The objective says you have to know legal identifiers only for variable names, but the rules are the same for ALL Java components. So remember that a legal identifier for a variable is also a legal identifier for a method or a class. However, you need to distinguish between legal identifiers and naming conventions, such as the JavaBeans standards, that indicate how a Java component should be names. In other words, you must be able to recognize that an identifier is legal even if it does't confirm to naming standards.
If the exam question is asking about naming conventions - not just whether an identifier will compile - JavaBeans will be mentioned explicitly.
Refrence: SCJP Sun® Certified Programmer for Java™ 6 Study Guide Exam (310-065)
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