Do not add import statement for java.lang classes when replacing fqn with import (IDEA-134529)

java/java-tests/testSrc/com/intellij/codeInsight/intention/AddImportActionTest.groovy

@@ -289,7 +289,33 @@ class Test {
     assert !myFixture.filterAvailableIntentions("Import class")
   }
 
-  public void "test allow to add import from javadoc"() {
+    public void "test allow to add import from javadoc"() {
+    myFixture.configureByText 'a.java', '''
+class Test {
+
+  /**
+   * {@link java.util.Ma<caret>p}
+   */
+  void run() {
+  }
+}
+'''
+    reimportClass()
+    myFixture.checkResult '''\
+import java.util.Map;
+
+class Test {
+
+  /**
+   * {@link Map}
+   */
+  void run() {
+  }
+}
+'''
+  }
+
+  public void "test do not add import for default package"() {
     myFixture.configureByText 'a.java', '''
 class Test {
 
@@ -301,9 +327,7 @@ class Test {
 }
 '''
     reimportClass()
-    myFixture.checkResult '''\
-import java.lang.Math;
-
+    myFixture.checkResult '''
 class Test {
 
   /**

plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/ImportUtils.java

@@ -60,6 +60,9 @@ public final class ImportUtils {
     }
     final String containingPackageName = javaFile.getPackageName();
     @NonNls final String packageName = ClassUtil.extractPackageName(qualifiedName);
+    if (CommonClassNames.DEFAULT_PACKAGE.equals(packageName)) {
+      return;
+    }
     if (containingPackageName.equals(packageName) || importList.findSingleClassImportStatement(qualifiedName) != null) {
       return;
     }