実は、問題はあなたが自分ので実装equals()している方法から来ていると思いますTreeNode。あなたの場合、 2つTreeNodeのが同じビジュアルノードを表す場合、それらは等しいと見なされます。2つTreeNodeは同じモデルオブジェクト（たとえば、モデルオブジェクトB）を表すことができますが、異なるノードのままです。
これは、DefaultMutableTreeNodeに基づく簡単なデモです（デフォルトの実装equals()を使用します）。2秒ごとに、選択をノードB1からB2に切り替えます。Object.equals(Object)==
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.ToolTipManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
public class TestTreeNodes {
public static class SomeModelNode {
private String value;
public SomeModelNode(String value) {
super();
this.value = value;
}
public String getValue() {
return value;
}
}
public class MyTreeCellRenderer extends DefaultTreeCellRenderer {
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row,
boolean hasFocus) {
Component cell = super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
if (value instanceof DefaultMutableTreeNode) {
DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode) value;
if (treeNode.getUserObject() instanceof SomeModelNode) {
setText(((SomeModelNode) treeNode.getUserObject()).getValue());
}
}
return cell;
}
}
private JFrame f;
private JTree tree;
private DefaultMutableTreeNode nodeA;
private DefaultMutableTreeNode nodeB1;
private DefaultMutableTreeNode nodeB2;
private DefaultMutableTreeNode nodeC;
private DefaultMutableTreeNode nodeD;
private DefaultMutableTreeNode nodeE;
private DefaultMutableTreeNode nodeF;
private DefaultMutableTreeNode nodeH;
private DefaultMutableTreeNode nodeK;
private boolean showingB1 = false;
protected void initUI() {
tree = new JTree(getModel());
for (int i = 0; i < tree.getRowCount(); i++) {
tree.expandRow(i);
}
ToolTipManager.sharedInstance().registerComponent(tree);
tree.setCellRenderer(new MyTreeCellRenderer());
f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLocationRelativeTo(null);
f.add(new JScrollPane(tree));
f.pack();
f.setVisible(true);
Timer t = new Timer(2000, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!showingB1) {
tree.getSelectionModel().setSelectionPath(getPathForNode(nodeB1));
} else {
tree.getSelectionModel().setSelectionPath(getPathForNode(nodeB2));
}
showingB1 = !showingB1;
}
});
t.start();
}
private TreePath getPathForNode(TreeNode node) {
List<TreeNode> nodes = new ArrayList<TreeNode>();
TreeNode current = node;
while (current != null) {
nodes.add(current);
current = current.getParent();
}
Collections.reverse(nodes);
return new TreePath(nodes.toArray(new Object[nodes.size()]));
}
private TreeModel getModel() {
SomeModelNode a = new SomeModelNode("A");
SomeModelNode b = new SomeModelNode("B");
SomeModelNode c = new SomeModelNode("C");
SomeModelNode d = new SomeModelNode("D");
SomeModelNode e = new SomeModelNode("E");
SomeModelNode f = new SomeModelNode("F");
SomeModelNode h = new SomeModelNode("H");
SomeModelNode k = new SomeModelNode("K");
nodeA = new DefaultMutableTreeNode(a);
nodeB1 = new DefaultMutableTreeNode(b);
nodeB2 = new DefaultMutableTreeNode(b);
nodeC = new DefaultMutableTreeNode(c);
nodeD = new DefaultMutableTreeNode(d);
nodeE = new DefaultMutableTreeNode(e);
nodeF = new DefaultMutableTreeNode(f);
nodeH = new DefaultMutableTreeNode(h);
nodeK = new DefaultMutableTreeNode(k);
// Children of A
nodeA.add(nodeB1);
nodeA.add(nodeB2);
nodeA.add(nodeH);
nodeA.add(nodeK);
// Children of B1
nodeB1.add(nodeC);
nodeB1.add(nodeD);
// Children of B2
nodeB2.add(nodeE);
nodeB2.add(nodeF);
DefaultTreeModel model = new DefaultTreeModel(nodeA);
return model;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestTreeNodes().initUI();
}
});
}
}