src/jdk.jpackage/share/classes/jdk/jpackage/internal/DeployParams.java

@@ -50,11 +50,11 @@
  */
 public class DeployParams {
 
     final List<RelativeFileSet> resources = new ArrayList<>();
 
-    String targetFormat = null; // means app-image
+    String targetFormat = null; // means default type for this platform
 
     File outdir = null;
 
     // raw arguments to the bundler
     Map<String, ? super Object> bundlerArguments = new LinkedHashMap<>();

@@ -195,14 +195,14 @@
                 Arguments.CLIOptions.PREDEFINED_RUNTIME_IMAGE.getId()) != null);
         boolean hasInput = (bundlerArguments.get(
                 Arguments.CLIOptions.INPUT.getId()) != null);
         boolean hasModulePath = (bundlerArguments.get(
                 Arguments.CLIOptions.MODULE_PATH.getId()) != null);
-        boolean runtimeInstaller = targetFormat != null &&
+        boolean runtimeInstaller = !isTargetAppImage() &&
                 !hasAppImage && !hasModule && !hasMain && hasRuntimeImage;
 
-        if (targetFormat == null) {
+        if (isTargetAppImage()) {
             // Module application requires --runtime-image or --module-path
             if (hasModule) {
                 if (!hasModulePath && !hasRuntimeImage) {
                     throw new PackagerException("ERR_MissingArgument",
                             "--runtime-image or --module-path");

@@ -283,10 +283,14 @@
 
     String getTargetFormat() {
         return targetFormat;
     }
 
+    boolean isTargetAppImage() {
+        return ("app-image".equals(targetFormat));
+    }
+
     private static final Set<String> multi_args = new TreeSet<>(Arrays.asList(
             StandardBundlerParam.JAVA_OPTIONS.getID(),
             StandardBundlerParam.ARGUMENTS.getID(),
             StandardBundlerParam.MODULE_PATH.getID(),
             StandardBundlerParam.ADD_MODULES.getID(),