Who just called me?

In Java, when you are in a specific method and you want to know who called you, who invoked the method, this is so simple!
A few lines will do the job:

  private void callee()
  {
    // Who called me
    Throwable t = new Throwable(); 
    StackTraceElement[] elements = t.getStackTrace(); 
    System.out.println("----------------------------------");
    for (StackTraceElement ste : elements)
      System.out.println(ste.toString());
    System.out.println("----------------------------------");
   
    // More stuff goes here... 
  }

Whenever the code above is invoked, like from a button click for example

  JButton bing = new JButton("Hit me!");
  bing.addActionListener(new ActionListener()
        {
          public void actionPerformed(ActionEvent e)
          {
            callee();
          }
        });

An output like that one can be expected:

----------------------------------
tideengineimplementation.gui.TideInternalFrame.resetData(TideInternalFrame.java:3035)
tideengineimplementation.gui.TideInternalFrame.refreshButton_actionPerformed(TideInternalFrame.java:3829)
tideengineimplementation.gui.TideInternalFrame.access$8200(TideInternalFrame.java:140)
tideengineimplementation.gui.TideInternalFrame$35.actionPerformed(TideInternalFrame.java:3002)
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
java.awt.Component.processMouseEvent(Component.java:6289)
javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
java.awt.Component.processEvent(Component.java:6054)
java.awt.Container.processEvent(Container.java:2041)
java.awt.Component.dispatchEventImpl(Component.java:4652)
java.awt.Container.dispatchEventImpl(Container.java:2099)
java.awt.Component.dispatchEvent(Component.java:4482)
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
java.awt.Container.dispatchEventImpl(Container.java:2085)
java.awt.Window.dispatchEventImpl(Window.java:2478)
java.awt.Component.dispatchEvent(Component.java:4482)
java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
java.awt.EventQueue.access$000(EventQueue.java:85)
java.awt.EventQueue$1.run(EventQueue.java:603)
java.awt.EventQueue$1.run(EventQueue.java:601)
java.security.AccessController.doPrivileged(Native Method)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
java.awt.EventQueue$2.run(EventQueue.java:617)
java.awt.EventQueue$2.run(EventQueue.java:615)
java.security.AccessController.doPrivileged(Native Method)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
----------------------------------

Easy!