how to add Jtree object in JInternal frame?

[krishna balaji]

i tired this following code but the tree is not visible on the internal frame

top =new DefaultMutableTreeNode(f.getName());
classnode =new DefaultMutableTreeNode("Class");
interfacenode =new DefaultMutableTreeNode("Interface");
JARnode =new DefaultMutableTreeNode("JAR");
imagenode =new DefaultMutableTreeNode("Image");
dbnode =new DefaultMutableTreeNode("DataBase");
top.add(classnode);
top.add(interfacenode);
top.add(JARnode);
top.add(imagenode);
top.add(dbnode);
tree = new JTree(top);
treeView = new JScrollPane(tree);
treeView.setBounds(0,0,200,200);
treeView.setVisible(true);
PanelResourceWindow.add(tree,null);

[Rob Spoor]

tree = new JTree(top);
treeView = new JScrollPane(tree);
treeView.setBounds(0,0,200,200);
treeView.setVisible(true);
PanelResourceWindow.add(tree,null);

Try changing this into the following:

tree = new JTree(top);
treeView = new JScrollPane(tree);
PanelResourceWindow.add(treeView, null);

The tree already had a parent, the scroll pane's view port (which has the scroll pane as its parent). When you try to add it to a new parent, things go wrong.
Instead of adding the tree itself again, you should add the scroll pane, which contains the tree.

You should also ignore the bounds and visibility. The parent panel (PanelResourceWindow) will take care of the bounds of the scroll pane through its layout manager. The visibility will be set as the parent PanelResourceWindow becomes visible or invisible.