I'm trying to use one of the Apache Commons libraries (Math 3.3) in Java with Eclipse. (JDK 1.7 and Eclipse 3/JDT 3.7) And I can't get away from NoClassDefFoundError ...
Starting in April, Oracle will treat JAR files signed with the MD5 hashing algorithm as if they were unsigned, which means modern releases of the Java Runtime Environment (JRE) will block those JAR ...