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invokestatic

Operation
Invoke a class (static) method

invokestatic
indexbyte1
indexbyte2

Forms
invokestatic = 184 (0xb8)

Stack
..., [arg1, [arg2 ...]] ...

Description
The unsigned indexbyte1 and indexbyte2 are used to construct an index into the constant pool of the current class (§3.6), where the value of the index is (indexbyte1 << 8) | indexbyte2. The item at that index in the constant pool must have the tag CONSTANT_Methodref (§4.4.2), a reference to a class name, a method name, and the method's descriptor (§4.3.3). The named method is resolved (§5.2). The descriptor of the resolved method must be identical to the descriptor of one of the methods of the resolved class. The method must not be <init>, an instance initialization method (§3.8), or <clinit>, a class or interface initialization method (§3.8). It must be static, and therefore cannot be abstract. 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.

The constant pool entry representing the resolved method includes a direct reference to the code for the method, an unsigned byte nargs that may be zero, and the method's modifier information (see Table 4.4, "Method access and modifier flags").


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Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)
Copyright © 1996 Sun Microsystems, Inc. All rights reserved
Please send any comments or corrections to doug.kramer@sun.com