diff -r 274a1ea904c8 -r fd44df5e3bc3 make/bsd/makefiles/rules.make
--- a/make/bsd/makefiles/rules.make	Wed Oct 14 16:43:13 2020 +0800
+++ b/make/bsd/makefiles/rules.make	Wed Oct 14 17:44:48 2020 +0800
@@ -126,8 +126,8 @@
 RUN.JAR$(MAKE_VERBOSE) += >/dev/null
 
 # Settings for javac
-BOOT_SOURCE_LANGUAGE_VERSION = 6
-BOOT_TARGET_CLASS_VERSION = 6
+BOOT_SOURCE_LANGUAGE_VERSION = 7
+BOOT_TARGET_CLASS_VERSION = 7
 JAVAC_FLAGS = -g -encoding ascii
 BOOTSTRAP_JAVAC_FLAGS = $(JAVAC_FLAGS) -source $(BOOT_SOURCE_LANGUAGE_VERSION) -target $(BOOT_TARGET_CLASS_VERSION)