Converter tests:

Change test data files extension to "java"

generators/src/org/jetbrains/jet/generators/tests/GenerateTests.kt

@@ -418,11 +418,11 @@ fun main(args: Array<String>) {
 
     testGroup("j2k/tests/test", "j2k/tests/testData") {
         testClass(javaClass<AbstractJavaToKotlinConverterPluginTest>()) {
-            model("ast", extension = "jav")
+            model("ast", extension = "java")
         }
 
         testClass(javaClass<AbstractJavaToKotlinConverterBasicTest>()) {
-            model("ast", extension = "jav")
+            model("ast", extension = "java")
         }
     }
 }

j2k/tests/test/org/jetbrains/jet/j2k/test/AbstractJavaToKotlinConverterTest.kt

@@ -47,7 +47,7 @@ public abstract class AbstractJavaToKotlinConverterTest(val kotlinFileExtension:
     protected fun doTest(javaPath: String) {
         val project = LightPlatformTestCase.getProject()!!
         val converter = Converter(project, settings)
-        val kotlinPath = javaPath.replace(".jav", ".$kotlinFileExtension")
+        val kotlinPath = javaPath.replace(".java", ".$kotlinFileExtension")
         val kotlinFile = File(kotlinPath)
         if (!kotlinFile.exists()) {
             FileUtil.writeToFile(kotlinFile, "")