displaying JSplitPane in JPanel

hello everybody,
i wanted Jsplitpane to be added in a Jpanel, which i further added to frame,

when i add jsplitpane directly to frame, it works well.

here is the code,

import javax.swing.*;
class splitpanedemo{
JSplitPane jp;
splitpanedemo(){
JFrame jf=new JFrame("demo");
jp=new JSplitPane();
jf.show();
jf.setVisible(true);
jf.add(jp);
jf.setSize(1500,1500);
}
public static void main(String[] args){
new splitpanedemo();
}
}

but when i want jsplitpane to be added on a panel, which i did through this code

import javax.swing.*;
class splitpanedemo{
JSplitPane jp;
JPanel jpa;
splitpanedemo(){
JFrame jf=new JFrame("demo");
jpa=new JPanel();
jp=new JSplitPane();
jf.show();
jf.setVisible(true);
jpa.add(jp);
jf.add(jpa);
jf.setSize(1500,1500);
}
public static void main(String[] args){
new splitpanedemo();
} }

this won't work well, the output differs,
the divider won't work well,

plz help me out of this.
thank you in advance.

First of all edit your posting and repost your code using the "Code tags" so the posted code retains its formatting and is readable.

In the first case the split pane is added to the content pane which uses a BorderLayout. The split pane is added to the CENTER which means it gets all the space available to the BorderLayout.

In the second case you add the split pane to the panel which uses a FlowLayout by default. In this case the FlowLayout uses the preferred size of the the split pane. Since you haven't added any components to the split pane or set its preferred size you get the results you see. Try setting the preferred size.

Read Lesson: Laying Out Components Within a Container (The Java™ Tutorials > Creating a GUI With JFC/Swing) for more information.

Hello camickr,
What preferred size should i use, Please reply with a code snippet.
Thank you

Please do us all a favor and avoid use of non-standard abbreviations in your posts here. For many here, English is not their primary language, and also since clarity of communication is paramount if you want to make it easy for others to help you, you really don't want to make others struggle to understand you.

Code:

---

JSplitPane jp;
JPanel jpa;
splitpanedemo(){
JFrame jf=new JFrame("demo");
jpa=new JPanel();
jp=new JSplitPane();
jf.show();
jf.setVisible(true);
jpa.add(jp);
jf.add(jpa);
jf.setSize(1500,1500);

---

This is what you did.

Quote:

---

this won't work well, the output differs,
the divider won't work well,

---

output does differ, you made frame visible first and then added JSplitpane later. Not good idea, add everything first then show frame at the last and yeah use frame.pack().

-Regards