This instruction pushes the int -1 onto the operand stack.

Bytecode

Type	Description
u1	iconst_m1 opcode = 0x02 (2)

See Also

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

Notes

You could also use bipush -1, sipush -1 or ldc -1 to achieve the same effect, although iconst_m1 is typically more efficient and uses fewer bytes in the bytecode.