My application is being developed in Jdeveloper(jdk 1.4).Am using drools as rule engine. In my .drl file when I place two rules whose consequence parts just contains "System.out.println("Some message");" it works fine. But when I try to call any method instead of sop, it hangs during compilation.Am not getting compilation errors. The same code works fine with Eclipse. Can anyone tell me what the problem is?