diff --git a/compiler/src/dotty/tools/dotc/core/classfile/ClassfileParser.scala b/compiler/src/dotty/tools/dotc/core/classfile/ClassfileParser.scala
index 7909413e36fb..55b2f2ae4c8f 100644
--- a/compiler/src/dotty/tools/dotc/core/classfile/ClassfileParser.scala
+++ b/compiler/src/dotty/tools/dotc/core/classfile/ClassfileParser.scala
@@ -161,7 +161,7 @@ class ClassfileParser(
 
       for (i <- 0 until in.nextChar) parseMember(method = false)
       for (i <- 0 until in.nextChar) parseMember(method = true)
-      classInfo = cook.apply(parseAttributes(classRoot.symbol, classInfo))
+      classInfo = parseAttributes(classRoot.symbol, classInfo)
       if (isAnnotation) addAnnotationConstructor(classInfo)
 
       val companionClassMethod = ctx.synthesizeCompanionMethod(nme.COMPANION_CLASS_METHOD, classRoot, moduleRoot)
@@ -261,7 +261,7 @@ class ClassfileParser(
           addConstructorTypeParams(denot)
         }
 
-        denot.info = cook.apply(pool.getType(in.nextChar))
+        denot.info = pool.getType(in.nextChar)
         if (isEnum) denot.info = ConstantType(Constant(sym))
         if (isConstructor) normalizeConstructorParams()
         setPrivateWithin(denot, jflags)
@@ -625,7 +625,8 @@ class ClassfileParser(
     for (i <- 0 until in.nextChar) {
       parseAttribute()
     }
-    newType
+
+    cook.apply(newType)
   }
 
   /** Add synthetic constructor(s) and potentially also default getters which
diff --git a/compiler/test/dotty/tools/dotc/CompilationTests.scala b/compiler/test/dotty/tools/dotc/CompilationTests.scala
index e79121c7fe6e..f382d89f3946 100644
--- a/compiler/test/dotty/tools/dotc/CompilationTests.scala
+++ b/compiler/test/dotty/tools/dotc/CompilationTests.scala
@@ -69,7 +69,6 @@ class CompilationTests extends ParallelTesting {
       ),
       scala2Mode
     ) +
-    compileFilesInDir("../tests/pos-special/i3273", defaultOptions) +
     compileFilesInDir("../tests/pos-special/spec-t5545", defaultOptions) +
     compileFilesInDir("../tests/pos-special/strawman-collections", defaultOptions) +
     compileFile("../scala2-library/src/library/scala/collection/immutable/IndexedSeq.scala", defaultOptions) +
@@ -110,6 +109,7 @@ class CompilationTests extends ParallelTesting {
     implicit val testGroup: TestGroup = TestGroup("posTwice")
     compileFile("../tests/pos/Labels.scala", defaultOptions) +
     compileFilesInDir("../tests/pos-java-interop", defaultOptions) +
+    compileFilesInDir("../tests/pos-java-interop-separate", defaultOptions) +
     compileFile("../tests/pos/t2168.scala", defaultOptions) +
     compileFile("../tests/pos/erasure.scala", defaultOptions) +
     compileFile("../tests/pos/Coder.scala", defaultOptions) +
diff --git a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
index 48dcd42a96eb..062eb929e3e8 100644
--- a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
+++ b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
@@ -376,7 +376,10 @@ trait ParallelTesting extends RunnerOrchestration { self =>
 
       // Compile with a try to catch any StackTrace generated by the compiler:
       try {
-        driver.process(allArgs ++ files.map(_.getAbsolutePath), reporter = reporter)
+        // If a test contains a Java file that cannot be parsed by Dotty's Java source parser, its
+        // name must contain the string "JAVA_ONLY".
+        val dottyFiles = files.filterNot(_.getName.contains("JAVA_ONLY")).map(_.getAbsolutePath)
+        driver.process(allArgs ++ dottyFiles, reporter = reporter)
 
         val javaFiles = files.filter(_.getName.endsWith(".java")).map(_.getAbsolutePath)
         val javaErrors = compileWithJavac(javaFiles)
diff --git a/tests/pos-special/i3273/test/Bar_1.java b/tests/pos-java-interop-separate/i3273/Bar_1.java
similarity index 100%
rename from tests/pos-special/i3273/test/Bar_1.java
rename to tests/pos-java-interop-separate/i3273/Bar_1.java
diff --git a/tests/pos-special/i3273/test/client_2.scala b/tests/pos-java-interop-separate/i3273/client_2.scala
similarity index 100%
rename from tests/pos-special/i3273/test/client_2.scala
rename to tests/pos-java-interop-separate/i3273/client_2.scala
diff --git a/tests/pos-java-interop-separate/i3533/Test_2.scala b/tests/pos-java-interop-separate/i3533/Test_2.scala
new file mode 100644
index 000000000000..02819f8aac2a
--- /dev/null
+++ b/tests/pos-java-interop-separate/i3533/Test_2.scala
@@ -0,0 +1,3 @@
+object Test {
+  TryMe_JAVA_ONLY_1.ifYouCan(list => list.size())
+}
diff --git a/tests/pos-java-interop-separate/i3533/TryMe_JAVA_ONLY_1.java b/tests/pos-java-interop-separate/i3533/TryMe_JAVA_ONLY_1.java
new file mode 100644
index 000000000000..14fbbd32e777
--- /dev/null
+++ b/tests/pos-java-interop-separate/i3533/TryMe_JAVA_ONLY_1.java
@@ -0,0 +1,6 @@
+import java.util.function.Function;
+
+public class TryMe_JAVA_ONLY_1 {
+  public static void ifYouCan(Function<java.util.List, Integer> f) {
+  }
+}