需要有人帮助。如何使用循环将字符串数组放入JTree嵌套节点中?例如,如果我有字符串名称[] = {“ A”,“ B”,“ C”,“ D”},则JTree结果将是节点C内的D子,B内的C以及A内的B。
- A
- B
- C
- D
需要有人帮助。如何使用循环将字符串数组放入JTree嵌套节点中?例如,如果我具有字符串名称[] = {“ A”,“ B”,“ C”,“ D”},则JTree结果将是节点内的D子代...
public static <T> DefaultMutableTreeNode treeify(List<T> values) {
DefaultMutableTreeNode root = null;
DefaultMutableTreeNode subRoot = null;
for (T value : values) {
if (root == null) {
root = new DefaultMutableTreeNode(value);
} else if (subRoot == null){
subRoot = new DefaultMutableTreeNode(value);
root.add(subRoot);
} else {
DefaultMutableTreeNode child = new DefaultMutableTreeNode(value);
subRoot.add(child);
subRoot = child;
}
}
return root;
}
public static void main(String [] args) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
JTree tree = new JTree(treeify(Arrays.asList("A", "B", "C", "D", "E")));
frame.add(new JScrollPane(tree));
frame.setSize(150, 300);
frame.setVisible(true);
}