首先来看一下展示界面，JTree的特点有：节点可拖拽，根据输入生成目录，右键有菜单，点击触发事件等

JTable的特点有：含有隐藏列，可以进行翻页，列中含有下载按钮等

在来看一下代码吧，基本代码由Eclipse上的WindowBuilder进行拖拽式产生的，所以看起来有点乱，不过没事

在使用WindoerBuilder的时候要画JTree和JTable，这两个有几个共同点，必须放到JScrollPanel中，因为这两个控件的内容会可能有很多。

package test;    import java.awt.BorderLayout;  import java.awt.Component;  import java.awt.EventQueue;  import java.awt.GridBagConstraints;  import java.awt.GridBagLayout;  import java.awt.Insets;  import java.awt.event.ActionEvent;  import java.awt.event.ActionListener;  import java.awt.event.MouseAdapter;  import java.awt.event.MouseEvent;  import java.util.List;    import javax.swing.AbstractAction;  import javax.swing.DefaultCellEditor;  import javax.swing.JButton;  import javax.swing.JFrame;  import javax.swing.JLabel;  import javax.swing.JPanel;  import javax.swing.JPopupMenu;  import javax.swing.JScrollPane;  import javax.swing.JTabbedPane;  import javax.swing.JTable;  import javax.swing.JTextField;  import javax.swing.JTree;  import javax.swing.border.EmptyBorder;  import javax.swing.table.AbstractTableModel;  import javax.swing.table.TableCellRenderer;  import javax.swing.tree.DefaultMutableTreeNode;    import com.car.client.controller.DocsTreeTransferHanlder;  import com.car.cs.pojodata.VEachDir;  import com.car.cs.pojodata.VEachFile;  import com.car.rmi.client.DocsMgtRmi;    public class InnerDocsMgt extends JFrame {     /**    *     */   private static final long serialVersionUID = 1L;   private JPanel contentPane;   private JTable table;   private JTree tree;   private JLabel currentDirLabel;   private JLabel totalFilesNumLabel;   private List<VEachFile> docFils;   private final int maxFilesAPage = 50;   private JLabel curPageLabel;   private int curPageNum = 0;     /**    * Launch the application.    */   public static void main(String[] args) {    EventQueue.invokeLater(new Runnable() {     public void run() {      try {       InnerDocsMgt frame = new InnerDocsMgt();       frame.setVisible(true);      } catch (Exception e) {       e.printStackTrace();      }     }    });   }     /**    * Create the frame.    */   public InnerDocsMgt() {    setTitle("\u5185\u90E8\u8D44\u6599\u7BA1\u7406");    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    setBounds(100, 100, 450, 300);    this.setSize(800, 600);    contentPane = new JPanel();    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));    contentPane.setLayout(new BorderLayout(0, 0));    setContentPane(contentPane);      JPanel panel = new JPanel();    contentPane.add(panel, BorderLayout.WEST);    GridBagLayout gbl_panel = new GridBagLayout();    gbl_panel.columnWidths = new int[] { 54, 0, 0, 0, 0, 0, 0, 0 };    gbl_panel.rowHeights = new int[] { 31, 0, 0 };    gbl_panel.columnWeights = new double[] { 1.0, 0.0, 0.0, 0.0, 0.0, 0.0,      0.0, Double.MIN_VALUE };    gbl_panel.rowWeights = new double[] { 0.0, 1.0, Double.MIN_VALUE };    panel.setLayout(gbl_panel);      JLabel lblNewLabel = new JLabel(      "\u5185\u90E8\u8D44\u6599\u76EE\u5F55\u5217\u8868");    GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();    gbc_lblNewLabel.gridwidth = 5;    gbc_lblNewLabel.insets = new Insets(0, 0, 5, 5);    gbc_lblNewLabel.gridx = 0;    gbc_lblNewLabel.gridy = 0;    panel.add(lblNewLabel, gbc_lblNewLabel);      JButton button_4 = new JButton("\u4FDD\u5B58\u76EE\u5F55\u64CD\u4F5C");    GridBagConstraints gbc_button_4 = new GridBagConstraints();    gbc_button_4.insets = new Insets(0, 0, 5, 5);    gbc_button_4.gridx = 5;    gbc_button_4.gridy = 0;    panel.add(button_4, gbc_button_4);      JScrollPane scrollPane = new JScrollPane();    GridBagConstraints gbc_scrollPane = new GridBagConstraints();    gbc_scrollPane.gridwidth = 7;    gbc_scrollPane.fill = GridBagConstraints.BOTH;    gbc_scrollPane.gridx = 0;    gbc_scrollPane.gridy = 1;    panel.add(scrollPane, gbc_scrollPane);      DefaultMutableTreeNode top = new DefaultMutableTreeNode("/");    createNodes(top);    tree = new JTree(top);    scrollPane.setViewportView(tree);    tree.setEditable(true);    tree.setDragEnabled(true);    this.setPopupMenu();    try {     tree.setTransferHandler(new DocsTreeTransferHanlder());    } catch (ClassNotFoundException e) {     e.printStackTrace();    }      JPanel panel_1 = new JPanel();    contentPane.add(panel_1, BorderLayout.CENTER);    GridBagLayout gbl_panel_1 = new GridBagLayout();    gbl_panel_1.columnWidths = new int[] { 708, 0 };    gbl_panel_1.rowHeights = new int[] { 556, 0 };    gbl_panel_1.columnWeights = new double[] { 1.0, Double.MIN_VALUE };    gbl_panel_1.rowWeights = new double[] { 1.0, Double.MIN_VALUE };    panel_1.setLayout(gbl_panel_1);      JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);    GridBagConstraints gbc_tabbedPane = new GridBagConstraints();    gbc_tabbedPane.fill = GridBagConstraints.BOTH;    gbc_tabbedPane.gridx = 0;    gbc_tabbedPane.gridy = 0;    panel_1.add(tabbedPane, gbc_tabbedPane);      JPanel panel_2 = new JPanel();    tabbedPane.addTab("\u6587\u4EF6\u4E0E\u76EE\u5F55\u7BA1\u7406", null,      panel_2, null);    GridBagLayout gbl_panel_2 = new GridBagLayout();    gbl_panel_2.columnWidths = new int[] { 166, 59, 0, 0, 0, 0, 0 };    gbl_panel_2.rowHeights = new int[] { 30, 0, 49, 0, 0, 0 };    gbl_panel_2.columnWeights = new double[] { 1.0, 0.0, 0.0, 0.0, 0.0,      0.0, Double.MIN_VALUE };    gbl_panel_2.rowWeights = new double[] { 0.0, 0.0, 1.0, 0.0, 0.0,      Double.MIN_VALUE };    panel_2.setLayout(gbl_panel_2);      currentDirLabel = new JLabel(      "\u5F53\u524D\u76EE\u5F55\uFF1Aone->two->three");    GridBagConstraints gbc_lblonetwothree = new GridBagConstraints();    gbc_lblonetwothree.gridwidth = 6;    gbc_lblonetwothree.anchor = GridBagConstraints.WEST;    gbc_lblonetwothree.insets = new Insets(0, 0, 5, 0);    gbc_lblonetwothree.gridx = 0;    gbc_lblonetwothree.gridy = 0;    panel_2.add(currentDirLabel, gbc_lblonetwothree);      JButton button_3 = new JButton("\u5168\u9009/\u5168\u4E0D\u9009");    GridBagConstraints gbc_button_3 = new GridBagConstraints();    gbc_button_3.insets = new Insets(0, 0, 5, 5);    gbc_button_3.gridx = 3;    gbc_button_3.gridy = 1;    panel_2.add(button_3, gbc_button_3);      JButton button = new JButton("\u5220\u9664");    GridBagConstraints gbc_button = new GridBagConstraints();    gbc_button.insets = new Insets(0, 0, 5, 5);    gbc_button.gridx = 4;    gbc_button.gridy = 1;    panel_2.add(button, gbc_button);      JButton button_1 = new JButton("\u79FB\u52A8\u5230");    button_1.setToolTipText("\u8BF7\u5148\u9009\u62E9\u8981\u79FB\u52A8\u7684\u6587\u4EF6\uFF0C\u7136\u540E\u518D\u9009\u62E9\u4E00\u4E2A\u5DE6\u4FA7\u76EE\u5F55");    GridBagConstraints gbc_button_1 = new GridBagConstraints();    gbc_button_1.insets = new Insets(0, 0, 5, 0);    gbc_button_1.gridx = 5;    gbc_button_1.gridy = 1;    panel_2.add(button_1, gbc_button_1);      JScrollPane scrollPane_1 = new JScrollPane();    GridBagConstraints gbc_scrollPane_1 = new GridBagConstraints();    gbc_scrollPane_1.gridwidth = 6;    gbc_scrollPane_1.insets = new Insets(0, 0, 5, 0);    gbc_scrollPane_1.fill = GridBagConstraints.BOTH;    gbc_scrollPane_1.gridx = 0;    gbc_scrollPane_1.gridy = 2;    panel_2.add(scrollPane_1, gbc_scrollPane_1);      String[] headNames = new String[] { "\u9009\u62E9",      "\u6587\u4EF6\u540D", "\u5927\u5C0F\uFF08KB\uFF09",      "\u6587\u4EF6\u65E5\u671F", "\u4F5C\u8005", "", "\u4E0B\u8F7D" };    Object[][] tableDatas = new Object[][] {      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null },      { null, null, null, null, null, null, null }, };      table = new JTable(new DocsTableModel(headNames, tableDatas));      table.getColumnModel().getColumn(0)      .setCellEditor(table.getDefaultEditor(Boolean.class));    table.getColumnModel().getColumn(0)      .setCellRenderer(table.getDefaultRenderer(Boolean.class));      table.getColumnModel().getColumn(0).setPreferredWidth(38);    table.getColumnModel().getColumn(1).setPreferredWidth(206);    table.getColumnModel().getColumn(2).setPreferredWidth(53);    table.getColumnModel().getColumn(3).setPreferredWidth(134);    table.getColumnModel().getColumn(4).setPreferredWidth(58);      // hide the 5th column, it contans the filepath    table.getTableHeader().getColumnModel().getColumn(5).setMaxWidth(0);// hide    table.getTableHeader().getColumnModel().getColumn(5).setMinWidth(0);// hide    table.getTableHeader().getColumnModel().getColumn(5)      .setPreferredWidth(0);    table.getTableHeader().getColumnModel().getColumn(5).setWidth(0);      table.getColumnModel().getColumn(6)      .setCellRenderer(new ButtonCellRenderer());    table.getColumnModel().getColumn(6)      .setCellEditor(new ButtonCellEditor(table));      scrollPane_1.setViewportView(table);      totalFilesNumLabel = new JLabel("\u6587\u4EF6\u603B\u6570\uFF1A0");    GridBagConstraints gbc_totalFilesNumLabel = new GridBagConstraints();    gbc_totalFilesNumLabel.anchor = GridBagConstraints.WEST;    gbc_totalFilesNumLabel.insets = new Insets(0, 0, 0, 5);    gbc_totalFilesNumLabel.gridx = 0;    gbc_totalFilesNumLabel.gridy = 4;    panel_2.add(totalFilesNumLabel, gbc_totalFilesNumLabel);      curPageLabel = new JLabel(      "\u5F53\u524D\u9875\u6570\uFF1A0| \u603B\u9875\u6570\uFF1A0");    GridBagConstraints gbc_curPageLabel = new GridBagConstraints();    gbc_curPageLabel.gridwidth = 2;    gbc_curPageLabel.insets = new Insets(0, 0, 0, 5);    gbc_curPageLabel.gridx = 2;    gbc_curPageLabel.gridy = 4;    panel_2.add(curPageLabel, gbc_curPageLabel);      JButton btnNewButton = new JButton("\u4E0A\u4E00\u9875");    btnNewButton.addActionListener(new ActionListener() {     public void actionPerformed(ActionEvent e) {      prePage();     }    });    GridBagConstraints gbc_btnNewButton = new GridBagConstraints();    gbc_btnNewButton.insets = new Insets(0, 0, 0, 5);    gbc_btnNewButton.gridx = 4;    gbc_btnNewButton.gridy = 4;    panel_2.add(btnNewButton, gbc_btnNewButton);      JButton button_2 = new JButton("\u4E0B\u4E00\u9875");    button_2.addActionListener(new ActionListener() {     public void actionPerformed(ActionEvent e) {      nextPage();     }    });    GridBagConstraints gbc_button_2 = new GridBagConstraints();    gbc_button_2.gridx = 5;    gbc_button_2.gridy = 4;    panel_2.add(button_2, gbc_button_2);      JPanel panel_3 = new JPanel();    tabbedPane.addTab("\u7F16\u8F91\u6587\u6863", null, panel_3, null);    GridBagLayout gbl_panel_3 = new GridBagLayout();    gbl_panel_3.columnWidths = new int[] { 0 };    gbl_panel_3.rowHeights = new int[] { 0 };    gbl_panel_3.columnWeights = new double[] { Double.MIN_VALUE };    gbl_panel_3.rowWeights = new double[] { Double.MIN_VALUE };    panel_3.setLayout(gbl_panel_3);   }     private void createNodes(DefaultMutableTreeNode top) {      List<DefaultMutableTreeNode> nodes = DocsMgtRmi.getINS()      .getFirstLevelDirs();      for (DefaultMutableTreeNode one : nodes) {     top.add(one);    }     }     public void setPopupMenu() {    final JPopupMenu pop = new JPopupMenu();    pop.add(new AbstractAction("添加子目录") {     private static final long serialVersionUID = 1L;       public void actionPerformed(ActionEvent e) {      System.out.println("Tree Add");     }    });    pop.add(new AbstractAction("删除目录") {     private static final long serialVersionUID = 1L;       public void actionPerformed(ActionEvent e) {      System.out.println("Delete");     }    });      tree.addMouseListener(new MouseAdapter() {     @Override     public void mouseReleased(MouseEvent e) {      if (e.isMetaDown()) {       pop.show(tree, e.getX(), e.getY());      }     }       public void mouseClicked(MouseEvent evt) {      if (evt.getClickCount() == 1) {         VEachDir eDir = (VEachDir) getSelectedNode()         .getUserObject();       docFils = DocsMgtRmi.getINS().getFilesViaDirid(         eDir.getDirId());         int filesNum = docFils.size();       currentDirLabel         .setText("\u5F53\u524D\u76EE\u5F55\uFF1Aone->two->three,=>DirID:"           + eDir.getDirId());       totalFilesNumLabel.setText("\u6587\u4EF6\u603B\u6570\uFF1A"         + filesNum);         int maxNum = Math.min(maxFilesAPage, filesNum);       if (filesNum <= maxFilesAPage) {        curPageLabel          .setText("\u5F53\u524D\u9875\u6570\uFF1A 1 | \u603B\u9875\u6570\uFF1A 1");       } else {          int totalNum = filesNum / maxFilesAPage;        if (totalNum * maxFilesAPage < filesNum) {         totalNum++;        }        curPageLabel          .setText("\u5F53\u524D\u9875\u6570\uFF1A 1 | \u603B\u9875\u6570\uFF1A "            + totalNum);       }       curPageNum = 0;       setDocTableValues(docFils.subList(0, maxNum));      }     }    });   }     public void prePage() {      if (this.curPageNum <= 0) {     return;    }    int filesNum = docFils.size();    curPageNum--;      int totalPage = filesNum / maxFilesAPage;    if (totalPage * maxFilesAPage < filesNum) {     totalPage++;    }    curPageLabel      .setText("\u5F53\u524D\u9875\u6570\uFF1A " + (curPageNum + 1)        + " | \u603B\u9875\u6570\uFF1A " + totalPage);      setDocTableValues(docFils.subList(curPageNum * maxFilesAPage,      Math.min((curPageNum + 1) * maxFilesAPage, filesNum)));     }     public void nextPage() {      int filesNum = docFils.size();    int totalPage = filesNum / maxFilesAPage;    if (totalPage * maxFilesAPage < filesNum) {     totalPage++;    }      if (curPageNum >= totalPage - 1) {     return;    }    curPageNum++;    setDocTableValues(docFils.subList(curPageNum * maxFilesAPage,      Math.min((curPageNum + 1) * maxFilesAPage, filesNum)));    curPageLabel      .setText("\u5F53\u524D\u9875\u6570\uFF1A " + (curPageNum + 1)        + " | \u603B\u9875\u6570\uFF1A " + totalPage);   }     public void setDocTableValues(List<VEachFile> subDocs) {      int i = 0;    for (; i < subDocs.size(); i++) {     table.getModel().setValueAt(false, i, 0);     table.getModel().setValueAt(subDocs.get(i).getFileName(), i, 1);     table.getModel().setValueAt(subDocs.get(i).getFileSize(), i, 2);     table.getModel().setValueAt(       subDocs.get(i).getFileDate().toLocaleString(), i, 3);     table.getModel().setValueAt(subDocs.get(i).getFileAuthor(), i, 4);     table.getModel().setValueAt(subDocs.get(i).getFilePath(), i, 5);    }    if (subDocs.size() < maxFilesAPage) {     for (; i < maxFilesAPage; i++) {      table.getModel().setValueAt(false, i, 0);      table.getModel().setValueAt(null, i, 1);      table.getModel().setValueAt(null, i, 2);      table.getModel().setValueAt(null, i, 3);      table.getModel().setValueAt(null, i, 4);      table.getModel().setValueAt(null, i, 5);     }    }    table.updateUI();    table.repaint();   }     public DefaultMutableTreeNode getSelectedNode() {    return (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();   }     class DocsTableModel extends AbstractTableModel {    private String headName[];    private Object obj[][];    private Class[] columnTypes = new Class[] { Boolean.class,      Object.class, Object.class, Object.class, Object.class,      Object.class, Object.class };      public DocsTableModel() {     super();    }      public DocsTableModel(String[] headName, Object[][] obj) {     this();     this.headName = headName;     this.obj = obj;    }      public int getColumnCount() {     return headName.length;    }      public int getRowCount() {     return obj.length;    }      public Object getValueAt(int r, int c) {     return obj[r][c];    }      public String getColumnName(int c) {     return headName[c];    }      public Class<?> getColumnClass(int columnIndex) {     return columnTypes[columnIndex].getClass();    }      @Override    public boolean isCellEditable(int rowIndex, int columnIndex) {     return true;    }      public void setValueAt(Object value, int row, int col) {     obj[row][col] = value;     fireTableCellUpdated(row, col);    }   }  }    class ButtonCellEditor extends DefaultCellEditor {     private static final long serialVersionUID = -6546334664166791132L;   private JButton button;   private JTable table;     public ButtonCellEditor(JTable table) {    super(new JTextField());    this.setClickCountToStart(1);    this.initButton();    this.table = table;   }     private void initButton() {    this.button = new JButton();    this.button.setSize(50, 15);    this.button.addActionListener(new ActionListener() {     public void actionPerformed(ActionEvent e) {      ButtonCellEditor.this.fireEditingCanceled();      System.out.println("Selected Column:"        + table.getSelectedColumn()        + ",row:"        + table.getSelectedRow()        + ",and filePath:"        + table.getModel()          .getValueAt(table.getSelectedRow(), 5));     }    });   }     @Override   public Component getTableCellEditorComponent(JTable table, Object value,     boolean isSelected, int row, int column) {    this.button.setText("下载");    return this.button;   }     @Override   public Object getCellEditorValue() {    return this.button.getText();   }  }    class ButtonCellRenderer implements TableCellRenderer {   private JButton button;     public ButtonCellRenderer() {    this.button = new JButton();   }     public Component getTableCellRendererComponent(JTable table, Object value,     boolean isSelected, boolean hasFocus, int row, int column) {    this.button.setText("下载");    return this.button;   }    }

package test;    import java.net.MalformedURLException;  import java.util.ArrayList;  import java.util.Date;  import java.util.List;    import javax.swing.tree.DefaultMutableTreeNode;    import org.apache.log4j.Logger;    import com.car.cs.apis.RemindDao;  import com.car.cs.pojodata.VEachDir;  import com.car.cs.pojodata.VEachFile;  import com.car.rmi.server.RmiUtil;    public class DocsMgtRmi {     private final Logger logger = Logger.getLogger(DocsMgtRmi.class);     private RemindDao dao = null;   private static DocsMgtRmi rmi = null;     public static DocsMgtRmi getINS() {    if (rmi == null) {     synchronized (DocsMgtRmi.class) {      if (rmi == null) {       rmi = new DocsMgtRmi();      }     }    }    return rmi;   }     private DocsMgtRmi() {       }     public List<DefaultMutableTreeNode> getFirstLevelDirs() {      ArrayList<DefaultMutableTreeNode> nodes = new ArrayList<DefaultMutableTreeNode>();      DefaultMutableTreeNode fstnode = null;    for (int i = 0; i < 10; i++) {     VEachDir fstLevelDir = new VEachDir(i, "200" + i + "年以前规章", 0);     fstnode = new DefaultMutableTreeNode(fstLevelDir);     nodes.add(fstnode);    }      for (int i = 0; i < 10; i++) {     VEachDir secLevelDir = new VEachDir(i, "2009年投诉建议-卷" + i, 9);     DefaultMutableTreeNode secNode = new DefaultMutableTreeNode(       secLevelDir);     fstnode.add(secNode);    }      return nodes;   }     public List<VEachFile> getFilesViaDirid(int dirId) {      ArrayList<VEachFile> files = new ArrayList<VEachFile>();    for (int i = 0; i < 97; i++) {     VEachFile one = new VEachFile(dirId, "天上星，亮晶晶，那是" + i + "双双眼睛.txt",       1000, new Date(), "张为山", "one->two-" + i + "-<>");     files.add(one);    }    return files;     }     public boolean saveDirChanged(List<VEachDir> dirs) {      return true;   }    }