167.

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swap

swap top two stack words

Jasmin Syntax

     swap 

Stack

Before	After
word1	word2
word2	word1
...	...

Description

Swaps the top two single-word items on the stack. word1/word2 cannot belong to a long or double.

Bytecode

Type	Description
u1	swap opcode = 0x5F (95)

Notes

There is no swap2, although you could use:

     dup2_x2     pop2 

to achieve the same effect.

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Java Virtual Machine, by Jon Meyer and Troy Downing, O'Reilly Associates