jtree java
Asignar DefaultMutableTreeNode a JTree (2)
El siguiente ejemplo te ayudará a hacerlo
package commondemo;
/**
*
* @author hemant
*/
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
public class SimpleTree extends JFrame {
public static void main(String[] args) {
new SimpleTree();
}
public SimpleTree() {
super("Creating a Simple JTree");
Container content = getContentPane();
Object[] hierarchy =
{ "javax.swing",
"javax.swing.border",
"javax.swing.colorchooser",
"javax.swing.event",
"javax.swing.filechooser",
new Object[] { "javax.swing.plaf",
"javax.swing.plaf.basic",
"javax.swing.plaf.metal",
"javax.swing.plaf.multi" },
"javax.swing.table",
new Object[] { "javax.swing.text",
new Object[] { "javax.swing.text.html",
"javax.swing.text.html.parser" },
"javax.swing.text.rtf" },
"javax.swing.tree",
"javax.swing.undo" };
DefaultMutableTreeNode root = processHierarchy(hierarchy);
JTree tree = new JTree(root);
content.add(new JScrollPane(tree), BorderLayout.CENTER);
setSize(275, 300);
setVisible(true);
}
/** Small routine that will make node out of the first entry
* in the array, then make nodes out of subsequent entries
* and make them child nodes of the first one. The process is
* repeated recursively for entries that are arrays.
*/
private DefaultMutableTreeNode processHierarchy(Object[] hierarchy) {
DefaultMutableTreeNode node =
new DefaultMutableTreeNode(hierarchy[0]);
DefaultMutableTreeNode child;
for(int i=1; i<hierarchy.length; i++) {
Object nodeSpecifier = hierarchy[i];
if (nodeSpecifier instanceof Object[]) // Ie node with children
child = processHierarchy((Object[])nodeSpecifier);
else
child = new DefaultMutableTreeNode(nodeSpecifier); // Ie Leaf
node.add(child);
}
return(node);
}
}
Estoy desarrollando una pequeña aplicación de escritorio en Netbeans. Arrastro y JTree un JTree en mi JFrame y ahora quiero llenar dinámicamente la jerarquía de nodo de este JTree . Para esto obtuve un método que me DefaultMutableTreeNode objeto DefaultMutableTreeNode . Ahora, ¿cómo asigno este objeto al JTree que arrastro y coloco