..., objectref
..., value
| getfield | |
| indexbyte1 | |
| indexbyte2 |
Stack
..., objectref ..., value
Stack
..., objectref ..., value.word1, value.word2
Description
The objectref, which must be of type reference, is popped from the operand stack. The unsigned indexbyte1 and indexbyte2 are used to construct an index into the constant pool of the current class (§3.6), where the index is (indexbyte1 << 8) | indexbyte2. The constant pool item at the index must be a CONSTANT_Fieldref (§4.4.2), a reference to a class name and a field name. If the field 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 item is resolved (§5.2), determining both the field width and the field offset. The value at that offset into the class instance referenced by objectref is fetched and pushed onto the operand stack.
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Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)
Copyright © 1996 Sun Microsystems, Inc.
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