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JTree erstellen
package com.sowas.snippets; import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class TreeDemo extends JFrame{ public TreeDemo(){ setLayout(new BorderLayout()); DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Knoten"); node.add(new DefaultMutableTreeNode("Blatt 1")); node.add(new DefaultMutableTreeNode("Blatt 2")); root.add(node); JTree tree = new JTree(root); add(new JScrollPane(tree), BorderLayout.CENTER); } public static void main(String[] args){ JFrame frame = new TreeDemo(); frame.setVisible(true); } }