I CSI 201 Chapter Notes - Chapter 8: Memory Address, Object Composition, Java Virtual Machine

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Each instance of a class has its own copy of instance variables. * the rectangle class defines a length and a width field. * each instance of the rectangle class can have different values stored in its length and width fields. Instance methods require that an instance of a class be created in order to be used. Instance methods typically interact with instance fields or calculate values based on those fields. Static fields and static methods do not belong to a single instance of a class. To invoke a static method or use a static field, the class name, rather than the instance name, is used. Class fields are declared using the static keyword between the access specifier and the field type. private static int instancecount = 0; The field is initialized to 0 only once, regardless of the number of times the class is instantiated. Primitive static fields are initialized to 0 if no initialization is performed.

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