https://openjdk.java.net/ 
public interface sun.applet.AppletListener extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.applet.AppletListener
  super_class: java.lang.Object
{
  public abstract void appletStateChanged(sun.applet.AppletEvent);
    descriptor: (Lsun/applet/AppletEvent;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      e     
}
SourceFile: "AppletListener.java"