Help with this JButton

[raffs03]

public class Trypack extends JFrame  {
    
    public Trypack(){
        
        final JFrame Main1 = new JFrame();
        final JFrame Visual3 = new JFrame();
        

          Btn1 = new JButton("Login");
          Btn2 = new JButton("Clear");
          Btn3 = new JButton("View Students");
          Btn4 = new JButton("Add Students");
          Btn5 = new JButton("Save");

        Main1.add(Lbl1);
        Main1.add(Txt1);
        Main1.add(Lbl2);
        Main1.add(Txt2);
        Main1.add(Btn1);
        Main1.add(Btn2);

        Visual3.add(Lbl3);
        Visual3.add(Txt3);
        Visual3.add(Lbl4);
        Visual3.add(Txt4);
        Visual3.add(Lbl5);
        Visual3.add(Txt5);
        Visual3.add(Lbl8);
        Visual3.add(Txt7);
        Visual3.add(Lbl6);
        Visual3.add(Txt6);
        Visual3.add(Lbl7);
        Visual3.add(cmbx);
        Visual3.add(Btn5);
        Visual3.add(Btn2);

and this is my problem:

Main1.add(Btn2);
Visual3.add(Btn2);

I want to make Btn2 to appear in Main1 Frame and in Visual3 Frame but when i run the program the Btn2 is disappearing in Main1 frame. please help me with this i don't know how to solve this because im newbie in programming :D

[PhHein]

A JButton can have only one parent, so it's not possible to use it in two containers at the same time. You could add the same action/actionListener to two buttons to have them doing the same.

[Ronin]

Hi raffs03,

Adding the same object to different jFrames goes against the concept of OO (Object Orientated). Instead you will need to create two buttons, both of which can have identical text.

Generally speaking, I have never seen JFrame declared as final and objects are usually added to a JPanel which is then added to a JFrame.

Regards.

[raffs03]

Now i know thanks for answering my question I am really a newbie at programming :D

[KevinWorkman]

Generally speaking, I have never seen JFrame declared as final and objects are usually added to a JPanel which is then added to a JFrame.

Having a final JFrame variable is fine, and actually makes a lot of sense. I'd be more worried about the unnecessary extending of JFrame, plus the nonstandard naming conventions.

Also note that the JFrame add() method simply passes the Component to its content pane, which is by default a JPanel. Also note that the default layout of content panes is BorderLayout, so the OP is going to have other problems judging from how he's adding the components now.

[Ronin]

I'd be more worried about the unnecessary extending of JFrame, plus the nonstandard naming conventions.

Which will change with experience... or until someone points it out.

Cheers for the additonal info.

Regards.