JTree TreePath casting problem
- by newbie123
I got this casting problem java.lang.String cannot be cast to java.io.File, when I trying to do this
TreePath p = new TreePath(new Object[] {"src","file","My Diary" });
This is my jtree file model
class FileTreeModel implements TreeModel {
private FileNode root;
public FileTreeModel(String directory) {
root = new FileNode(directory);
}
public Object getRoot() {
return root;
}
public Object getChild(Object parent, int index) {
FileNode parentNode = (FileNode) parent;
return new FileNode(parentNode, parentNode.listFiles()[index].getName());
}
public int getChildCount(Object parent) {
FileNode parentNode = (FileNode) parent;
if (parent == null || !parentNode.isDirectory()
|| parentNode.listFiles() == null) {
return 0;
}
return parentNode.listFiles().length;
}
public boolean isLeaf(Object node) {
return (getChildCount(node) == 0);
}
public int getIndexOfChild(Object parent, Object child) {
FileNode parentNode = (FileNode) parent;
FileNode childNode = (FileNode) child;
return Arrays.asList(parentNode.list()).indexOf(childNode.getName());
}
public void valueForPathChanged(TreePath path, Object newValue) {
}
public void addTreeModelListener(TreeModelListener l) {
}
public void removeTreeModelListener(TreeModelListener l) {
}
}
class FileNode extends java.io.File {
public FileNode(String directory) {
super(directory);
}
public FileNode(FileNode parent, String child) {
super(parent, child);
}
@Override
public String toString() {
return getName();
}
}
