50.

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bipush

push one-byte signed integer

Jasmin Syntax
     bipush <n> 
<n> is an integer >= -128 and <= 127 that is pushed onto the stack.

Stack

Before

After
...
<n>
...
...
Description

bipush takes a single parameter, <n> (an 8-bit signed integer), sign extends it to a 32-bit int, and pushes the resulting int value onto the operand stack.

bipush is typically more efficient than ldc. It also occupies fewer bytes in the class file.

Example

 bipush    0x10    ; push the value 0x10 (16) onto the operand stack 
Bytecode

The bipush opcode is followed in the bytecode by an 8-bit signed byte specifying the integer value to push.

Type

Description
u1
bipush opcode = 0x10 (16)
s1
<n>
See Also

sipush, ldc, ldc_w, ldc2_w, aconst_null, iconst_m1, iconst_<n>, lconst_<l>, fconst_<f>, dconst_<d>


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


Java Virtual Machine
Java Virtual Machine (Java Series)
ISBN: 1565921941
EAN: 2147483647
Year: 1996
Pages: 171

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