Convert ExecuTorchRuntime, ExecutorchRuntimeException, EValue from Java to Kotlin (pytorch#19788)

Differential Revision: D106413930

Pull Request resolved: pytorch#19788

Author: kirklandsign

extension/android/BUCK

@@ -9,9 +9,9 @@ non_fbcode_target(_kind = fb_android_library,
     required_for_source_only_abi = True,
     srcs = [
         "executorch_android/src/main/java/org/pytorch/executorch/DType.kt",
-        "executorch_android/src/main/java/org/pytorch/executorch/EValue.java",
-        "executorch_android/src/main/java/org/pytorch/executorch/ExecuTorchRuntime.java",
-        "executorch_android/src/main/java/org/pytorch/executorch/ExecutorchRuntimeException.java",
+        "executorch_android/src/main/java/org/pytorch/executorch/EValue.kt",
+        "executorch_android/src/main/java/org/pytorch/executorch/ExecuTorchRuntime.kt",
+        "executorch_android/src/main/java/org/pytorch/executorch/ExecutorchRuntimeException.kt",
         "executorch_android/src/main/java/org/pytorch/executorch/MethodMetadata.kt",
         "executorch_android/src/main/java/org/pytorch/executorch/Module.java",
         "executorch_android/src/main/java/org/pytorch/executorch/Tensor.java",

extension/android/executorch_android/src/androidTest/java/org/pytorch/executorch/ModuleInstrumentationTest.kt

@@ -94,7 +94,7 @@ class ModuleInstrumentationTest {
           }
       Assert.assertEquals(
           ExecutorchRuntimeException.INVALID_ARGUMENT,
-          exception.getErrorCode(),
+          exception.errorCode,
       )
     } finally {
       module.destroy()