[java] raises language level to Java 9

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterNestedScope.java

@@ -46,7 +46,7 @@ public class Main {
       long sum = 0L;
       for (Map.Entry<String, List<String>> e : strings.entrySet()) {
           if (!e.getKey().isEmpty()) {
-              long count = e.getValue().stream().filter(new Predicate<String>() {
+              long count = e.getValue().stream().filter(new Predicate<>() {
                   // we're inside anonymous class
                   @Override
                   public boolean test(String s) {

java/java-tests/testData/refactoring/inplaceIntroduceConstant/correctConstantPosition.java

@@ -14,5 +14,5 @@ public class Res {
                 System.out.println(param);
             }
         });
-      }
+    }
 }

java/java-tests/testData/refactoring/inplaceIntroduceConstant/correctConstantPosition_after.java

@@ -1,6 +1,6 @@
 public class Res {
 
-    public static final Res.R<String, Object> R = new R<String, Object>() {
+    public static final Res.R<String, Object> R = new R<>() {
         final String param = "";
 
         @Override
@@ -17,5 +17,5 @@ public class Res {
 
     private void validateStructuresCookie(Res cookie) {
         cookie.bar(<caret>R);
-      }
+    }
 }