How to dynamically generate text or all component areas?

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  ujwala1234 wrote:

  How to create dynamic columns in classic reports.

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  Oracle DB: 11 gR 2
  Oracle Client: 11.2.0.3.0 (ODP.NET)
  Oracle Developer Tools for Visual Studio
  VS 2010 (C#)
  
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  I am new to the JAVA swing development.
  
  I am creating an application where in the pane on the left, there is a tree Menu and in the right pane, I have a few buttons. In view of the options in the left pane, I should be able to add more buttons and or the text to the right pane.
  
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  Thanks in advance.
  user2325986

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  Here is a working example of what you had:

  import javax.swing.*;
  import javax.swing.event.*;
  import java.awt.*;
  import javax.swing.tree.*;
  
  public class Main
  {
      public static void main(String[] args)
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          main_Frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          main_Frame.setVisible(true);
      }
  
      public static TestFrame main_Frame = new TestFrame();
  }
  
  class TestFrame extends JFrame
  {
      public TestFrame()
      {
          setTitle("Test Frame");
          setSize(500, 500);
          setLayout(new GridBagLayout());
  
          leftGBC = new GridBagConstraints();
          leftGBC.gridx = 0;
          leftGBC.gridy = 0;
          leftGBC.fill = leftGBC.BOTH;
          leftGBC.weightx = 10;
          leftGBC.weighty = 100;
  
          rightGBC = new GridBagConstraints();
          rightGBC.gridx = 1;
          rightGBC.gridy = 0;
          rightGBC.fill = rightGBC.BOTH;
          rightGBC.weightx = 100;
          rightGBC.weighty = 100;
  
          leftPanel = new JPanel();
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          leftPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
  
          rightPanel = new JPanel();
          rightPane = new JScrollPane(rightPanel);
          rightPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
          rightPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
  
          DefaultMutableTreeNode root = new DefaultMutableTreeNode("main_Tree");
          DefaultMutableTreeNode Branch1 = new DefaultMutableTreeNode("Branch1");
          DefaultMutableTreeNode Leaf1 = new DefaultMutableTreeNode("Leaf1");
          root.add(Branch1);
          Branch1.add(Leaf1);
          DefaultMutableTreeNode Branch2 = new DefaultMutableTreeNode("Branch2");
          DefaultMutableTreeNode Leaf2 = new DefaultMutableTreeNode("Leaf2");
          root.add(Branch2);
          Branch2.add(Leaf2);
          JTree tree = new JTree(root);
          tree.setRootVisible(true);
          tree.setShowsRootHandles(true);
          tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
  
          tree.addTreeSelectionListener(new TreeSelectionListener()
          {
              public void valueChanged(TreeSelectionEvent se)
              {
                  JTree tree = (JTree) se.getSource();
                  DefaultMutableTreeNode node = (DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
                  if (node == null) return;
                  String nodeInfo = node.toString();
  
                  if (nodeInfo.equals("Leaf1"))
                  {
                      rightPanel = new JPanel();
                      rightPanel.add(label);
                      Main.main_Frame.remove(rightPane);
                      rightPane = new JScrollPane(rightPanel);
                      rightPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
                      rightPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
                      Main.main_Frame.add(rightPane, rightGBC);
                      Main.main_Frame.validate();
                      Main.main_Frame.repaint();
                  }
  
                  if (nodeInfo.equals("Leaf2"))
                  {
                      rightPanel = new JPanel();
                      rightPanel.add(Jbt2);
                      Main.main_Frame.remove(rightPane);
                      rightPane = new JScrollPane(rightPanel);
                      rightPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
                      rightPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
                      Main.main_Frame.add(rightPane, rightGBC);
                      Main.main_Frame.validate();
                      Main.main_Frame.repaint();
                  }
              }
          });
  
          DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();
          tree.setRowHeight(30);
  
          renderer.setLeafIcon(new ImageIcon("blue-ball.gif"));
          renderer.setOpenIcon(new ImageIcon("red-ball.gif"));
          renderer.setClosedIcon(new ImageIcon("yellow-ball.gif"));
          renderer.setFont(new Font("Monospaced",Font.BOLD|Font.ITALIC,15));
          renderer.setTextNonSelectionColor(Color.blue);
          renderer.setTextSelectionColor(Color.white);
          renderer.setBackgroundNonSelectionColor(Color.white);
          renderer.setBackgroundSelectionColor(Color.gray);
          renderer.setBorderSelectionColor(Color.lightGray);
  
          leftPanel.add(tree);
  
          add(leftPane, leftGBC);
          add(rightPane, rightGBC);
      }
  
      private JPanel leftPanel;
      private JPanel rightPanel;
      private JScrollPane leftPane;
      private JScrollPane rightPane;
      private GridBagConstraints leftGBC;
      private GridBagConstraints rightGBC;
  
      private JButton Jbt1 = new JButton("Button1");
      private JButton Jbt2 = new JButton("Button2");
  
      private JLabel label = new JLabel("Enter your message below");
      private JTextArea jta = new JTextArea(10,15);
  
      private JButton Jbt3 = new JButton("Button3");
      private JButton Jbt4 = new JButton("Button4");
  }
  

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