The resulting method must not be <clinit>, a class or interface initialization method (§3.8).
If the method is <init>, an instance initialization method (§3.8), then the method must only be invoked once on an uninitialized object, and before the first backward branch following the execution of the new instruction that allocated the object.
Finally, if the method is protected (§4.6), then it must be either a member of the current class or a member of a superclass of the current class, and the class of objectref must be either the current class or a subclass of the current class.
The constant pool entry representing the resolved method includes a direct reference to the code for the method, an unsigned byte nargs that must not be zero, and the method's modifier information (see Table 4.4, "Method access and modifier flags").
The objectref must be of type reference and must be followed on the operand stack by nargs - 1 words of arguments, where the number of words of arguments and the type and order of the values they represent must be consistent with the descriptor of the selected instance method.
If the method is synchronized, the monitor associated with objectref is acquired.
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Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)
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