Question

Here is my JTree

javax.swing.tree.DefaultMutableTreeNode treeNode1 = new javax.swing.tree.DefaultMutableTreeNode(".Net Framework");
javax.swing.tree.DefaultMutableTreeNode treeNode2 = new javax.swing.tree.DefaultMutableTreeNode("Install");
javax.swing.tree.DefaultMutableTreeNode treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V1");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V2");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V3");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V4");
treeNode2.add(treeNode3);
treeNode1.add(treeNode2);

treeNode2 = new javax.swing.tree.DefaultMutableTreeNode("Repair");
treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V1");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V2");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V3");
treeNode2.add(treeNode3);

treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("V4");
treeNode2.add(treeNode3);
treeNode1.add(treeNode2);

treeNode2 = new javax.swing.tree.DefaultMutableTreeNode("Removal");
treeNode3 = new javax.swing.tree.DefaultMutableTreeNode("Remove All");
treeNode2.add(treeNode3);
treeNode1.add(treeNode2);

jTree2.setModel(new javax.swing.tree.DefaultTreeModel(treeNode1));
jScrollPane5.setViewportView(jTree2);

here is the code that almost works

DefaultMutableTreeNode node = (DefaultMutableTreeNode) jTree2.getLastSelectedPathComponent();

if (node == null) {
      //Nothing is selected.     
    return;
}

if (node.isLeaf()) {
    System.out.println(node);
} 

I want to be able to make if statements that say if leaf node V1 in the Install Node, then do this. Just not sure what to do with if(node.equals(thisleaf))), what the thisleaf object should be equal to.

Answer 1

Declare a field

private DefaultMutableTreeNode v1Node;

Change the third line to

this.v1Node = new DefaultMutableTreeNode("V1");

and use

if (node.equals(this.v1Node))

Side note: you should import javax.swing.tree.DefaultMutableTreeNode and make your code more readable by simply using DefaultMutableTreeNode instead of the fully qualified name. You should also choose meaningful variable names instead of treeNode1, jTree2, etc. Such bad names make the code very hard to understand.