java.lang.NullPointerException at OnLineOrderSystem.Server.UserDataTabMode.getRowCount(TabModels.java 7) at javax.swing.table.DefaultTableModel.setDataVector(DefaultTableModel ava:194) at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:9 at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:8 at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:6 at OnLineOrderSystem.Server.UserDataTabMode.<init>(TabModels.java:15) at OnLineOrderSystem.Server.frmUserDataManage$UserDataTab.<init>(frmUs DataManage.java:81) at OnLineOrderSystem.Server.frmUserDataManage.<init>(frmUserDataManage ava:31) at OnLineOrderSystem.Server.ServerFrame.jMenuDataUser_actionPerformed( rverFrame.java:139) at OnLineOrderSystem.Server.ServerFrame$3.actionPerformed(ServerFrame. va:104) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java: 64) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abst ctButton.java:1817) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonMod .java:419) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:2 ) at javax.swing.AbstractButton.doClick(AbstractButton.java:289) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java 113) at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseRelea d(BasicMenuItemUI.java:943) at java.awt.Component.processMouseEvent(Component.java:5134) at java.awt.Component.processEvent(Component.java:4931) at java.awt.Container.processEvent(Container.java:1566) at java.awt.Component.dispatchEventImpl(Component.java:3639) at java.awt.Container.dispatchEventImpl(Container.java:1623) at java.awt.Component.dispatchEvent(Component.java:3480) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:34 ) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:316 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095) at java.awt.Container.dispatchEventImpl(Container.java:1609) at java.awt.Window.dispatchEventImpl(Window.java:1590) at java.awt.Component.dispatchEvent(Component.java:3480) at java.awt.EventQueue.dispatchEvent(EventQueue.java:450) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatch read.java:197) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchTh ad.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:14 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:13 at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
你可以实现setValueAt()方法或改为扩展DefaultTableModel试试
(当然添加了IMPROT)
后边的方法都在运行时要出错啊。
at OnLineOrderSystem.Server.UserDataTabMode.getRowCount(TabModels.java
7)
at javax.swing.table.DefaultTableModel.setDataVector(DefaultTableModel
ava:194)
at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:9 at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:8 at javax.swing.table.DefaultTableModel.<init>(DefaultTableModel.java:6 at OnLineOrderSystem.Server.UserDataTabMode.<init>(TabModels.java:15)
at OnLineOrderSystem.Server.frmUserDataManage$UserDataTab.<init>(frmUs
DataManage.java:81)
at OnLineOrderSystem.Server.frmUserDataManage.<init>(frmUserDataManage
ava:31)
at OnLineOrderSystem.Server.ServerFrame.jMenuDataUser_actionPerformed(
rverFrame.java:139)
at OnLineOrderSystem.Server.ServerFrame$3.actionPerformed(ServerFrame.
va:104)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:
64)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Abst
ctButton.java:1817)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonMod
.java:419)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:2
)
at javax.swing.AbstractButton.doClick(AbstractButton.java:289)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java
113)
at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseRelea
d(BasicMenuItemUI.java:943)
at java.awt.Component.processMouseEvent(Component.java:5134)
at java.awt.Component.processEvent(Component.java:4931)
at java.awt.Container.processEvent(Container.java:1566)
at java.awt.Component.dispatchEventImpl(Component.java:3639)
at java.awt.Container.dispatchEventImpl(Container.java:1623)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:34
)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:316 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
at java.awt.Container.dispatchEventImpl(Container.java:1609)
at java.awt.Window.dispatchEventImpl(Window.java:1590)
at java.awt.Component.dispatchEvent(Component.java:3480)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatch
read.java:197)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchTh
ad.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:14 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:13 at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
如果是DefaultTableModel就有那么一堆错,有谁能给我一段正确的使用DefaultTableModel的程序吗?我想自己好好分析分析。
System.out.println("Refresh");
TabDataSource=Server.DB.RsUserData("");
System.out.println(" "+String.valueOf(TabDataSource.size()));
myModel.data=TabDataSource;
System.out.println(" "+String.valueOf(myModel.data.size()));
table.repaint();
把 System.out.println("Refresh");
TabDataSource=Server.DB.RsUserData("");
System.out.println(" "+String.valueOf(TabDataSource.size()));
myModel.data=TabDataSource;
System.out.println(" "+String.valueOf(myModel.data.size()));
table.repaint();//这里里的table.repaint()换成fireTableDataChanged()就可以了
这个方法回去通知table刷新的
应该是:把 System.out.println("Refresh");
TabDataSource=Server.DB.RsUserData("");
System.out.println(" "+String.valueOf(TabDataSource.size()));
myModel.data=TabDataSource;
System.out.println(" "+String.valueOf(myModel.data.size()));
table.repaint();//这里里的table.repaint()换成myModel.fireTableDataChanged()就可以了
这个方法回去通知table刷新的