jtable中 用enter代替tab 移动焦点 的问题

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.KeyStroke;public class s extends javax.swing.JFrame {    /** Creates new form NewJFrame1 */
    public s() {
        initComponents();
    }    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        AbstractAction   moveForward   =   new   AbstractAction()
        {
            public   void   actionPerformed(ActionEvent   e)
            {
                int   rowCount=jTable1.getRowCount();
                int   colCount=jTable1.getColumnCount();                int   selRow=jTable1.getSelectedRow();
                int   selCol=jTable1.getSelectedColumn();
                int  yingdonggeshu=0;                do{yingdonggeshu=yingdonggeshu+1;
                    if(selCol==colCount-1)
                    {
                        if(selRow==rowCount-1)
                        {
                            selCol=-1;
                            selRow=0;
                        }
                        else
                        {
                            selCol=-1;
                            selRow++;
                        }
                    }   }
                    while  ((jTable1.getModel().isCellEditable(selRow, selCol+yingdonggeshu))==false);                    jTable1.changeSelection(selRow,selCol+yingdonggeshu,false,false);
                    jTable1.editCellAt(selRow,selCol+yingdonggeshu);
                    if(jTable1.getEditorComponent()!=null)
                    jTable1.getEditorComponent().requestFocus();
                }
            };
            jTable1.setModel(new javax.swing.table.DefaultTableModel(
                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}
                },
                new String [] {
                    "能编辑", "Title 2", "能编辑4", "标题 4", "标题 5", "标题 6", "标题 15", "标题 18", "能编辑9"
                }
            ) {
                boolean[] canEdit = new boolean [] {
                    true, false, true, false, false, true, false, false, true
                };                public boolean isCellEditable(int rowIndex, int columnIndex) {
                    return canEdit [columnIndex];
                }
            });
            jTable1.setColumnSelectionAllowed(true);
            jTable1.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0),"moveForward");
            jTable1.getActionMap().put("moveForward",moveForward);
            jScrollPane1.setViewportView(jTable1);
            jTable1.getColumnModel().getSelectionModel().setSelectionMode(javax.swing.ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
            jTable1.getColumnModel().getColumn(0).setResizable(false);
            jTable1.getColumnModel().getColumn(1).setResizable(false);
            jTable1.getColumnModel().getColumn(2).setResizable(false);
            jTable1.getColumnModel().getColumn(3).setResizable(false);            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
            getContentPane().setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 452, Short.MAX_VALUE)
                    .addGap(314, 314, 314))
            );
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 275, Short.MAX_VALUE)
                    .addGap(25, 25, 25))
            );            pack();
        }// </editor-fold>    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {
                new NewJFrame1().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration
}
上面代码东拼西凑 实现了 用回车代替tab 把jtable 单元格的焦点 移动到下一个可编辑的单元格，有点问题          为啥  第一个单元格输入数据 回车 后 就直接能 跳到下个可编辑的单元格，
            
              以后输入数据后就必须在单元格里面点击两次回车 才能跳到下格单元格
            里面呢？？？？