SCJP的四个科目310-025、310-035、310-055、310-056的'区别如下：
Sun Certified Programmer for Java 2 Platform 1.2(310-025)表明你掌握了JDK1.2的知识。
Sun Certified Programmer for Java 2 Platform 1.4(310-035)表明你掌握了JDK1.4的知识。
Sun Certified Programmer for the Java 2 Platform, Standard Edition 5.0(310-055)表明你掌握了JDK1.5的知识。
Sun Certified Programmer for the Java 2 Platform, Standard Edition 5.0 Upgrade Exam(310-056)是从JDK1.2或JDK1.4升级到JDK1.5的考试。
