8003280: Add lambda tests

Turn on lambda expression, method reference and default method support

Reviewed-by: jjg

langtools/test/tools/javac/lambda/funcInterfaces/LambdaTest1_neg3.java

@@ -0,0 +1,19 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *   This test is to verify mis-use of capturing local variable within lambda expression
+ * @compile/fail/ref=LambdaTest1_neg3.out -XDrawDiagnostics LambdaTest1_neg3.java
+ */
+
+public class LambdaTest1_neg3 {
+    void method() {
+        int n = 2; //effectively final variable
+        ((Runnable)
+            ()-> {
+                int n2 = n; //inside lambda accessing effectively final variable;
+            }
+        ).run();
+        n++; //compile error if n is modified
+    }
+}