f and CONSTANT_Methodref, the CONSTANT_Class item must be an actual class. For CONSTANT_InterfaceMethodref, the item must be an interface which purports to implement the given method.<P>
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<H3>name_and_type_index</H3>
constant_pool[name_and_type_index] will be an entry of type CONSTANT_NameAndType. This constant pool entry gives the name and signature of the field or method.<P>
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<H3>Abstract Fields and Methods</H3>
CONSTANT_NameAndType is used to represent a fiel