异常，急需解决，怀疑是JTxetField.getText()这里出错，忘高手指点，程序代码部分如下

Question

textField3.setEnabled(false);
textField3.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
System.out.println("mouseReleased");
String tempstr = "";
// if(textField3!=null){
// System.out.println("test point 1");
// tempstr = textField3.getText();
// System.out.println("test point 2");
// }
String sfs = "";

sfs = table_Model.getValueAt(table.getSelectedRow(),
table.getSelectedColumn()).toString();
System.out.println("test point 111");
if (textField3.getText().equals("+")) {
System.out.println("start expand");
int selectRow = table.getSelectedRow();
System.out.println("select row = " + selectRow);
System.out.println("expand axm");
textField3.setText("-");
table_Model.expandRow(vector, selectRow);
table.updateUI();
} else if (textField3.getText().equals("-")) {
int selectRow = table.getSelectedRow();
System.out.println("select row = " + selectRow);
System.out.println("hidden axm");
textField3.setText("+");
table_Model.hiddenRow(vector, selectRow);
table.updateUI();
} else {
System.out.println("textField is null");
}
}
});报的异常是：
mouseReleased
test point 111
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.plaf.basic.BasicTableUI$Handler.setValueIsAdjusting(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI$Handler.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)start expand
select row = 0
expand axm
axm position = 0
select row = 0
content's size = 1
content's size = 2
content's size = 3
content's size = 4 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Answer 1

把textfield3.getText()输出来看看

Answer 2

NullPointerException 自己debug调吧

Answer 3

mouseReleased  是键盘按下时候，抛的异常。
如果不确定TestField里的值那就用     "+".equals(textField3.getText()),在这设个断点，debug下。

Answer 4

现在找出问题原因了，不过还是无法解决，我把table.updateUI(),改成table.repaint(),就不会报错，但是表格刷新又不的行了，请问是杂个回事，用UpdateUI又有错，

Answer 5

你尝试将table.updateUI()去掉改掉顶层容器的validate()方法试试

Answer 6

在model添加的时候就刷新，用fireinsertXXX()进行刷新，就不会出现表格刷新不成功。