unit :"+rs2.getString("Unit")+"\n#";
                          data=str5.split("#");
                            m++;


    }
    }

      catch(Exception e)
    {

    }
    JLabel label[]=new JLabel[m];
    this.button1=new JButton[m];
    System.out.println(""+m);
     for(int i=0;i<m;i++)
     {
        this.findTagNo=data[i].split("Tag Number :");
        this.findTagNo=findTagNo[1].split("Unit :");
       label[i]=createlabel(i,findTagNo[0]);

     }     

}

} class StringThread extends Thread {

StringThread()

{ super();

}

@Override public void run ( )

{

   while(true)  

 {


    try
    {
    new MyNew3().display();
   // System.out.println("hi11");
    this.sleep(1000);


 }

catch(Exception e)

{

 System.out.println("Hi");      
 System.out.println(e.toString());

}

}

}

} sir, i m facing problem in Dynamically update the label. when i m changing the the value in database , its dynamically not updated prblem is jPanel.add(label11); and also not setting the bounds properly... plz resolve it