diff -r 4e981ab5986a src/hotspot/share/runtime/globals.hpp
--- a/src/hotspot/share/runtime/globals.hpp	Thu May 09 08:44:55 2019 +0200
+++ b/src/hotspot/share/runtime/globals.hpp	Wed Aug 14 08:50:48 2019 +0200
@@ -643,7 +643,7 @@
   product(bool, OmitStackTraceInFastThrow, true,                            \
           "Omit backtraces for some 'hot' exceptions in optimized code")    \
                                                                             \
-  manageable(bool, ShowCodeDetailsInExceptionMessages, false,               \
+  manageable(bool, ShowCodeDetailsInExceptionMessages, true,                \
           "Show exception messages from RuntimeExceptions that contain "    \
           "snippets of the failing code. Disable this to improve privacy.") \
                                                                             \
diff -r 4e981ab5986a test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/SuppressMessagesTest.java
--- a/test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/SuppressMessagesTest.java	Thu May 09 08:44:55 2019 +0200
+++ b/test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/SuppressMessagesTest.java	Wed Aug 14 08:50:48 2019 +0200
@@ -24,11 +24,11 @@
 
 /**
  * @test
- * @summary Test that the default of flag ShowCodeDetailsInExceptionMessages is 'false',
- *          i.e., make sure the VM does not print the message on default.
+ * @summary Test that the default of flag ShowCodeDetailsInExceptionMessages is 'true',
+ *          i.e., make sure the VM does print the message on default.
  * @library /test/lib
  * @compile -g SuppressMessagesTest.java
- * @run main/othervm SuppressMessagesTest noMessage
+ * @run main/othervm SuppressMessagesTest printMessage
  */
 /**
  * @test
diff -r 4e981ab5986a test/hotspot/jtreg/vmTestbase/jit/t/t104/t104.gold
--- a/test/hotspot/jtreg/vmTestbase/jit/t/t104/t104.gold	Thu May 09 08:44:55 2019 +0200
+++ b/test/hotspot/jtreg/vmTestbase/jit/t/t104/t104.gold	Wed Aug 14 08:50:48 2019 +0200
@@ -1,2 +1,2 @@
 Exception thrown.
-java.lang.NullPointerException
+java.lang.NullPointerException: Cannot enter synchronized block because '<local1>' is null.
diff -r 4e981ab5986a test/langtools/jdk/jshell/ToolSimpleTest.java
--- a/test/langtools/jdk/jshell/ToolSimpleTest.java	Thu May 09 08:44:55 2019 +0200
+++ b/test/langtools/jdk/jshell/ToolSimpleTest.java	Wed Aug 14 08:50:48 2019 +0200
@@ -132,7 +132,7 @@
                         + "|  Caused by: java.io.IOException: bar\n"
                         + "|        at n (#2:1)\n"
                         + "|        ...\n"
-                        + "|  Caused by: java.lang.NullPointerException\n"
+                        + "|  Caused by: java.lang.NullPointerException: Cannot invoke 'String.toString()' because 'null' is null.\n"
                         + "|        at p (#1:1)\n"
                         + "|        ..."),
                 (a) -> assertCommand(a, "/drop p",