https://openjdk.java.net/ 
public interface com.sun.java.accessibility.util.TopLevelWindowListener extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.java.accessibility.util.TopLevelWindowListener
  super_class: java.lang.Object
{
  public abstract void topLevelWindowCreated(java.awt.Window);
    descriptor: (Ljava/awt/Window;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      w     

  public abstract void topLevelWindowDestroyed(java.awt.Window);
    descriptor: (Ljava/awt/Window;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      w     
}
SourceFile: "TopLevelWindowListener.java"