# HG changeset patch
# User jjg
# Date 1368407934 25200
# Node ID eced456967672f2d0e1dd1c33d7ec0f82fcc672f
# Parent  c4f13cad64792f07c1a85625ec55652025b20b44
8014363: javac test class ToolTester handles classpath incorrectly
Reviewed-by: ksrini

diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6406133/T6406133.java
--- a/langtools/test/tools/javac/api/6406133/T6406133.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6406133/T6406133.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary Compiler API ignores locale settings
  * @author  Maurizio Cimadamore
  * @library ../lib
+ * @build ToolTester
+ * @run main T6406133
  */
 
 import javax.tools.*;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6410643/T6410643.java
--- a/langtools/test/tools/javac/api/6410643/T6410643.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6410643/T6410643.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary JSR 199: The method JavaCompilerTool.run fails to handle null arguments
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
+ * @run main T6410643
  */
 
 import javax.tools.JavaFileObject;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6411310/T6411310.java
--- a/langtools/test/tools/javac/api/6411310/T6411310.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6411310/T6411310.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary JSR 199: FileObject should support user-friendly names via getName()
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6411310.java
  * @run main T6411310
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6411333/T6411333.java
--- a/langtools/test/tools/javac/api/6411333/T6411333.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6411333/T6411333.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary Ensure 6400208, 6400225, and 6400267 are tested
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6411333.java
  * @run main T6411333
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6412656/T6412656.java
--- a/langtools/test/tools/javac/api/6412656/T6412656.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6412656/T6412656.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary JSR 199: pass annotation processor instances to compiler
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
+ * @run main T6412656
  */
 
 import java.util.Set;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6415780/T6415780.java
--- a/langtools/test/tools/javac/api/6415780/T6415780.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6415780/T6415780.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,6 +28,8 @@
  * @author  igor.tseytin@...
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
+ * @run main T6415780
  */
 
 import static javax.tools.StandardLocation.CLASS_PATH;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6418694/T6418694.java
--- a/langtools/test/tools/javac/api/6418694/T6418694.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6418694/T6418694.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary JSR 199: JavaFileManager.hasLocation(Location)
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6418694.java
  * @run main T6418694
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6421111/T6421111.java
--- a/langtools/test/tools/javac/api/6421111/T6421111.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6421111/T6421111.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary NullPointerException thrown when retrieving bounds for the type parameter
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile -Xlint:all T6421111.java
  * @run main T6421111
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6421756/T6421756.java
--- a/langtools/test/tools/javac/api/6421756/T6421756.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6421756/T6421756.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary 6421756 JSR 199: In the method JavaCompilerTool.getTask 'options' can be supplied in the place of 'classes'
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6421756.java
  * @run main T6421756
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6422215/T6422215.java
--- a/langtools/test/tools/javac/api/6422215/T6422215.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6422215/T6422215.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary JSR 199: What happens if a directory is missing
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
+ * @run main T6422215
  */
 
 import java.io.File;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6422327/T6422327.java
--- a/langtools/test/tools/javac/api/6422327/T6422327.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6422327/T6422327.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary JSR 199: JavaCompilerTool can compile and generate '.class' of non '.java' files
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
+ * @run main T6422327
  */
 
 import java.io.File;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6423003/T6423003.java
--- a/langtools/test/tools/javac/api/6423003/T6423003.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6423003/T6423003.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary JSR 199: confusing help message with compiler API
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6423003.java
  * @run main T6423003
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6431257/T6431257.java
--- a/langtools/test/tools/javac/api/6431257/T6431257.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6431257/T6431257.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary JSR 199: Changes to JavaFileManager to support JSR 269 Filer API
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6431257.java package-info.java
  * @run main T6431257 foo.bar.baz foo/bar/baz
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6437349/T6437349.java
--- a/langtools/test/tools/javac/api/6437349/T6437349.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6437349/T6437349.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,7 @@
  * @bug     6437349
  * @summary JSR 199: JavaFileObject.isNameCompatible() will give true with some incompatible kinds
  * @library ../lib
+ * @build ToolTester
  * @compile T6437349.java
  * @run main T6437349
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6437999/T6437999.java
--- a/langtools/test/tools/javac/api/6437999/T6437999.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6437999/T6437999.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary Unit test for encoding argument to standard file manager
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6437999.java
  * @run main T6437999
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6440333/T6440333.java
--- a/langtools/test/tools/javac/api/6440333/T6440333.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6440333/T6440333.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary SimpleJavaFileObject.toString() generates URI with some extra message
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6440333.java
  * @run main T6440333
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6440528/T6440528.java
--- a/langtools/test/tools/javac/api/6440528/T6440528.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6440528/T6440528.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary javac deposits package-info.class in bogus directory
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6440528.java
  * @run main T6440528
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6468404/T6468404.java
--- a/langtools/test/tools/javac/api/6468404/T6468404.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6468404/T6468404.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,6 +28,7 @@
  * @author  jesse.glick@...
  * @author  Peter von der Ah\u00e9
  * @library ../lib
+ * @build ToolTester
  * @compile T6468404.java
  * @run main T6468404
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6731573/T6731573.java
--- a/langtools/test/tools/javac/api/6731573/T6731573.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6731573/T6731573.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary diagnostic output should optionally include source line
  * @author  Maurizio Cimadamore
  * @library ../lib
+ * @build ToolTester
+ * @run main T6731573
  */
 
 import java.io.*;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/6733837/T6733837.java
--- a/langtools/test/tools/javac/api/6733837/T6733837.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/6733837/T6733837.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,8 @@
  * @summary Compiler API ignores locale settings
  * @author  Maurizio Cimadamore
  * @library ../lib
+ * @build ToolTester
+ * @run main T6733837
  */
 
 import java.io.StringWriter;
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/TestJavacTaskScanner.java
--- a/langtools/test/tools/javac/api/TestJavacTaskScanner.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/TestJavacTaskScanner.java	Sun May 12 18:18:54 2013 -0700
@@ -27,6 +27,7 @@
  * @summary Additional functionality test of task and JSR 269
  * @author  Peter von der Ah\u00e9
  * @library ./lib
+ * @build ToolTester
  * @run main TestJavacTaskScanner TestJavacTaskScanner.java
  */
 
@@ -160,7 +161,7 @@
         StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding);
         try {
             fm.setLocation(SOURCE_PATH,  Arrays.asList(test_src));
-            fm.setLocation(CLASS_PATH,   Arrays.asList(test_classes, javac_classes));
+            fm.setLocation(CLASS_PATH,   join(test_class_path, Arrays.asList(javac_classes)));
             fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes));
         } catch (IOException e) {
             throw new AssertionError(e);
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/guide/Test.java
--- a/langtools/test/tools/javac/api/guide/Test.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/guide/Test.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  * @summary Various bugs fixed while writing Compiler API Guide
  * @author  Peter von der Ah\u0081
  * @library ../lib
+ * @build ToolTester
  * @compile Test.java
  * @run main Test
  */
diff -r c4f13cad6479 -r eced45696767 langtools/test/tools/javac/api/lib/ToolTester.java
--- a/langtools/test/tools/javac/api/lib/ToolTester.java	Fri May 10 14:31:42 2013 -0700
+++ b/langtools/test/tools/javac/api/lib/ToolTester.java	Sun May 12 18:18:54 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.Charset;
-import java.util.Arrays;
+import java.util.*;
 import javax.tools.*;
 
 import static javax.tools.StandardLocation.CLASS_PATH;
@@ -34,6 +34,8 @@
 public class ToolTester {
     public final File test_src     = new File(System.getProperty("test.src", "."));
     public final File test_classes = new File(System.getProperty("test.classes", "."));
+    public final List<File> test_class_path = pathToFiles(System.getProperty("test.class.path"),
+                                     Arrays.asList(test_classes));
     public final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
     public final StandardJavaFileManager fm = getFileManager(tool, null, null);
     public JavaCompiler.CompilationTask task = null;
@@ -43,11 +45,36 @@
         StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding);
         try {
             fm.setLocation(SOURCE_PATH,  Arrays.asList(test_src));
-            fm.setLocation(CLASS_PATH,   Arrays.asList(test_classes));
+            fm.setLocation(CLASS_PATH,   test_class_path);
             fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes));
         } catch (IOException e) {
             throw new AssertionError(e);
         }
         return fm;
     }
+
+    protected List<File> pathToFiles(String path, List<File> defaultPath) {
+        List<File> files = new ArrayList<>();
+        for (String f: path.split(File.pathSeparator)) {
+            if (f.isEmpty())
+                continue;
+            File file = new File(f);
+            if (file.exists())
+                files.add(file);
+        }
+        if (files.isEmpty())
+            files.addAll(defaultPath);
+        return files;
+    }
+
+    protected <T> List<T> join(List<T> a, List<T> b) {
+        if (a.isEmpty())
+            return b;
+        if (b.isEmpty())
+            return a;
+        List<T> result = new ArrayList<>();
+        result.addAll(a);
+        result.addAll(b);
+        return result;
+    }
 }