java swing根据字符串搜索定位到JTree某一个节点上或JTable某一行上

有时需要根据字符串快速定位到结构树中界面的具体位置，下面在网上找到的一个例子，不错。拿来分享下。

效果图如下：

代码如下：

/******************************************************************************* * @project: JavaSE * @package: com.burns.swing * @file: T.java * @author: Administrator * @created: 2017-4-7 * @purpose: *  * @version: 1.0 *  * Revision History at the end of file. *  * Copyright 2017 AcconSys All rights reserved. ******************************************************************************/package com.burns.swing;import java.awt.BorderLayout;import java.awt.Rectangle;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.*;import javax.swing.table.DefaultTableModel;import javax.swing.table.TableModel;import javax.swing.tree.TreeModel;import javax.swing.tree.TreePath;/** * swing根据字符串定位 (1)定位到JTree某一个节点上。 (2)定位到JTable某一行上。 *  * @author WangJian *  */@SuppressWarnings("serial")public class FindInTableAndTree extends JFrame implements ActionListener {private JToolBar toolbar = new JToolBar();private JButton findInTableBtn = new JButton("Find in Table");private JButton findInTreeBtn = new JButton("Find in Tree");private JTable table = null;private JTree tree = null;private JScrollPane tableSp = new JScrollPane();private JScrollPane treeSp = new JScrollPane();private JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,tableSp, treeSp);public FindInTableAndTree() {super("FindInTableAndTree");table = new JTable(createTableModel());tree = new JTree();tableSp.setViewportView(table);treeSp.setViewportView(tree);toolbar.add(findInTableBtn);toolbar.add(findInTreeBtn);findInTableBtn.addActionListener(this);findInTreeBtn.addActionListener(this);getContentPane().add(splitPane, BorderLayout.CENTER);getContentPane().add(toolbar, BorderLayout.NORTH);}private TableModel createTableModel() {String[] columnNames = { "colors", "sports", "food" };String[][] data = { { "blue", "violet", "red", "yellow" },{ "basketball", "soccer", "football", "hockey" },{ "hot dogs", "pizza", "ravioli", "bananas" } };DefaultTableModel model = new DefaultTableModel(data, columnNames);return model;}public void actionPerformed(ActionEvent e) {String str = JOptionPane.showInputDialog(this, "Find:", "Find",JOptionPane.QUESTION_MESSAGE);if (str != null) {if (e.getSource() == findInTableBtn) {findInTable(str);} else {findInTree(str);}}}private void findInTree(String str) {Object root = tree.getModel().getRoot();TreePath treePath = new TreePath(root);treePath = findInPath(treePath, str);if (treePath != null) {tree.setSelectionPath(treePath);tree.scrollPathToVisible(treePath);}}private TreePath findInPath(TreePath treePath, String str) {Object object = treePath.getLastPathComponent();if (object == null) {return null;}String value = object.toString();if (str.equals(value)) {return treePath;} else {TreeModel model = tree.getModel();int n = model.getChildCount(object);for (int i = 0; i < n; i++) {Object child = model.getChild(object, i);TreePath path = treePath.pathByAddingChild(child);path = findInPath(path, str);if (path != null) {return path;}}return null;}}private void findInTable(String str) {int rowCount = table.getRowCount();int columnCount = table.getColumnCount();for (int i = 0; i < rowCount; i++) {for (int k = 0; k < columnCount; k++) {Object value = table.getValueAt(i, k);if (str.equals(value)) {table.getSelectionModel().setSelectionInterval(i, i);Rectangle cellRect = table.getCellRect(i, k, true);table.scrollRectToVisible(cellRect);return;}}}}public static void main(String[] args) {FindInTableAndTree f = new FindInTableAndTree();f.pack();f.setLocationRelativeTo(null);f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);f.setVisible(true);f.splitPane.setDividerLocation(0.5);}}/******************************************************************************* * <B>Revision History</B><BR> * [type 'revision' and press Alt + / to insert revision block]<BR> *  *  *  * Copyright 2017 AcconSys All rights reserved. ******************************************************************************/

原文链接：http://www.zuidaima.com/code/file/2664499515737088.htm?dir=/2664499515737088.java