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