src/java.base/share/classes/jdk/internal/misc/JavaUtilJarAccess.java

@@ -39,7 +39,6 @@
     public CodeSource getCodeSource(JarFile jar, URL url, String name);
     public Enumeration<String> entryNames(JarFile jar, CodeSource[] cs);
     public Enumeration<JarEntry> entries2(JarFile jar);
     public void setEagerValidation(JarFile jar, boolean eager);
     public List<Object> getManifestDigests(JarFile jar);
-    public String getRealName(JarFile jar, JarEntry entry);
 }