如何去掉指定Jtable某一列的焦点?

Question

如何去掉指定Jtable某一列的焦点?
比如我用TAB切换焦点的时候，遇到某一列的时候，将焦点跳到下一个cell中？

Answer 1

我能想到的办法
为列执行获得焦点的事件处理，好像是 addListSelectionListener一旦发现不是你要的列，比如不能编辑的列，切换到下一个列

Answer 2

举个例子，假设跳过第二列    private JTable getJTable() {
        if (jTable == null) {
            jTable = new JTable(); //......             InputMap im = jTable.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);            KeyStroke tab = KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0);            final Action oldTabAction = jTable.getActionMap().get(im.get(tab));
            Action tabAction = new AbstractAction() {
                private static final long serialVersionUID = 1L;                public void actionPerformed(ActionEvent e) {
                    oldTabAction.actionPerformed(e);
                    JTable table = (JTable) e.getSource();
                    int rowCount = table.getRowCount();
                    int row = table.getSelectedRow();                    if (column == 2) {// 如果移动到了第二列，则跳到下一列
                        column += 1;
                    } 
                    table.changeSelection(row, column, false, false);
                }
            };
            jTable.getActionMap().put(im.get(tab), tabAction); //......        }
        return jTable;
    }

Answer 3

不好意思，没测试，代码有点错误，将                    int rowCount = table.getRowCount();改成                    int column = table.getSelectedColumn();

Answer 4

package com.ebis.util;
import javax.swing.JTable;
import javax.swing.table.TableModel;
import javax.swing.table.TableColumnModel;
import javax.swing.ListSelectionModel;
import java.util.Vector;
import java.awt.event.KeyEvent;
import javax.swing.KeyStroke;
import javax.swing.DefaultCellEditor;
import javax.swing.JTextField;
import javax.swing.JComboBox;
/**
* <p>Title: 医院端医保结算系统</p>
* <p>Description: 主类</p>
* <p>Copyright: Copyright (c) 2001</p>
* <p>Company: ebis</p>
* @author not attributable
* @version 1.0
*/
public class VTable
    extends JTable {
  private boolean[] cellLock;
  public VTable() {
  }
  public VTable(TableModel p0) {
    super(p0);
  }
  public VTable(TableModel p0, TableColumnModel p1) {
    super(p0, p1);
  }
  public VTable(TableModel p0, TableColumnModel p1, ListSelectionModel p2) {
    super(p0, p1, p2);
  }
  public VTable(int p0, int p1) {
    super(p0, p1);
  }
  public VTable(Vector p0, Vector p1) {
    super(p0, p1);
  }
  public VTable(Object[][] p0, Object[] p1) {
    super(p0, p1);
  }
  public static void main(String[] args) {
    VTable VTable1 = new VTable();
  }
  public void selectCell(int row, int col) {
    this.setRowSelectionInterval(row, row);
    this.setColumnSelectionInterval(col, col);
  }
  public void setFocusMoveHorizontal(boolean flag) {
    if (flag) {
      this.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).
          put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0),
              "selectNextColumnCell");
    }
    else {
      this.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).
          put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "");
    }
  }
  public boolean isCellEditable(int row, int col) {
    return this.cellLock[col];
  }
  //规定那几列不可以编辑
  public void setCellLock(boolean[] cellLock) {
    this.cellLock = cellLock;
  }
  //编辑单元
  public void editCell(int row,int col){
    this.editCellAt(row, col);
    Object o=((DefaultCellEditor) this.getCellEditor(row, col)).getComponent();
    if(o instanceof JTextField){
      JTextField jText = (JTextField)o;
      jText.requestFocus();
      jText.selectAll();
    }else{
      JComboBox c=(JComboBox)o;
      c.requestFocus();
    }
  }
  //设置列宽，先有内容后在设置宽度
  public void setColumnWidth(int[] widths)throws Exception{
    if(this.getColumnModel().getColumnCount()!=widths.length)throw new Exception("表格列数与参数(宽度)列数不对");
    this.setAutoResizeMode(this.AUTO_RESIZE_OFF);
    for(int i=0;i<widths.length;i++){
      this.getColumnModel().getColumn(i).setPreferredWidth(widths[i]);
    }
  }
} 

Answer 5

package com.ebis.util;
import javax.swing.*;
import javax.swing.table.JTableHeader;
import java.awt.*;
import javax.swing.table.DefaultTableModel;
import java.awt.event.FocusListener;
import java.awt.event.FocusEvent;
import java.awt.event.KeyListener;
import java.util.EventListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
/**
* <p>Title: 医院端医保结算系统</p>
* <p>Description: 测试类</p>
* <p>Copyright: Copyright (c) 2001</p>
* <p>Company: ebis</p>
* @author not attributable
* @version 1.0
*/
public class Test
    extends JFrame {
  JScrollPane jScrollPane1 = new JScrollPane();
  VTable jTable1 = new VTable();
  JComboBox c = new JComboBox();
  public static void main(String[] args) {
    Test t = new Test();
  }
  public Test() {
    try {
      jbInit();
      this.setBounds(100, 100, 400, 400);
      this.setVisible(true);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
  private void jbInit() throws Exception {
    this.getContentPane().setLayout(null);
    jScrollPane1.setBounds(new Rectangle(34, 33, 336, 236));
    jTable1.setRowSelectionAllowed(false);
    this.getContentPane().add(jScrollPane1, null);
    jScrollPane1.getViewport().add(jTable1, null);
    c.addItem("你");
    c.addItem("我");
    c.addItem("他");
    String[] title = new String[] {
        "a", "b", "c"};
    String[][] data = new String[][] {
        {
        "1", "你", "3"}
        , {
        "1", "我", "3"}
        , {
        "1", "他", "3"}
        , {
        "1", "他", "3"}
        , {
        "1", "他", "3"}
    };
    DefaultTableModel dtm = new DefaultTableModel(data, title);
    jTable1.setFocusMoveHorizontal(false);
    jTable1.setModel(dtm);
    jTable1.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(c));
    jTable1.selectCell(0, 0);
    jTable1.setRowHeight(25);
    jTable1.setColumnWidth(new int[]{100,100,100});    jTable1.setCellLock(new boolean[] {false, true, true});
    jTable1.addFocusListener(new FocusListener() {
      public void focusGained(FocusEvent focusEvent) {
        VTable table = (VTable) focusEvent.getSource();
        System.out.println("row:" + table.getSelectedRow());
        System.out.println("col:" + table.getSelectedColumn());
        System.out.println("-----------");
      }
      public void focusLost(FocusEvent focusEvent) {
      }
    });
    jTable1.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        VTable table = (VTable) e.getSource();
        int row = table.getSelectedRow();
        int col = table.getSelectedColumn();
        int colCount = table.getColumnCount();
        int rowCount = table.getRowCount();
        if (e.getKeyCode() == e.VK_ENTER) {
          if (col == colCount - 1) {
            if (rowCount - 1 == row) {
//              row = 0;
              col = 0;
              DefaultTableModel dtm=(DefaultTableModel)table.getModel();
              dtm.addRow(new String[]{"","",""});
              row++;
//              table.selectCell(0,0);
            }
            else {
              row++;
              col = 0;
//              table.selectCell(row+1,0);
            }
          }
          else {
            col++;
//            table.selectCell(row,col+1);
          }
          table.selectCell(row, col);
          table.editCell(row,col);        }
      }
    });
  }
} 

Answer 6

getTableCellRendererComponent
public Component getTableCellRendererComponent(JTable table,
                                               Object value,
                                               boolean isSelected,
                                               boolean hasFocus,
                                               int row,
                                               int column)重写上面这个方法，如果你要屏蔽焦点的列获得了焦点，则用下面的代码返回，否则返回默认：
if(column == 3) {
super.getTableCellRendererComponent(table, value, isSelected, false, row, column);
} else {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}