multiple copies of test file FileUtils.java in 8u tree

[Jonathan Dowland]

On Wed, Sep 21, 2022 at 10:50:48AM +0100, Jonathan Dowland wrote:
>Whilst working on a backport, I discovered the following two files in
>the 8u source tree
>
>    ./jdk/test/lib/testlibrary/jdk/testlibrary/FileUtils.java
>    ./jdk/test/lib/jdk/test/lib/util/FileUtils.java

To make things possibly simpler, it seems nothing is using the copy in
test/lib/util, and it is not valid Java 8:

/home/jon/rh/git/jdk.worktree.jdk8u-dev/jdk/test/lib/jdk/test/lib/util/FileUtils.java:166: error: cannot infer type arguments for SimpleFileVisitor<T>
             java.nio.file.Files.walkFileTree(dir, new SimpleFileVisitor<>() {
                                                                        ^
   reason: cannot use '<>' with anonymous inner classes
   where T is a type-variable:
     T extends Object declared in class SimpleFileVisitor
/home/jon/rh/git/jdk.worktree.jdk8u-dev/jdk/test/lib/jdk/test/lib/util/FileUtils.java:245: error: cannot find symbol
         List<String> lsofDirs = List.of("/usr/bin", "/usr/sbin");
                                     ^
   symbol:   method of(String,String)
   location: interface List
/home/jon/rh/git/jdk.worktree.jdk8u-dev/jdk/test/lib/jdk/test/lib/util/FileUtils.java:253: error: cannot find symbol
                 long pid = ProcessHandle.current().pid();
                            ^
   symbol:   variable ProcessHandle
   location: class FileUtils
/home/jon/rh/git/jdk.worktree.jdk8u-dev/jdk/test/lib/jdk/test/lib/util/FileUtils.java:260: error: cannot find symbol
                 p.getInputStream().transferTo(ps);
                                   ^
   symbol:   method transferTo(PrintStream)
   location: class InputStream


-- 
👱🏻 Jonathan Dowland <jdowland at redhat.com>
Senior Software Engineer, OpenJDK, Red Hat