From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../hjp5/examples/Listing3812.java                 | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/Listing3812.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/Listing3812.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing3812.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing3812.java
new file mode 100644
index 0000000..69aff2c
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing3812.java	
@@ -0,0 +1,64 @@
+/* Listing3812.java */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.event.*;
+import javax.swing.tree.*;
+
+public class Listing3812
+extends JFrame
+{
+  public Listing3812()
+  {
+    super("JTree 2");
+    addWindowListener(new WindowClosingAdapter(true));
+    //Einfaches TreeModel bauen
+    DefaultMutableTreeNode root, child, subchild;
+    root = new DefaultMutableTreeNode("Root");
+    for (int i = 1; i <= 5; ++i) {
+      String name = "Child-" + i;
+      child = new DefaultMutableTreeNode(name);
+      root.add(child);
+      for (int j = 1; j <= 3; ++j) {
+        subchild = new DefaultMutableTreeNode(name + "-" + j);
+        child.add(subchild);
+      }
+    }
+    //JTree erzeugen und Einfachselektion aktivieren
+    JTree tree = new JTree(root);
+    TreeSelectionModel tsm = new DefaultTreeSelectionModel();
+    tsm.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
+    tree.setSelectionModel(tsm);
+    tree.setRootVisible(true);
+    //JTree einfügen
+    Container cp = getContentPane();
+    cp.add(new JScrollPane(tree), BorderLayout.CENTER);
+    //TreeSelectionListener hinzufügen
+    tree.addTreeSelectionListener(
+      new TreeSelectionListener()
+      {
+        public void valueChanged(TreeSelectionEvent event)
+        {
+          TreePath tp = event.getNewLeadSelectionPath();
+          if (tp != null) {
+            System.out.println("  Selektiert: " + tp.toString());
+          } else {
+            System.out.println("  Kein Element selektiert");
+          }
+        }
+      }
+    );
+  }
+
+  public static void main(String[] args)
+  {
+    try {
+      Listing3812 frame = new Listing3812();
+      frame.setLocation(100, 100);
+      frame.setSize(250, 200);
+      frame.setVisible(true);
+    } catch (Exception e) {
+    }
+  }
+}
\ No newline at end of file
-- 
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