https://openjdk.java.net/ 
public interface sun.swing.MenuItemCheckIconFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.swing.MenuItemCheckIconFactory
  super_class: java.lang.Object
{
  public abstract javax.swing.Icon getIcon(javax.swing.JMenuItem);
    descriptor: (Ljavax/swing/JMenuItem;)Ljavax/swing/Icon;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      component  

  public abstract boolean isCompatible(java.lang.Object, java.lang.String);
    descriptor: (Ljava/lang/Object;Ljava/lang/String;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      icon    
      prefix  
}
SourceFile: "MenuItemCheckIconFactory.java"