Populating JTextField based on latest KeyStroke

Question

The use case in my UI is to populate two JTextField components based on double clicking items in a JList. The easy was is to use a JCheckBox

Answer 1

As everyone has suggested initialize a FocusListener to both the text fields and and point it to a string variable when either of the loses focus.

Code:

String LastFocusLost = null;

jTextField1.addFocusListener(new java.awt.event.FocusAdapter()
 {
  public void focusLost(java.awt.event.FocusEvent evt)
     {
      LastFocusLost = "jTextField1";
     }  
 });

jTextField2.addFocusListener(new java.awt.event.FocusAdapter()
 {
  public void focusLost(java.awt.event.FocusEvent evt)
     {
      LastFocusLost = "jTextField2";
     }  
 });

In the mouseListener add a if-else then:

if ("jTextField1".equals(LastFocusLost))
 {
   //;
 }

else if ("jTextField2".equals(LastFocusLost))
 {
  //;
 }