suggest to extend class from Throwable when it participates in throw statement (IDEA-118215)

java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java

@@ -2421,6 +2421,11 @@ public class HighlightUtil extends HighlightUtilBase {
           QuickFixAction.registerQuickFixAction(highlightInfo, QUICK_FIX_FACTORY.createAddTypeCastFix(throwable, (PsiExpression)context));
         }
       }
+
+      final PsiClass aClass = PsiUtil.resolveClassInClassTypeOnly(type);
+      if (aClass != null) {
+        QuickFixAction.registerQuickFixAction(highlightInfo, QUICK_FIX_FACTORY.createExtendsListFix(aClass, throwable, true));
+      }
       return highlightInfo;
     }
     return null;

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/makeExtendsThrowable/afterThrowsNew.java

@@ -0,0 +1,8 @@
+// "Make 'C' extend 'java.lang.Throwable'" "true"
+
+class C extends Throwable {}
+class Main {
+  public static void main(String[] args) {
+    throw new <caret>C();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/makeExtendsThrowable/beforeThrowsNew.java

@@ -0,0 +1,8 @@
+// "Make 'C' extend 'java.lang.Throwable'" "true"
+
+class C {}
+class Main {
+  public static void main(String[] args) {
+    throw new <caret>C();
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/quickFix/MakeExtendsThrowableTest.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2000-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.codeInsight.daemon.quickFix;
+
+public class MakeExtendsThrowableTest extends LightQuickFix15TestCase {
+  public void test() throws Exception { doAllTests(); }
+
+  @Override
+  protected String getBasePath() {
+    return "/codeInsight/daemonCodeAnalyzer/quickFix/makeExtendsThrowable";
+  }
+}
+