I am trying to write a simple GUI that contains a directory tree, searchbar, and some other components. I have taken a course in Java programming, but not on Swing graphics programming. I get an error when I try to compile the line Container contentPane = getContentPane(); I think have imported the sufficient classes. The statement above produces a compiler error that says the line is depreciated. But I copied that line from another example in a book published in 2004. Any ideas? The entire code is below. import java.awt.*; import java.util.*; import javax.swing.*; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSplitPane; import javax.swing.UIManager; import javax.swing.JTree; import javax.swing.tree.*; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.TreeSelectionModel; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; public class GUI_Launch { public static void main(String[] args) { SimpleFrame frame = new SimpleFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.show(); SimpleTree addtree = new SimpleTree(); } } class SimpleFrame extends JFrame { public SimpleFrame() { setTitle("GUI Demo"); setSize(WIDTH, HEIGHT); } public static final int WIDTH = 300; public static final int HEIGHT = 200; } class SimpleTree { public SimpleTree() { DefaultMutableTreeNode top = new DefaultMutableTreeNode("The World"); CreateNodes(top); JTree tree = new JTree(top); tree.getSelectionModel().setSelectionMode (TreeSelectionModel.SINGLE_TREE_SELECTION); JScrollPane treeView = new JScrollPane(tree); Container contentPane = getContentPane(); contentPane.add(treeView); } private void CreateNodes(DefaultMutableTreeNode top) { DefaultMutableTreeNode state = null; DefaultMutableTreeNode city = null; state = new DefaultMutableTreeNode("Oregon"); city = new DefaultMutableTreeNode("Portland"); state.add(city); city = new DefaultMutableTreeNode("Bend"); state.add(city); city = new DefaultMutableTreeNode("Salem"); state.add(city); top.add(state); state = new DefaultMutableTreeNode("Washington"); city = new DefaultMutableTreeNode("Seattle"); state.add(city); top.add(state); state = new DefaultMutableTreeNode("New York"); city = new DefaultMutableTreeNode("New York"); state.add(city); top.add(state); } private JTree tree; private SimpleTree addtree; } Avoid Intel Celeron CPUs, buy an AMD instead. Avoid Nokia, go Motorola instead.

The following modified code will compile. I do not think it will do what you expect 'tho. import java.awt.*; import java.util.*; import javax.swing.*; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSplitPane; import javax.swing.UIManager; import javax.swing.JTree; import javax.swing.tree.*; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.TreeSelectionModel; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; public class GUI_Launch { public static void main(String[] args) { SimpleFrame frame = new SimpleFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.show(); SimpleTree addtree = new SimpleTree( frame ); } } class SimpleFrame extends JFrame { public SimpleFrame() { setTitle("GUI Demo"); setSize(WIDTH, HEIGHT); } public static final int WIDTH = 300; public static final int HEIGHT = 200; } class SimpleTree { public SimpleTree(JFrame mjf) { DefaultMutableTreeNode top = new DefaultMutableTreeNode("The World"); CreateNodes(top); JTree tree = new JTree(top); tree.getSelectionModel().setSelectionMode (TreeSelectionModel.SINGLE_TREE_SELECTION); JScrollPane treeView = new JScrollPane(tree); Container contentPane = mjf.getContentPane(); contentPane.add(treeView); } private void CreateNodes(DefaultMutableTreeNode top) { DefaultMutableTreeNode state = null; DefaultMutableTreeNode city = null; state = new DefaultMutableTreeNode("Oregon"); city = new DefaultMutableTreeNode("Portland"); state.add(city); city = new DefaultMutableTreeNode("Bend"); state.add(city); city = new DefaultMutableTreeNode("Salem"); state.add(city); top.add(state); state = new DefaultMutableTreeNode("Washington"); city = new DefaultMutableTreeNode("Seattle"); state.add(city); top.add(state); state = new DefaultMutableTreeNode("New York"); city = new DefaultMutableTreeNode("New York"); state.add(city); top.add(state); } private JTree tree; private SimpleTree addtree; }