True or False:

1. All Java methods must be defined in a class definition.

2. Formal parameters in a method header and actual parameters in a method reference must always agree exactly in number, type, order.

3. A Java source file may contain at most one class definition.

4. Java's package acces is even "friendlier" than C++ friends access.

5. Every compiled java class has its very own .class file including anonymous, nested classes.