O que tem em com.zion.time.windows.Login$2.actionPerformed(Login.java:199)?
Ola pessoal,
estou tento um pequeno problema com o ResutSet:
con = new DBConnection();
System.out.println("yes");
st = con.createStatement();
System.out.println("yes");
rs = st.executeQuery("SELECT * FROM user");
o erro:
yes
yes
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.zion.time.windows.Login$2.actionPerformed(Login.java:199)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1957)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2278)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:377)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:232)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
at java.awt.Component.processMouseEvent(Component.java:5955)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3285)
at java.awt.Component.processEvent(Component.java:5720)
at java.awt.Container.processEvent(Container.java:1960)
at java.awt.Component.dispatchEventImpl(Component.java:4365)
at java.awt.Container.dispatchEventImpl(Container.java:2018)
at java.awt.Component.dispatchEvent(Component.java:4195)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4222)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3886)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3816)
at java.awt.Container.dispatchEventImpl(Container.java:2004)
at java.awt.Window.dispatchEventImpl(Window.java:2210)
at java.awt.Component.dispatchEvent(Component.java:4195)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
se alguem puder ajudar!?!?!
seria isso:
private ActionListener setUser = new ActionListener()
{
DBConnection con = null;
Statement st;
ResultSet rs = null;
private String password, user = null;
public void actionPerformed(ActionEvent setUser)
{
try
{
con = new DBConnection();
System.out.println("yes");
st = con.createStatement();
System.out.println("yes");
rs = st.executeQuery("SELECT * FROM time.user");
System.out.println("yes");
}
catch(SQLException sqle)
{
sqle.printStackTrace();
}
catch (SecurityException e)
{
}
catch (IOException e)
{
}
}
};
um actionlistener para uma botao!