Getting error while trying to build javarosa using IntelliJ IDEA

neal0892 · July 13, 2019, 7:35pm

I am getting the following errors when I trying to run the gradle task build .I have my encoding set as UTF -8 .Is there something specific to this compileJava that I am missing ?

Task :compileJava FAILED
D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\model\Constants.java:23: error: unmappable character (0x9D) for encoding windows-1252

â€œint enumâ€? fields.
^
D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\CodeTimer.java:37: error: unmappable character (0x9D) for encoding windows-1252
- @param operation the name of the operation, such as â€œparsing formâ€?
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:130: error: illegal character: '\u201d'
  double Î”Î» = toRadians(p1.longitude - p2.longitude);
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:130: error: illegal character: '\u00bb'
  double Î”Î» = toRadians(p1.longitude - p2.longitude);
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:130: error: not a statement
  double Î”Î» = toRadians(p1.longitude - p2.longitude);
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:131: error: illegal character: '\u2020'
  double Ï†1 = toRadians(p1.latitude);
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:132: error: illegal character: '\u2020'
  double Ï†2 = toRadians(p2.latitude);
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u2020'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u2020'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u2020'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u2020'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u201d'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: illegal character: '\u00bb'
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^
  D:\ODK_OS\javarosa\src\main\java\org\javarosa\core\util\GeoUtils.java:133: error: not a statement
  return acos(sin(Ï†1) * sin(Ï†2) + cos(Ï†1) * cos(Ï†2) * cos(Î”Î»)) * EARTH_EQUATORIAL_RADIUS_METERS;
  ^

LN · July 15, 2019, 2:34pm

Hi @neal0892! The error message says "for encoding windows-1252" so that suggests to me that the system-level encoding is not UTF-8.

Could you try changing it either through the GUI or through the command line and see if that helps?

neal0892 · July 15, 2019, 6:00pm

Hi @LN Thank you for the reply.
I am still receiving the error.I think there is something peculiar to the compileJava Task in gradle build file of javarosa.
For example, It is giving me error for the greek letters in the following lines in the GeoUtils.java file:
private static double distanceBetween(LatLong p1, LatLong p2) {
double Δλ = toRadians(p1.longitude - p2.longitude);
double φ1 = toRadians(p1.latitude);
double φ2 = toRadians(p2.latitude);
But If I copy same lines to a different project,and do a normal compile , it runs without errors.
I suspect something in the task compileTask that is overriding the encoding ?

LN · July 16, 2019, 4:23am

That's very strange indeed. I don't have access to a Windows dev environment to try things. Have you explored any of the ideas at https://gist.github.com/rponte/d660919434d094bbd35a1aabf7ef1bf0?

neal0892 · July 18, 2019, 10:17am

Hey @LN,
Thanks....!!
Check this out.
BUILD SUCCESSFUL in 0s
1 actionable task: 1 executed
3:43:58 PM: Task execution finished.

Explanation:
When not setting the compiler encoding option explicitly, the problem you can run into is, that the Java compiler uses a different file encoding (in Gradle's case the system's default encoding) than the source code files are encoding in.
It happened to me that I had my Java code files encoded in UTF-8, Intellij IDEA compiling with UTF-8 during development (simply because it's faster), but Gradle compiling with the platform default encoding (e.g. Cp1252).

LN · July 18, 2019, 3:46pm

That's great, @neal0892! How about submitting a pull request to set the encoding in the gradle file so that others don't run into these issues? You can learn more about submitting a pull request at https://github.com/opendatakit/javarosa/blob/master/CONTRIBUTING.md

neal0892 · July 18, 2019, 7:44pm

Sure @LN.Pull Request raised.