[Java Controller API] Fix Length of Arrays Returned by CameraRecognitionObject.getColors() (cyberbotics#6564)

* fix CameraRecognitionObject.getColors

* fix getColor implementation

* update to conform more closely to existing API

* update changelog

Author: CoolSpy3

docs/reference/changelog-r2024.md

@@ -11,3 +11,5 @@ Released on December **th, 2023.
   - Bug Fixes
     - Fixed error message on Windows when `libssl-3-x64.dll` was added to `PATH` ([#6553](https://github.com/cyberbotics/webots/pull/6553)).
     - Fixed length of arrays returned by `getPose()` in Java ([#6556](https://github.com/cyberbotics/webots/pull/6556)).
+    - Fixed length of arrays returned by `CameraRecognitionObject.getColors()` in Java ([#6564](https://github.com/cyberbotics/webots/pull/6564))
+    

src/controller/java/controller.i

@@ -85,11 +85,15 @@ using namespace std;
     $result = SWIG_JavaArrayOutDouble(jenv, $1, 9);
   else if (test == "getPose")
     $result = SWIG_JavaArrayOutDouble(jenv, $1, 16);
-  else if (test != "getLookupTable")
+  else if (test != "colors" && test != "getLookupTable")
     $result = SWIG_JavaArrayOutDouble(jenv, $1, 3);
 }
 %apply double[] {double *};
 
+%typemap(out) double *colors {
+  $result = SWIG_JavaArrayOutDouble(jenv, (double *) $1, arg1->number_of_colors*3);
+}
+
 %typemap(out) const double *getLookupTable {
   $result = SWIG_JavaArrayOutDouble(jenv, (double *) $1, arg1->getLookupTableSize()*3);
 }