java - How to add a JPanel to a JFrame with Runnable method -

when create jpanel , add jframe , add canvas (space) show jpanel , not of graphics. why showing jpanel when want show both of them @ same time?

if youre intent add canvas inside jpanel try change following lines in source

original code :

frame.add(p); frame.add(space, borderlayout.center);

suggested code :

 p.add(space);  frame.add(p, borderlayout.center);

if willing view both jpanel , canvas in jframe try giving positioning canvas also.but different layout better. try out given example.

original code :

    frame.setlayout(new borderlayout());      frame.add(p);     frame.add(space, borderlayout.center);

suggested code 1 : providing position jpanle in border layout.

    frame.setlayout(new borderlayout());      frame.add(p, borderlayout.north);     frame.add(space, borderlayout.center);

suggested code 2 : changing layout of jframe.

    frame.setlayout(new gridlayout(0,2));             frame.add(p);     frame.add(space);

for more information please refer official documentation[1].
[1]. https://docs.oracle.com/javase/tutorial/uiswing/layout/index.html

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