Merge pull request #1763 from newrelic/msgformat-premain-load

Add MessageFormat class to InitProblemClasses

Author: jtduffy

newrelic-agent/src/main/java/com/newrelic/agent/InitProblemClasses.java

@@ -14,6 +14,7 @@
 
 import java.lang.ref.Reference;
 import java.lang.ref.ReferenceQueue;
+import java.text.MessageFormat;
 import java.util.Collections;
 import java.util.Map;
 import java.util.Set;
@@ -32,6 +33,9 @@ public static final void loadInitialClasses() {
             Utils.getClassResourceName(Class.forName("java.net.URL"));
             UtilityClass.class.getName();
 
+            // Force this formatter to load early to avoid a java.lang.ClassCircularityError
+            MessageFormat.format("{0}", 1.0);
+
             // This is here to attempt to get around a Websphere J9 (JDK6) deadlock
             ClassLoader classLoader = UtilityClass.class.getClassLoader();
             classLoader.getResource(WeaveUtils.getClassResourceName(UtilityClass.class.getName()));