src/jdk.jartool/share/classes/sun/tools/jar/GNUStyleOptions.java

@@ -25,10 +25,11 @@
 
 package sun.tools.jar;
 
 import java.io.File;
 import java.io.PrintStream;
+import java.io.PrintWriter;
 import java.lang.module.ModuleFinder;
 import java.lang.module.ModuleDescriptor.Version;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.regex.Pattern;

@@ -287,11 +288,11 @@
             }
         }
         throw new BadArgs("error.unrecognized.option", name).showUsage(true);
     }
 
-    static void printHelp(PrintStream out) {
+    static void printHelp(PrintWriter out) {
         out.format("%s%n", Main.getMsg("main.help.preopt"));
         for (OptionType type : OptionType.values()) {
             boolean typeHeadingWritten = false;
 
             for (Option o : recognizedOptions) {

@@ -310,18 +311,18 @@
             }
         }
         out.format("%n%s%n%n", Main.getMsg("main.help.postopt"));
     }
 
-    static void printCompatHelp(PrintStream out) {
+    static void printCompatHelp(PrintWriter out) {
         out.format("%s%n", Main.getMsg("usage.compat"));
     }
 
-    static void printUsageSummary(PrintStream out) {
+    static void printUsageSummary(PrintWriter out) {
         out.format("%s%n", Main.getMsg("main.usage.summary"));
         out.format("%s%n", Main.getMsg("main.usage.summary.try"));
     }
 
-    static void printVersion(PrintStream out) {
+    static void printVersion(PrintWriter out) {
         out.format("%s %s%n", "jar", System.getProperty("java.version"));
     }
 }