test/jdk/tools/jpackage/helpers/JPackageHelper.java

*** 486,499 ****
                  // "-Djnlp.Prop1=\\\"Some \\\\\\\"Value\\\\\\\" 1\\\" -Djnlp.Prop2=\\\"Some Value 2\\\""
                  switch (code) {
                      case '"':
                          // " -> \" -> \\\"
                          if (i == 0 || in.codePointAt(i - 1) != '\\') {
-                             if (!toolProvider && isWindows()) {
-                                 sb.appendCodePoint('\\');
-                                 sb.appendCodePoint('\\');
-                             }
                              sb.appendCodePoint('\\');
                              sb.appendCodePoint(code);
                          }
                          break;
                      case '\\':
--- 486,495 ----
*** 509,521 ****
                              } else {
                                  sb.appendCodePoint('\\');
                                  sb.appendCodePoint(code);
                              }
                          } else {
-                             if (isWindows()) {
-                                 sb.appendCodePoint('\\');
-                             }
                              sb.appendCodePoint(code);
                          }
                          break;
                      default:
                          sb.appendCodePoint(code);
--- 505,514 ----