[Extract Method] generate method with newline between braces, since otherwise with enabled "Keep simple methods in one line" formatter will keep extracted method in one line

java/java-psi-impl/src/com/intellij/psi/impl/PsiElementFactoryImpl.java

@@ -251,7 +251,7 @@ public class PsiElementFactoryImpl extends PsiJavaParserFacadeImpl implements Ps
     }
 
     final String canonicalText = returnType.getCanonicalText(true);
-    final PsiJavaFile aFile = createDummyJavaFile("class _Dummy_ { public " + canonicalText + " " + name + "() {} }");
+    final PsiJavaFile aFile = createDummyJavaFile("class _Dummy_ { public " + canonicalText + " " + name + "() {\n} }");
     final PsiClass[] classes = aFile.getClasses();
     if (classes.length < 1) {
       throw new IncorrectOperationException("Class was not created. Method name: " + name + "; return type: " + canonicalText);

java/java-tests/testData/refactoring/extractMethod/SimpleMethodsInOneLine.java

@@ -0,0 +1,8 @@
+public class NewTestXl {
+
+    public static void main(String[] args) {
+        int b = <selection>100 + 1222</selection>;
+        System.out.println("ASfsdf");
+    }
+
+}

java/java-tests/testData/refactoring/extractMethod/SimpleMethodsInOneLine_after.java

@@ -0,0 +1,12 @@
+public class NewTestXl {
+
+    public static void main(String[] args) {
+        int b = newMethod();
+        System.out.println("ASfsdf");
+    }
+
+    private static int newMethod() {
+        return 100 + 1222;
+    }
+
+}

java/java-tests/testSrc/com/intellij/refactoring/ExtractMethodTest.java

@@ -762,6 +762,13 @@ public class ExtractMethodTest extends LightCodeInsightTestCase {
   public void testTargetAnonymous() throws Exception {
     doTest();
   }
+  
+  public void testSimpleMethodsInOneLine() throws Exception {
+    CodeStyleSettings settings = CodeStyleSettingsManager.getSettings(getProject());
+    CommonCodeStyleSettings javaSettings = settings.getCommonSettings(JavaLanguage.INSTANCE);
+    javaSettings.KEEP_SIMPLE_METHODS_IN_ONE_LINE = true;
+    doTest();
+  }
 
   public void testExtractUnresolvedLambdaParameter() throws Exception {
     doTest();