日期:2014-05-16 浏览次数:20394 次
范例1
import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; import javax.swing.JTree; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; public class JTreeTest extends JFrame { private JSplitPane split = new JSplitPane(); private JTree tree = new JTree(); private JLabel label = new JLabel(); public JTreeTest() { this.getContentPane().add(this.split); this.split.setLeftComponent(this.tree); this.tree.addTreeSelectionListener(new TreeSelectionListener() { public void valueChanged(TreeSelectionEvent e) { label.setText(tree.getSelectionPath().getLastPathComponent().toString()); } }); this.split.setRightComponent(this.label); } /** * @param args */ public static void main(String[] args) { JTreeTest jt = new JTreeTest(); jt.setVisible(true); jt.setSize(300, 200); jt.setDefaultCloseOperation(EXIT_ON_CLOSE); } }
范例2:
package com.boomlink.report.gui.chart.treetest.jsplitpane;
import javax.swing.*; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener;
public class TestJTree {
?/** ? * @param args ? */ ?public static void main(String[] args) { ??JFrame fr = new JFrame(); ??fr.setSize(300, 500); ??fr.setDefaultCloseOperation(3); ??JSplitPane jp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT); ??fr.getContentPane().add(jp); ??JTree jt = new JTree(); ??jp.add(jt, JSplitPane.LEFT, 0); ??JTextArea ja = new JTextArea(); ??jp.add(ja, JSplitPane.RIGHT, 1); ??// fr.getContentPane().add(jt); ??fr.setVisible(true); ??jt.addTreeSelectionListener(new MyTreeSelectionListener(ja, jt)); ?}
}
class MyTreeSelectionListener implements TreeSelectionListener { ?JTextArea ja; ?JTree jt;
?public MyTreeSelectionListener(JTextArea ja, JTree jt) { ??this.ja = ja; ??this.jt = jt; ?}
?public void valueChanged(TreeSelectionEvent e) { ??ja.setText(jt.getSelectionPath().getLastPathComponent().toString());
?}
}