我尝试捕获一个ArrayIndexOutOfBoundsException,但它不起作用,我无法弄清楚为什么?你能给我一些想法或暗示,为什么会这样???
public void actionPerformed(ActionEvent arg0) {
System.out.println(getSelectedUser());
try{
System.out.println("deleting id:" +Integer.parseInt((String)table.getModel().getValueAt(table.getSelectedRow(), 0)));
table.getModel().getValueAt(table.getSelectedRow(), 0)));
} catch (ArrayIndexOutOfBoundsException e){
JOptionPane.showMessageDialog(frmBugSurveilance, "Please select an user!");
}
catch (Exception e){
JOptionPane.showMessageDialog(frmBugSurveilance, "Please select an user!");
}
getUsers();
}
});
我需要处理用户没有点击Jtable中的某一行的情况......
程序如何崩溃:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementData(Unknown Source)
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableModel.getValueAt(Unknown Source)
at view.AdminGui.getSelectedUser(AdminGui.java:237)
at view.AdminGui$3.actionPerformed(AdminGui.java:149)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.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.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(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)
答案 0 :(得分:4)
这是因为您的try
区块位置错误。在这里查看堆栈跟踪:
at view.AdminGui.getSelectedUser(AdminGui.java:237)
并注意您在 try
块之前调用该方法:
System.out.println(getSelectedUser());
重写:
try{
System.out.println(getSelectedUser());
System.out.println("deleting id:" +Integer.parseInt((String)table.getModel().getValueAt(table.getSelectedRow(), 0)));
// ...