分享一个统计代码量的小程序

import java.awt.EventQueue;import java.awt.Font;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.IOException; import javax.swing.JButton;import javax.swing.JFileChooser;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTextField;import javax.swing.border.EmptyBorder; @SuppressWarnings("serial")public class CountRows extends JFrame {     private JPanel contentPane;    private JTextField absolutePath;     private int num; // 用来存储行数的    private String path;     /**     * Launch the application.     */    public static void main(String[] args) {        EventQueue.invokeLater(new Runnable() {            public void run() {                try {                    CountRows frame = new CountRows();                    frame.setVisible(true);                } catch (Exception e) {                    e.printStackTrace();                }            }        });    }     /**     * Create the frame.     */    public CountRows() {        setTitle("u7EDFu8BA1u4EE3u7801u884Cu6570");        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        setBounds(100, 100, 384, 185);        contentPane = new JPanel();        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));        setContentPane(contentPane);        contentPane.setLayout(null);         absolutePath = new JTextField();        absolutePath.setBounds(67, 39, 200, 31);        contentPane.add(absolutePath);        absolutePath.setColumns(10);         JLabel lblSrc = new JLabel("srcu8DEFu5F84");        lblSrc.setFont(new Font("宋体", Font.PLAIN, 15));        lblSrc.setBounds(10, 39, 64, 31);        contentPane.add(lblSrc);         JButton result = new JButton("u7EDFu8BA1u884Cu6570");        result.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent e) {                String path = absolutePath.getText();                File file = new File(path);                try {                    nums(file);                } catch (IOException e1) {                    e1.printStackTrace();                }                JOptionPane                        .showMessageDialog(contentPane, "代码一共有:" + num + "行");            }        });        result.setFont(new Font("宋体", Font.PLAIN, 14));        result.setBounds(48, 100, 93, 37);        contentPane.add(result);         JButton exit = new JButton("u9000u51FA");        exit.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent e) {                System.exit(1);            }        });        exit.setFont(new Font("宋体", Font.PLAIN, 14));        exit.setBounds(270, 100, 93, 37);        contentPane.add(exit);         JButton view = new JButton("u6D4Fu89C8");        view.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent e) {                JFileChooser jfc = new JFileChooser("c:\");                jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);                jfc.setDialogTitle("请选择要统计的src文件夹");                int result = jfc.showOpenDialog(contentPane);                if (result == JFileChooser.APPROVE_OPTION) {                    path = jfc.getSelectedFile().getAbsolutePath();                    absolutePath.setText(path);                }            }        });        view.setBounds(277, 36, 81, 37);        contentPane.add(view);     }     /**     * 写一个方法，用来计算代码量     *      * @throws IOException     */    private void nums(File file) throws IOException {         if (file.isDirectory()) {            File[] files = file.listFiles();            for (int i = 0; i < files.length; i++) {                File f = files[i];                nums(f);            }        } else {            BufferedReader br = new BufferedReader(new FileReader(file));            while (br.readLine() != null) {                num++;            }            br.close();        }    }}

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