我正在实现TreeModel接口，并且已经实现了除valueForPathChanged.
就我而言，这些值不会以编程方式更改。
为什么 TreeModel 接口包含这个方法？它是否JTree在任何情况下都被使用，或者我可以安全地让它未实现？
参考代码，它有效。我只是关心valueForPathChangedJTree是否需要：
class ParamsTreeModel implements TreeModel {
private final TreeRoot root;
private final List<TreeModelListener> listeners = new ArrayList<TreeModelListener>();
ParamsTreeModel(TreeRoot root) {
this.root = root;
}
@Override
public void addTreeModelListener(TreeModelListener l) {
listeners.add(l);
}
@Override
public Object getChild(Object parent, int index) {
if(parent instanceof Param) return null;
if(structuredMap.containsKey(parent)) {
return structuredMap.get(parent).get(index);
}
// Root
return partNames.get(index);
}
@Override
public int getChildCount(Object parent) {
if(parent instanceof Param) return 0;
if(parent instanceof TreeRoot) return partNames.size();
return structuredMap.get(parent).size();
}
@Override
public int getIndexOfChild(Object parent, Object child) {
if(parent instanceof TreeRoot) return partNames.indexOf(child);
return structuredMap.get(parent).indexOf(child);
}
@Override
public Object getRoot() {
return root;
}
@Override
public boolean isLeaf(Object node) {
return (node instanceof Param);
}
@Override
public void removeTreeModelListener(TreeModelListener l) {
listeners.remove(l);
}
@Override
public void valueForPathChanged(TreePath path, Object newValue) {
// TODO Auto-generated method stub
}
}