Bug 111885 [decorators] info if class or interface is in file
Currently the package explorer (and other widgets showing file lists) show a small 'J' icon for java files. It would be useful if this was one symbol for classes, and another for interfaces. The choice would be made based on the public class/interface in the file. I frequently have a class and interface of the same name in different packages, and it's hard to tell the difference.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPluginImages.java
public static final String IMG_OBJS_REFACTORING_FATAL= NAME_PREFIX + "fatalerror_obj.gif"; 
	public static final String IMG_OBJS_REFACTORING_ERROR= NAME_PREFIX + "error_obj.gif"; 
	public static final String IMG_OBJS_REFACTORING_WARNING= NAME_PREFIX + "warning_obj.gif"; 
	public static final String IMG_OBJS_REFACTORING_INFO= NAME_PREFIX + "info_obj.gif"; 	
	public static final String IMG_OBJS_NLS_TRANSLATE= NAME_PREFIX + "translate.gif"; 
	public static final String IMG_OBJS_NLS_NEVER_TRANSLATE= NAME_PREFIX + "never_translate.gif"; 
	public static final String IMG_OBJS_NLS_SKIP= NAME_PREFIX + "skip.gif"; 
	public static final String IMG_OBJS_SEARCH_READACCESS= NAME_PREFIX + "occ_read.gif"; 
	public static final String IMG_OBJS_SEARCH_WRITEACCESS= NAME_PREFIX + "occ_write.gif"; 
	public static final String IMG_OBJS_SEARCH_OCCURRENCE= NAME_PREFIX + "occ_match.gif"; 
	
	public static final String IMG_OBJS_HELP= NAME_PREFIX + "help.gif"; 
	/*
	 * Set of predefined Image Descriptors.
	 */
	public static final ImageDescriptor DESC_VIEW_ERRORWARNING_TAB= createUnManaged(T_EVIEW, "errorwarning_tab.gif"); 
	public static final ImageDescriptor DESC_VIEW_CLASSFILEGENERATION_TAB= createUnManaged(T_EVIEW, "classfilegeneration_tab.gif"); 
	public static final ImageDescriptor DESC_VIEW_JDKCOMPLIANCE_TAB= createUnManaged(T_EVIEW, "jdkcompliance_tab.gif"); 
	
	public static final ImageDescriptor DESC_ELCL_FILTER= createUnManaged(T_ELCL, "filter_ps.gif"); 
	public static final ImageDescriptor DESC_DLCL_FILTER= createUnManaged(T_DLCL, "filter_ps.gif"); 
	public static final ImageDescriptor DESC_ELCL_CODE_ASSIST= createUnManaged(T_ELCL, "metharg_obj.gif"); 
	public static final ImageDescriptor DESC_DLCL_CODE_ASSIST= createUnManaged(T_DLCL, "metharg_obj.gif"); 
	public static final ImageDescriptor DESC_ELCL_VIEW_MENU= createManaged(T_ELCL, "view_menu.gif", IMG_ELCL_VIEW_MENU); 
	public static final ImageDescriptor DESC_DLCL_VIEW_MENU= createManaged(T_DLCL, "view_menu.gif", IMG_DLCL_VIEW_MENU); 
	
	public static final ImageDescriptor DESC_MISC_PUBLIC= createManagedFromKey(T_OBJ, IMG_MISC_PUBLIC);
	public static final ImageDescriptor DESC_MISC_PROTECTED= createManagedFromKey(T_OBJ, IMG_MISC_PROTECTED);
	public static final ImageDescriptor DESC_MISC_PRIVATE= createManagedFromKey(T_OBJ, IMG_MISC_PRIVATE);