RFR (XXS) 8027803: NPE in test infrastructure aka: test/sun/reflect/AnonymousNewInstance/ManyNewInstanceAnonTest.java fails

[Robert Field]

Please review the fix for:

https://bugs.openjdk.java.net/browse/JDK-8027803

Basically, the ClassFileInstaller test utility is getting a Null Pointer 
Exception when the installed class file is in the default package (no 
package declared). And the fix is to check for the null that occurs in 
that case --


    test/lib/testlibrary/ClassFileInstaller.java

------------------------------------------------------------------------

   28 import java.nio.file.StandardCopyOption;
   29
   30 /**
   31  * Dump a class file for a class on the class path in the current directory
   32  */
   33 public class ClassFileInstaller {
   34     /**
   35      * @param args The names of the classes to dump
   36      * @throws Exception
   37      */
   38     public static void main(String... args) throws Exception {
   39         for (String arg : args) {
   40             ClassLoader cl = ClassFileInstaller.class.getClassLoader();
   41
   42             // Convert dotted class name to a path to a class file
   43             String pathName = arg.replace('.', '/').concat(".class");
   44             InputStream is = cl.getResourceAsStream(pathName);
   45
   46             // Create the class file's package directory
   47             Path p = Paths.get(pathName);
   48             Files.createDirectories(p.getParent());



   49             // Create the class file
   50             Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
   51         }
   52     }
   53 }

	
------------------------------------------------------------------------

   28 import java.nio.file.StandardCopyOption;
   29
   30 /**
   31  * Dump a class file for a class on the class path in the current directory
   32  */
   33 public class ClassFileInstaller {
   34     /**
   35      * @param args The names of the classes to dump
   36      * @throws Exception
   37      */
   38     public static void main(String... args) throws Exception {
   39         for (String arg : args) {
   40             ClassLoader cl = ClassFileInstaller.class.getClassLoader();
   41
   42             // Convert dotted class name to a path to a class file
   43             String pathName = arg.replace('.', '/').concat(".class");
   44             InputStream is = cl.getResourceAsStream(pathName);
   45
   46             // Create the class file's package directory
   47             Path p = Paths.get(pathName);
   48             Path parent = p.getParent();
   49             if (parent != null) {
   50                 Files.createDirectories(parent);
   51             }
   52             // Create the class file
   53             Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
   54         }
   55     }
   56 }


Contributed by Alan Bateman.

Thanks,
Robert