Problem with JScrollBar

[Arthur]

import java.awt.Container;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollBar;

class ExamJScrollBar extends JFrame
{
private JLabel jlb1,jlb2;
private JScrollBar jsb;
private Container con;
    public ExamJScrollBar()
    {
        con=getContentPane();
        con.setLayout(null);

        jlb1=new JLabel("JSCROLLBAR");
        jlb1.setBounds(300, 40, 300, 20);
        con.add(jlb1);

        jlb2=new JLabel("Contructor");
        jlb2.setBounds(20, 700, 100, 20);
        con.add(jlb2);

        jsb=new JScrollBar();
        jsb.setBounds(780,0,20,580);
        con.add(jsb);
    }
    public static void main(String[] args)
    {
        ExamJScrollBar ex = new ExamJScrollBar();
        ex.setVisible(true);
        ex.setBounds(0,0,800,600);
        ex.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

When I drag-down ScrollBar, I don't see "Contructor" with Location (20,700). :confused::confused::confused:
Please! Help me! :)

[fraternityleave]

The location of the label "Constructor" is beyond the frame borders (y coordinate). the y-coordinate of the border of the frame is 600 while you are trying to add a label at the y-coordinate 700.

Try changing the
jlb2.setBounds(20, 700, 100, 20);

to

jlb2.setBounds(20, 550, 100, 20);

[camickr]

Better yet learn how to use Layout Managers so you don't have this type of problem. Read the section from the Swing tutorial on Layout Managers.

[Steve11235]

Another good point. Swing will automatically move things around in a way that makes sense as the window size changes, if you use a layout manager correctly.