잡기 예외 오류

Question

ArrayIndexOutOfBoundsException을 잡으려고 시도하지만 작동하지 않으며 그 이유를 파악할 수 없습니까? 아이디어 나 힌트를 주시겠습니까? 왜 이런 일이 생깁니 까?

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(); 
      } 
     }); 

나는 사용자가 Jtable 설명에서 일부 행을 클릭하지 않는 경우를 처리 할 필요가

...

어떻게 프로그램이 충돌 :

당신의 try 블록에 때문입니다

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) 

Answer 1

틀린 장소. 여기에 스택 추적을 봐 :

at view.AdminGui.getSelectedUser(AdminGui.java:237) 

하고 전에 try 블록이 방법 를 호출하고 있다는주의 사항 :

System.out.println(getSelectedUser()); 

재 작성이을을 :

try{ 
    System.out.println(getSelectedUser()); 
    System.out.println("deleting id:" +Integer.parseInt((String)table.getModel().getValueAt(table.getSelectedRow(), 0))); 
    // ...