src/java.base/share/classes/java/util/jar/JarFile.java

*** 591,601 ****
              }
          }
          if (includeUnsigned) {
              return unsignedEntryNames();
          } else {
!             return new Enumeration<String>() {
  
                  public boolean hasMoreElements() {
                      return false;
                  }
  
--- 591,601 ----
              }
          }
          if (includeUnsigned) {
              return unsignedEntryNames();
          } else {
!             return new Enumeration<>() {
  
                  public boolean hasMoreElements() {
                      return false;
                  }
  
*** 617,627 ****
              return jv.entries2(this, super.entries());
          }
  
          // screen out entries which are never signed
          final Enumeration<? extends ZipEntry> enum_ = super.entries();
!         return new Enumeration<JarEntry>() {
  
              ZipEntry entry;
  
              public boolean hasMoreElements() {
                  if (entry != null) {
--- 617,627 ----
              return jv.entries2(this, super.entries());
          }
  
          // screen out entries which are never signed
          final Enumeration<? extends ZipEntry> enum_ = super.entries();
!         return new Enumeration<>() {
  
              ZipEntry entry;
  
              public boolean hasMoreElements() {
                  if (entry != null) {
*** 667,677 ****
          }
      }
  
      private Enumeration<String> unsignedEntryNames() {
          final Enumeration<JarEntry> entries = entries();
!         return new Enumeration<String>() {
  
              String name;
  
              /*
               * Grab entries from ZIP directory but screen out
--- 667,677 ----
          }
      }
  
      private Enumeration<String> unsignedEntryNames() {
          final Enumeration<JarEntry> entries = entries();
!         return new Enumeration<>() {
  
              String name;
  
              /*
               * Grab entries from ZIP directory but screen out