java Jtable 点一下才刷新 jtable刷新表格

1。写死数据的蠢办法
/
//            一个显示姓名，性别和出生年月的表格,点击表格某行的时候会有两种事件发生            //
/  package com.yinbodotcc.JTable;
/*
A网友说： repain()调用Component类的update()方法清除Component背景中以前的绘图，
          然后update()在调用paint()。一般不要重载repaint()，有必要的话重载update()。B网友说： repaint()   ->   update()   ->   paint()   
          update()   一般都是有需要才被调用的。   
          通常应该重载   update()   和   paint()   而不是   repaint()。我说：    我就喜欢看大家说，然后记录下来，哈哈
 
*/
//   这里需要学会JTable事件处理，        以及为了线程安全，需要从事件分派线程出发来显示界面import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.Dimension;
import java.awt.GridLayout;import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;public class SimpleTableDemo extends JPanel {
    private boolean DEBUG = false;
 private boolean ALLOW_ROW_SELECTION = true;
 //个人感觉列可以选择，用处不是很大，掌握行可以选择，及单独的单元可以选中比较重要
 private boolean ALLOW_COLUMN_SELECTION = false;    public SimpleTableDemo() {
        super(new GridLayout(1,0));        //表格中数据填充
  String[] columnNames = {"姓名","性别","出生年月","婚否"};
        Object[][] data = {
            {"杨安印", "男",
             new Integer(19880206), new Boolean(false)},
            {"吴义田", "男",
             new Integer(19890206), new Boolean(true)}
                          };
        final JTable table = new JTable(data, columnNames);
        table.setPreferredScrollableViewportSize(new Dimension(500, 70));        
  
  ///
        ///
  //点击表格体的事件
  if (DEBUG) {
            table.addMouseListener(new MouseAdapter() {
                public void mouseClicked(MouseEvent e) {
                    printDebugData(table);
                }
            });
        }
  table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  //点击表格某行的事件
  if(ALLOW_ROW_SELECTION){
   
   ListSelectionModel lsm=table.getSelectionModel();
   lsm.addListSelectionListener(new ListSelectionListener(){
    public void valueChanged(ListSelectionEvent e)
    {
     //这一句若没有，则点击另外一行时候，将    "...被选中"打印两次
     if (e.getValueIsAdjusting()) return;     ListSelectionModel ls=(ListSelectionModel)e.getSource();
     if(ls.isSelectionEmpty())
     {
      System.out.println("什么也没有选中");
     }
     else
     {
      int index=ls.getMinSelectionIndex();
      System.out.println("行: "+index+" 被选中");
     }
    }
   });  }
  else table.setRowSelectionAllowed(false);
  //点击表格某列的事件
  if(ALLOW_COLUMN_SELECTION)
  {
   if (ALLOW_ROW_SELECTION)
   {
                //可以选择单独的单元
                table.setCellSelectionEnabled(true);
            }
            table.setColumnSelectionAllowed(true);
            ListSelectionModel colSM =table.getColumnModel().getSelectionModel();
            colSM.addListSelectionListener(new ListSelectionListener() {
                public void valueChanged(ListSelectionEvent e) {
                   
                    if (e.getValueIsAdjusting()) return;                    ListSelectionModel lsm = (ListSelectionModel)e.getSource();
                    if (lsm.isSelectionEmpty()) {
                        System.out.println("没有列被选中");
                    } else {
                        int selectedCol = lsm.getMinSelectionIndex();
                        System.out.println("列 " + selectedCol
                                           + " 被选中");
                    }
                }
            });  }
  
  
        
        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane);
    }    private void printDebugData(JTable table) {
        int numRows = table.getRowCount();
        int numCols = table.getColumnCount();
        javax.swing.table.TableModel model = table.getModel();        System.out.println("Value of data: ");
        for (int i=0; i < numRows; i++) {
            System.out.print("    row " + i + ":");
            for (int j=0; j < numCols; j++) {
                System.out.print("  " + model.getValueAt(i, j));
            }
            System.out.println();
        }
        System.out.println("--------------------------");
    }    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        
        JFrame frame = new JFrame("没有用DataModel的JTable例子");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        
        SimpleTableDemo newContentPane = new SimpleTableDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);        
  
  //调整此窗口的大小，以适合其子组件的首选大小和布局
  frame.pack();
        frame.setVisible(true);
    }    public static void main(String[] args) {
       
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}
             
  
  缺点评价：
A。所有行都能编辑，不一定好。
B。要求是数组数据，但是如果数据是从数据库中获取，则不方便。
C。所有数据都被作为String类型，非常不方便。
所以我们需要更大的方便，请望下面看，我们会有进步的 
2。    让表格某一行不被选中(网友提供的做法)

///class MyLSL implements ListSelectionListener { 
            private final int notSelectableRow; 
            public MyLSL( int notSelectableRow ) { 
                this.notSelectableRow = notSelectableRow; 
            } 
            public void valueChanged( ListSelectionEvent e ) { 
                if ( ! e.getValueIsAdjusting( ) && t.isRowSelected( notSelectableRow ) ) 
                    t.removeRowSelectionInterval( notSelectableRow, notSelectableRow ); 
            } 
        } 
然后就可以：
 t.getSelectionModel( ).addListSelectionListener( new MyLSL( 1 ) ); 
这里t是一个 
3.

///
                                                                     自己定义数据模型，然后传给视图


import javax.swing.JFrame;
import javax.swing.table.AbstractTableModel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.Dimension;
import java.awt.GridLayout;import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;



看模型类：
class MyTableModel extends AbstractTableModel
{
    //表格中数据填充
 String[] columnNames = {"姓名","性别","出生年月","婚否"};
    Object[][] data = {
        {"杨安印", "男",
         new Integer(19880206), new Boolean(false)},
        {"吴义田", "男",
         new Integer(19890206), new Boolean(true)}
                      };
    public int getRowCount()
    {
     return data.length;
    }
    public int getColumnCount()
    {
     return columnNames.length;
    }
    public Object getValueAt(int row, int column)
    {
     return data[row][column];
    }
    public Class<?> getColumnClass(int columnIndex)
    {
     return getValueAt(0, columnIndex).getClass();
     
    }
    public String getColumnName(int column)
    {
     return columnNames[column];
    }
    public void setValueAt(Object value, int row, int col) {//其实这个就包含了一定得事件处理性质
        if (SimpleTableDemo.DEBUG) {
            System.out.println("设置第 " + row + "行,第" + col
                               + "列得值为 " + value
                               + " 它得类是 "
                               + value.getClass());
        }        data[row][col] = value;
        fireTableCellUpdated(row, col);//还需要更新        if (SimpleTableDemo.DEBUG) {
            System.out.println("新得数据是:");
            printDebugData();
        }
    }
    public boolean isCellEditable(int rowIndex,int columnIndex)
    {
     if(columnIndex<1)
      return false;
     else return true;
    }
    private void printDebugData() {
        int numRows = getRowCount();
        int numCols = getColumnCount();        for (int i=0; i < numRows; i++) {
            System.out.print("    row " + i + ":");
            for (int j=0; j < numCols; j++) {
                System.out.print("  " + data[i][j]);
            }
            System.out.println();
        }
        System.out.println("--------------------------");
    }
}



视图类：
public class SimpleTableDemo extends JPanel {
    public static final boolean DEBUG = true;
 private boolean ALLOW_ROW_SELECTION = true;
 
    public SimpleTableDemo() {
        super(new GridLayout(1,0));
        
        MyTableModel m=new MyTableModel();
        final JTable table = new JTable(m);
        table.setPreferredScrollableViewportSize(new Dimension(500, 70));
   
  
        ///
  //点击表格体的事件
  if (DEBUG) {
            table.addMouseListener(new MouseAdapter() {
                public void mouseClicked(MouseEvent e) {
                    printDebugData(table);
                }
            });
        }
  table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  //点击表格某行的事件
  if(ALLOW_ROW_SELECTION){
   
   ListSelectionModel lsm=table.getSelectionModel();
   lsm.addListSelectionListener(new ListSelectionListener(){
    public void valueChanged(ListSelectionEvent e)
    {
     //这一句若没有，则点击另外一行时候，将    "...被选中"打印两次
     if (e.getValueIsAdjusting()) return;     ListSelectionModel ls=(ListSelectionModel)e.getSource();
     if(ls.isSelectionEmpty())
     {
      System.out.println("什么也没有选中");
     }
     else
     {
      int index=ls.getMinSelectionIndex();
      System.out.println("行: "+index+" 被选中");
     }
    }
   });  }
  else table.setRowSelectionAllowed(false);
  
  
        
        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane);
    }    private void printDebugData(JTable table) {
        int numRows = table.getRowCount();
        int numCols = table.getColumnCount();
        javax.swing.table.TableModel model = table.getModel();        System.out.println("Value of data: ");
        for (int i=0; i < numRows; i++) {
            System.out.print("    row " + i + ":");
            for (int j=0; j < numCols; j++) {
                System.out.print("  " + model.getValueAt(i, j));
            }
            System.out.println();
        }
        System.out.println("--------------------------");
    }    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        
        JFrame frame = new JFrame("没有用DataModel的JTable例子");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        
        SimpleTableDemo newContentPane = new SimpleTableDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);        
  
  //调整此窗口的大小，以适合其子组件的首选大小和布局
  frame.pack();
        frame.setVisible(true);
    }    public static void main(String[] args) {
       
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}