ensure class added to the throws list is visible outside of method

IDEA-187595

java/java-psi-api/src/com/intellij/psi/util/PsiUtil.java

@@ -192,7 +192,11 @@ public final class PsiUtil extends PsiUtilCore {
       ref = factory.createReferenceElementByFQClassName(exceptionName, method.getResolveScope());
     }
     else {
-      PsiClassType type = factory.createType(exceptionClass);
+      PsiClass superClass = exceptionClass.getSuperClass();
+      while (superClass != null && isLocalOrAnonymousClass(superClass)) {
+        superClass = superClass.getSuperClass();
+      }
+      PsiClassType type = factory.createType(superClass != null ? superClass : exceptionClass);
       ref = factory.createReferenceElementByType(type);
     }
     throwsList.add(ref);

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addToThrows/afterLocalClass.java

@@ -0,0 +1,13 @@
+// "Add exception to method signature" "true"
+
+class C {
+  interface I { }
+
+  public void localException() throws Exception {
+
+    class Ex extends Exception { }
+    class LocalException extends Ex implements I { }
+
+    throw new LocalException();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/addToThrows/beforeLocalClass.java

@@ -0,0 +1,13 @@
+// "Add exception to method signature" "true"
+
+class C {
+  interface I { }
+
+  public void localException() {
+
+    class Ex extends Exception { }
+    class LocalException extends Ex implements I { }
+
+    throw new LocalE<caret>xception();
+  }
+}