diff --git a/src/main/java/rife/bld/operations/AbstractToolProviderOperation.java b/src/main/java/rife/bld/operations/AbstractToolProviderOperation.java
index 6a6d40e..42e6b0c 100644
--- a/src/main/java/rife/bld/operations/AbstractToolProviderOperation.java
+++ b/src/main/java/rife/bld/operations/AbstractToolProviderOperation.java
@@ -97,10 +97,8 @@ public List<String> cmdFiles() {
      * @param files one or more files
      * @return this operation instance
      */
-    @SuppressWarnings({"unchecked"})
     public T cmdFilesPaths(List<Path> files) {
-        cmdFiles_.addAll(files.stream().map(Path::toFile).map(File::getAbsolutePath).toList());
-        return (T) this;
+        return cmdFilesStrings(files.stream().map(Path::toFile).map(File::getAbsolutePath).toList());
     }
 
     /**
diff --git a/src/main/java/rife/bld/operations/JlinkOptions.java b/src/main/java/rife/bld/operations/JlinkOptions.java
index 1bdb19f..83dbb3b 100644
--- a/src/main/java/rife/bld/operations/JlinkOptions.java
+++ b/src/main/java/rife/bld/operations/JlinkOptions.java
@@ -207,7 +207,7 @@ public JlinkOptions modulePath(File path) {
      * @return this map of options
      */
     public JlinkOptions modulePath(Path path) {
-        return modulePath(path.toFile());
+        return modulePath(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -268,7 +268,7 @@ public JlinkOptions output(File path) {
      * @return this map of options
      */
     public JlinkOptions output(Path path) {
-        return output(path.toFile());
+        return output(path.toFile().getAbsolutePath());
     }
 
     /**
diff --git a/src/main/java/rife/bld/operations/JmodOperation.java b/src/main/java/rife/bld/operations/JmodOperation.java
index a2aa91e..bf044fc 100644
--- a/src/main/java/rife/bld/operations/JmodOperation.java
+++ b/src/main/java/rife/bld/operations/JmodOperation.java
@@ -70,8 +70,7 @@ public JmodOperation jmodFile(String file) {
      * @return this operation instance
      */
     public JmodOperation jmodFile(File file) {
-        jmodFile_ = file.getAbsolutePath();
-        return this;
+        return jmodFile(file.getAbsolutePath());
     }
 
     /**
@@ -83,7 +82,7 @@ public JmodOperation jmodFile(File file) {
      * @return this operation instance
      */
     public JmodOperation jmodFile(Path file) {
-        return jmodFile(file.toFile());
+        return jmodFile(file.toFile().getAbsolutePath());
     }
 
     /**
diff --git a/src/main/java/rife/bld/operations/JmodOptions.java b/src/main/java/rife/bld/operations/JmodOptions.java
index d9e3128..cada561 100644
--- a/src/main/java/rife/bld/operations/JmodOptions.java
+++ b/src/main/java/rife/bld/operations/JmodOptions.java
@@ -60,7 +60,7 @@ public JmodOptions cmds(File path) {
      * @return this map of options
      */
     public JmodOptions cmds(Path path) {
-        return cmds(path.toFile());
+        return cmds(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -110,7 +110,7 @@ public JmodOptions config(File path) {
      * @return this map of options
      */
     public JmodOptions config(Path path) {
-        return config(path.toFile());
+        return config(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -152,7 +152,7 @@ public JmodOptions dir(File path) {
      * @return this map of options
      */
     public JmodOptions dir(Path path) {
-        return dir(path.toFile());
+        return dir(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -256,7 +256,7 @@ public JmodOptions headerFiles(File path) {
      * @return this map of options
      */
     public JmodOptions headerFiles(Path path) {
-        return headerFiles(path.toFile());
+        return headerFiles(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -288,7 +288,7 @@ public JmodOptions legalNotices(File path) {
      * @return this map of options
      */
     public JmodOptions legalNotices(Path path) {
-        return legalNotices(path.toFile());
+        return legalNotices(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -320,7 +320,7 @@ public JmodOptions libs(File path) {
      * @return this map of options
      */
     public JmodOptions libs(Path path) {
-        return libs(path.toFile());
+        return libs(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -363,7 +363,7 @@ public JmodOptions manPages(File path) {
      * @return this map of options
      */
     public JmodOptions manPages(Path path) {
-        return manPages(path.toFile());
+        return manPages(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -394,7 +394,7 @@ public JmodOptions modulePath(File path) {
      * @return this map of options
      */
     public JmodOptions modulePath(Path path) {
-        return modulePath(path.toFile());
+        return modulePath(path.toFile().getAbsolutePath());
     }
 
     /**
diff --git a/src/main/java/rife/bld/operations/JpackageOperation.java b/src/main/java/rife/bld/operations/JpackageOperation.java
index 07b87b8..5c40118 100644
--- a/src/main/java/rife/bld/operations/JpackageOperation.java
+++ b/src/main/java/rife/bld/operations/JpackageOperation.java
@@ -118,7 +118,7 @@ public Launcher(String name, File path) {
         }
 
         public Launcher(String name, Path path) {
-            this(name, path.toFile());
+            this(name, path.toFile().getAbsolutePath());
         }
     }
 }
diff --git a/src/main/java/rife/bld/operations/JpackageOptions.java b/src/main/java/rife/bld/operations/JpackageOptions.java
index feeb297..6dd5ef0 100644
--- a/src/main/java/rife/bld/operations/JpackageOptions.java
+++ b/src/main/java/rife/bld/operations/JpackageOptions.java
@@ -112,7 +112,7 @@ public JpackageOptions appImage(File path) {
      */
     @SuppressWarnings("UnusedReturnValue")
     public JpackageOptions appImage(Path path) {
-        return appImage(path.toFile());
+        return appImage(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -204,7 +204,7 @@ public JpackageOptions dest(File path) {
      * @return this map of options
      */
     public JpackageOptions dest(Path path) {
-        return dest(path.toFile());
+        return dest(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -271,7 +271,7 @@ public JpackageOptions fileAssociations(List<File> paths) {
      * @return this map of options
      */
     public JpackageOptions fileAssociationsPaths(List<Path> paths) {
-        return fileAssociations(paths.stream().map(Path::toFile).toList());
+        return fileAssociationsStrings(paths.stream().map(Path::toFile).map(File::getAbsolutePath).toList());
     }
 
     /**
@@ -316,7 +316,7 @@ public JpackageOptions icon(File path) {
      * @return this map of options
      */
     public JpackageOptions icon(Path path) {
-        return icon(path.toFile());
+        return icon(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -354,7 +354,7 @@ public JpackageOptions input(File path) {
      */
     @SuppressWarnings("UnusedReturnValue")
     public JpackageOptions input(Path path) {
-        return input(path.toFile());
+        return input(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -386,7 +386,7 @@ public JpackageOptions installDir(File path) {
      * @return this map of options
      */
     public JpackageOptions installDir(Path path) {
-        return installDir(path.toFile());
+        return installDir(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -472,7 +472,7 @@ public JpackageOptions licenseFile(File path) {
      * @return this map of options
      */
     public JpackageOptions licenseFile(Path path) {
-        return licenseFile(path.toFile());
+        return licenseFile(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -634,8 +634,7 @@ public JpackageOptions macDmgContent(String... additionalContents) {
      */
     @SuppressWarnings("UnusedReturnValue")
     public JpackageOptions macDmgContent(List<File> additionalContents) {
-        put("--mac-dmg-content", String.join(",", additionalContents.stream().map(File::getAbsolutePath).toList()));
-        return this;
+        return macDmgContentStrings(additionalContents.stream().map(File::getAbsolutePath).toList());
     }
 
     /**
@@ -656,9 +655,7 @@ public JpackageOptions macDmgContent(File... additionalContents) {
      * @return this map of options
      */
     public JpackageOptions macDmgContentPaths(List<Path> additionalContents) {
-        put("--mac-dmg-content", String.join(",",
-                additionalContents.stream().map(Path::toFile).map(File::getAbsolutePath).toList()));
-        return this;
+       return macDmgContentStrings(additionalContents.stream().map(Path::toFile).map(File::getAbsolutePath).toList());
     }
 
     /**
@@ -711,7 +708,7 @@ public JpackageOptions macEntitlements(File path) {
      * @return this map of options
      */
     public JpackageOptions macEntitlements(Path path) {
-        return macEntitlements(path.toFile());
+        return macEntitlements(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -969,7 +966,7 @@ public JpackageOptions modulePath(Path... paths) {
      * @return this map of options
      */
     public JpackageOptions modulePathPaths(List<Path> paths) {
-        return modulePath(paths.stream().map(Path::toFile).toList());
+        return modulePathStrings(paths.stream().map(Path::toFile).map(File::getAbsolutePath).toList());
     }
 
     /**
@@ -1031,7 +1028,7 @@ public JpackageOptions resourceDir(File path) {
      * @return this map of options
      */
     public JpackageOptions resourceDir(Path path) {
-        return resourceDir(path.toFile());
+        return resourceDir(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -1084,7 +1081,7 @@ public JpackageOptions runtimeImage(File path) {
      * @return this map of options
      */
     public JpackageOptions runtimeImage(Path path) {
-        return runtimeImage(path.toFile());
+        return runtimeImage(path.toFile().getAbsolutePath());
     }
 
     /**
@@ -1143,7 +1140,7 @@ public JpackageOptions temp(File path) {
      * @return this map of options
      */
     public JpackageOptions temp(Path path) {
-        return temp(path.toFile());
+        return temp(path.toFile().getAbsolutePath());
     }
 
     /**
diff --git a/src/test/java/rife/bld/operations/TestJlinkOperation.java b/src/test/java/rife/bld/operations/TestJlinkOperation.java
index a42d74f..afd8bf3 100644
--- a/src/test/java/rife/bld/operations/TestJlinkOperation.java
+++ b/src/test/java/rife/bld/operations/TestJlinkOperation.java
@@ -161,13 +161,13 @@ void testModulePath() {
         options.modulePath("foo");
         assertEquals("foo", options.get("--module-path"));
 
-        var barPath = Path.of("bar");
-        options.modulePath(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--module-path"));
+        var bar = Path.of("bar");
+        options = options.modulePath(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--module-path"));
 
-        var fooFile = new File("foo");
-        options.modulePath(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--module-path"));
+        var foo = new File("foo");
+        options = options.modulePath(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--module-path"));
     }
 
     @Test
@@ -184,13 +184,13 @@ void testOutput() {
         options.output("foo");
         assertEquals("foo", options.get("--output"));
 
-        var barPath = Path.of("bar");
-        options.output(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--output"));
+        var bar = Path.of("bar");
+        options = options.output(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--output"));
 
-        var fooFile = new File("foo");
-        options.output(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--output"));
+        var foo = new File("foo");
+        options = options.output(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--output"));
     }
 
     @Test
diff --git a/src/test/java/rife/bld/operations/TestJmodOperation.java b/src/test/java/rife/bld/operations/TestJmodOperation.java
index 54d79f8..ec26b2c 100644
--- a/src/test/java/rife/bld/operations/TestJmodOperation.java
+++ b/src/test/java/rife/bld/operations/TestJmodOperation.java
@@ -122,13 +122,13 @@ void testCmds() {
         var options = new JmodOptions().cmds("foo");
         assertEquals("foo", options.get("--cmds"));
 
-        var barPath = Path.of("bar");
-        options = options.cmds(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--cmds"));
+        var bar = Path.of("bar");
+        options = options.cmds(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--cmds"));
 
-        var fooFile = new File("foo");
-        options.cmds(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--cmds"));
+        var foo = new File("foo");
+        options.cmds(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--cmds"));
     }
 
     @Test
@@ -136,13 +136,13 @@ void testConfig() {
         var options = new JmodOptions().config("foo");
         assertEquals("foo", options.get("--config"));
 
-        var barPath = Path.of("bar");
-        options = options.config(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--config"));
+        var bar = Path.of("bar");
+        options = options.config(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--config"));
 
-        var fooFile = new File("foo");
-        options.config(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--config"));
+        var foo = new File("foo");
+        options = options.config(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--config"));
     }
 
     @Test
@@ -172,13 +172,13 @@ void testDir() {
         var options = new JmodOptions().dir("foo");
         assertEquals("foo", options.get("--dir"));
 
-        var barPath = Path.of("bar");
-        options = options.dir(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--dir"));
+        var bar = Path.of("bar");
+        options = options.dir(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--dir"));
 
-        var fooFile = new File("foo");
-        options.dir(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--dir"));
+        var foo = new File("foo");
+        options = options.dir(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--dir"));
     }
 
     @Test
@@ -222,13 +222,13 @@ void testHeaderFiles() {
         var options = new JmodOptions().headerFiles("foo");
         assertEquals("foo", options.get("--header-files"));
 
-        var barPath = Path.of("bar");
-        options = options.headerFiles(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--header-files"));
+        var bar = Path.of("bar");
+        options = options.headerFiles(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--header-files"));
 
-        var fooFile = new File("foo");
-        options.headerFiles(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--header-files"));
+        var foo = new File("foo");
+        options.headerFiles(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--header-files"));
     }
 
     @Test
@@ -243,13 +243,13 @@ void testJmodFile() {
         var op = new JmodOperation().jmodFile("foo");
         assertEquals("foo", op.jmodFile());
 
-        var barPath = Path.of("bar");
-        op = op.jmodFile(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), op.jmodFile());
+        var bar = Path.of("bar");
+        op = op.jmodFile(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), op.jmodFile());
 
-        var fooFile = new File("foo");
-        op.jmodFile(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), op.jmodFile());
+        var foo = new File("foo");
+        op.jmodFile(foo);
+        assertEquals(foo.getAbsolutePath(), op.jmodFile());
     }
 
     @Test
@@ -257,13 +257,13 @@ void testLegalNotices() {
         var options = new JmodOptions().legalNotices("foo");
         assertEquals("foo", options.get("--legal-notices"));
 
-        var barPath = Path.of("bar");
-        options = options.legalNotices(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--legal-notices"));
+        var bar = Path.of("bar");
+        options = options.legalNotices(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--legal-notices"));
 
-        var fooFile = new File("foo");
-        options.legalNotices(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--legal-notices"));
+        var foo = new File("foo");
+        options.legalNotices(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--legal-notices"));
     }
 
     @Test
@@ -271,13 +271,13 @@ void testLibs() {
         var options = new JmodOptions().libs("foo");
         assertEquals("foo", options.get("--libs"));
 
-        var barPath = Path.of("bar");
-        options = options.libs(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--libs"));
+        var bar = Path.of("bar");
+        options = options.libs(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--libs"));
 
-        var fooFile = new File("foo");
-        options.libs(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--libs"));
+        var foo = new File("foo");
+        options.libs(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--libs"));
     }
 
     @Test
@@ -285,13 +285,13 @@ void testManPages() {
         var options = new JmodOptions().manPages("foo");
         assertEquals("foo", options.get("--man-pages"));
 
-        var barPath = Path.of("bar");
-        options = options.manPages(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--man-pages"));
+        var bar = Path.of("bar");
+        options = options.manPages(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--man-pages"));
 
-        var fooFile = new File("foo");
-        options.manPages(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--man-pages"));
+        var foo = new File("foo");
+        options.manPages(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--man-pages"));
     }
 
     @Test
@@ -299,13 +299,13 @@ void testModulePath() {
         var options = new JmodOptions().modulePath("foo");
         assertEquals("foo", options.get("--module-path"));
 
-        var barPath = Path.of("bar");
-        options = options.modulePath(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--module-path"));
+        var bar = Path.of("bar");
+        options = options.modulePath(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--module-path"));
 
-        var fooFile = new File("foo");
-        options.modulePath(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--module-path"));
+        var foo = new File("foo");
+        options = options.modulePath(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--module-path"));
     }
 
     @Test
diff --git a/src/test/java/rife/bld/operations/TestJpackageOperation.java b/src/test/java/rife/bld/operations/TestJpackageOperation.java
index f81a822..699a6d0 100644
--- a/src/test/java/rife/bld/operations/TestJpackageOperation.java
+++ b/src/test/java/rife/bld/operations/TestJpackageOperation.java
@@ -15,6 +15,7 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.HashMap;
+import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.*;
 import static rife.bld.operations.JpackageOperation.Launcher;
@@ -32,22 +33,29 @@ public void tearDown() {
     @Test
     void testAddLauncher() {
         var op = new JpackageOperation();
+        var bar = Path.of("bar-path");
+        var foo = new File("foo/bar");
 
         var fooLauncher = new Launcher("foo-name", "foo-path");
-        var barPath = Path.of("bar-path");
-        var barLauncher = new Launcher("bar-name", barPath);
+        assertEquals("foo-name", fooLauncher.name());
+        assertEquals("foo-path", fooLauncher.path());
+
+        var barLauncher = new Launcher("bar-name", bar);
         assertEquals("bar-name", barLauncher.name());
-        assertEquals(barPath.toFile().getAbsolutePath(), barLauncher.path());
+        assertEquals(bar.toFile().getAbsolutePath(), barLauncher.path());
 
-        var fooFile = new File("foo/bar");
-        var foobarLauncher = new Launcher("foobar", fooFile);
+        var foobarLauncher = new Launcher("foobar", foo);
         assertEquals("foobar", foobarLauncher.name());
-        assertEquals(fooFile.getAbsolutePath(), foobarLauncher.path());
+        assertEquals(foo.getAbsolutePath(), foobarLauncher.path());
 
         op = op.addLauncher(fooLauncher);
-        assertTrue(op.launchers().contains(fooLauncher), "foo not found");
+        assertTrue(op.launchers().contains(fooLauncher), "foo launcher not found");
+
         op.addLauncher(barLauncher);
-        assertTrue(op.launchers().contains(barLauncher), "bar not found");
+        assertTrue(op.launchers().contains(barLauncher), "bar launcher not found");
+
+        op.addLauncher(foobarLauncher);
+        assertTrue(op.launchers().contains(fooLauncher), "foobar launcher not found");
     }
 
     @Test
@@ -55,13 +63,13 @@ void testAppImage() {
         var options = new JpackageOptions().appImage("foo");
         assertEquals("foo", options.get("--app-image"));
 
-        var barPath = Path.of("bar");
-        options.appImage(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--app-image"));
+        var bar = Path.of("bar");
+        options.appImage(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--app-image"));
 
-        var fooFile = new File("foo");
-        options = options.appImage(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--app-image"));
+        var foo = new File("foo");
+        options = options.appImage(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--app-image"));
     }
 
     @Test
@@ -264,30 +272,40 @@ void testDest() {
         var options = new JpackageOptions().dest("foo");
         assertEquals("foo", options.get("--dest"));
 
-        var barPath = Path.of("bar");
-        options = options.dest(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--dest"));
+        var bar = Path.of("bar");
+        options = options.dest(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--dest"));
 
-        var fooFile = new File("foo");
-        options.dest(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--dest"));
+        var foo = new File("foo");
+        options.dest(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--dest"));
     }
 
     @Test
     void testFileAssociations() {
         var options = new JpackageOptions().fileAssociations("foo", "bar");
-        assertEquals("foo,bar", options.get("--file-associations"));
-
-        var barPath = Path.of("bar");
-        var fooPath = Path.of("foo");
-        options = options.fileAssociations(barPath, fooPath);
-        assertEquals(barPath.toFile().getAbsolutePath() + ',' + fooPath.toFile().getAbsolutePath(),
-                options.get("--file-associations"));
-
-        var fooFile = new File("foo");
-        var barFile = new File("bar");
-        options.fileAssociations(fooFile, barFile);
-        assertEquals(fooFile.getAbsolutePath() + ',' + barFile.getAbsolutePath(), options.get("--file-associations"));
+        assertEquals("foo,bar", options.get("--file-associations"), "String...");
+
+        var foo = new File("foo");
+        var bar = new File("bar");
+        options = options.fileAssociations(foo.toPath(), bar.toPath());
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--file-associations"),
+                "Path...");
+
+        options.fileAssociations(foo, bar);
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--file-associations"),
+                "File...");
+
+        options.fileAssociations(List.of(foo, bar));
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--file-associations"),
+                "List(File...)");
+
+        options.fileAssociationsPaths(List.of(foo.toPath(), bar.toPath()));
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--file-associations"),
+                "List(Path...)");
+
+        options.fileAssociationsStrings(List.of("foo", "bar"));
+        assertEquals("foo,bar", options.get("--file-associations"), "List(String...)");
     }
 
     @Test
@@ -302,13 +320,13 @@ void testIcon() {
         var options = new JpackageOptions().icon("foo");
         assertEquals("foo", options.get("--icon"));
 
-        var barPath = Path.of("bar");
-        options = options.icon(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--icon"));
+        var bar = Path.of("bar");
+        options = options.icon(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--icon"));
 
-        var fooFile = new File("foo");
-        options.icon(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--icon"));
+        var foo = new File("foo");
+        options.icon(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--icon"));
     }
 
     @Test
@@ -318,13 +336,13 @@ void testInput() {
         options.input("foo");
         assertEquals("foo", options.get("--input"));
 
-        var barPath = Path.of("bar");
-        options.input(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--input"));
+        var bar = Path.of("bar");
+        options.input(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--input"));
 
-        var fooFile = new File("foo");
-        options.input(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--input"));
+        var foo = new File("foo");
+        options = options.input(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--input"));
     }
 
     @Test
@@ -332,13 +350,13 @@ void testInstallDir() {
         var options = new JpackageOptions().installDir("foo");
         assertEquals("foo", options.get("--install-dir"));
 
-        var barPath = Path.of("bar");
-        options = options.installDir(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--install-dir"));
+        var bar = Path.of("bar");
+        options = options.installDir(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--install-dir"));
 
-        var fooFile = new File("foo");
-        options.installDir(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--install-dir"));
+        var foo = new File("foo");
+        options.installDir(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--install-dir"));
     }
 
     @Test
@@ -346,31 +364,40 @@ void testLicenseFile() {
         var options = new JpackageOptions().licenseFile("foo");
         assertEquals("foo", options.get("--license-file"));
 
-        var barPath = Path.of("bar");
-        options = options.licenseFile(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--license-file"));
+        var bar = Path.of("bar");
+        options = options.licenseFile(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--license-file"));
 
-        var fooFile = new File("foo");
-        options.licenseFile(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--license-file"));
+        var foo = new File("foo");
+        options.licenseFile(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--license-file"));
     }
 
     @Test
     void testMacDmgContent() {
         var options = new JpackageOptions().macDmgContent("foo", "bar");
-        assertEquals("foo,bar", options.get("--mac-dmg-content"));
+        assertEquals("foo,bar", options.get("--mac-dmg-content"), "String...");
+
+        var foo = new File("foo");
+        var bar = new File("bar");
+        options.macDmgContent(foo, bar);
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--mac-dmg-content"),
+                "File...");
+
+        options = options.macDmgContent(foo.toPath(), bar.toPath());
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--mac-dmg-content"),
+                "Path...");
 
-        var barPath = Path.of("bar");
-        var fooPath = Path.of("foo");
+        options.macDmgContent(List.of(foo, bar));
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--mac-dmg-content"),
+                "List(File...)");
 
-        options = options.macDmgContent(barPath, fooPath);
-        assertEquals(barPath.toFile().getAbsolutePath() + ',' + fooPath.toFile().getAbsolutePath(),
-                options.get("--mac-dmg-content"));
+        options.macDmgContentPaths(List.of(foo.toPath(), bar.toPath()));
+        assertEquals(foo.getAbsolutePath() + ',' + bar.getAbsolutePath(), options.get("--mac-dmg-content"),
+                "List(Path...)");
 
-        var fooFile = new File("foo");
-        var barFile = new File("bar");
-        options.macDmgContent(fooFile, barFile);
-        assertEquals(fooFile.getAbsolutePath() + ',' + barFile.getAbsolutePath(), options.get("--mac-dmg-content"));
+        options.macDmgContentStrings(List.of("foo", "bar"));
+        assertEquals("foo,bar", options.get("--mac-dmg-content"), "List(String...)");
     }
 
     @Test
@@ -378,13 +405,13 @@ void testMacEntitlements() {
         var options = new JpackageOptions().macEntitlements("foo");
         assertEquals("foo", options.get("--mac-entitlements"));
 
-        var barPath = Path.of("bar");
-        options = options.macEntitlements(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--mac-entitlements"));
+        var bar = Path.of("bar");
+        options = options.macEntitlements(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--mac-entitlements"));
 
-        var fooFile = new File("foo");
-        options.macEntitlements(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--mac-entitlements"));
+        var foo = new File("foo");
+        options.macEntitlements(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--mac-entitlements"));
     }
 
     @Test
@@ -401,13 +428,13 @@ void testModulePath() {
         var options = new JpackageOptions().modulePath("foo");
         assertEquals("foo", options.get("--module-path"));
 
-        var barPath = Path.of("bar");
-        options = options.modulePath(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--module-path"));
+        var bar = Path.of("bar");
+        options = options.modulePath(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--module-path"));
 
-        var fooFile = new File("foo");
-        options.modulePath(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--module-path"));
+        var foo = new File("foo");
+        options.modulePath(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--module-path"));
     }
 
     @Test
@@ -423,13 +450,13 @@ void testResourceDir() {
         var options = new JpackageOptions().resourceDir("foo");
         assertEquals("foo", options.get("--resource-dir"));
 
-        var barPath = Path.of("bar");
-        options = options.resourceDir(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--resource-dir"));
+        var bar = Path.of("bar");
+        options = options.resourceDir(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--resource-dir"));
 
-        var fooFile = new File("foo");
-        options.resourceDir(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--resource-dir"));
+        var foo = new File("foo");
+        options.resourceDir(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--resource-dir"));
     }
 
     @Test
@@ -437,13 +464,13 @@ void testRuntimeImage() {
         var options = new JpackageOptions().runtimeImage("foo");
         assertEquals("foo", options.get("--runtime-image"));
 
-        var barPath = Path.of("bar");
-        options = options.runtimeImage(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--runtime-image"));
+        var bar = Path.of("bar");
+        options = options.runtimeImage(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--runtime-image"));
 
-        var fooFile = new File("foo");
-        options.runtimeImage(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--runtime-image"));
+        var foo = new File("foo");
+        options.runtimeImage(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--runtime-image"));
     }
 
     @Test
@@ -451,13 +478,13 @@ void testTemp() {
         var options = new JpackageOptions().temp("foo");
         assertEquals("foo", options.get("--temp"));
 
-        var barPath = Path.of("bar");
-        options = options.temp(barPath);
-        assertEquals(barPath.toFile().getAbsolutePath(), options.get("--temp"));
+        var bar = Path.of("bar");
+        options = options.temp(bar);
+        assertEquals(bar.toFile().getAbsolutePath(), options.get("--temp"));
 
-        var fooFile = new File("foo");
-        options.temp(fooFile);
-        assertEquals(fooFile.getAbsolutePath(), options.get("--temp"));
+        var foo = new File("foo");
+        options.temp(foo);
+        assertEquals(foo.getAbsolutePath(), options.get("--temp"));
     }
 
     @Test