I have a class like that: public class LabelTest { public LabelTest(){ final JFrame frame = new JFrame(); frame.setSize(100, 100); final StringBuilder builder = createStringBuilder(); JLabel label = new JLabel(builder.toString()); frame.add(label); frame.setVisible(true);; } private StringBuilder createStringBuilder(){ return new StringBuilder("Hello"); } } the .class - after the manipulation of jbossretro is still holding the reference to StringBuilder in the Local variable table View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4223036#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...