const-string

Purpose

Move a reference to the string specified by the given index into the specified register.

Details

Op & Format	Mnemonic / Syntax	Arguments
1a 21c	const-string vAA, string@BBBB	`A:` destination register (8 bits) `B:` string index
1b 31c	const-string/jumbo vAA, string@BBBBBBBB	`A:` destination register (8 bits) `B:` string index

Constraints

A must be a valid register index in the current stack frame.
B must be a valid index into the string constant pool.

Behavior

A new java.lang.String object S is allocated on the heap and filled with the contents of string pool entry B.
A reference to an internalized version of the new object is moved into register vA, that is, the instruction behaves as if vA' = S.intern() was called.
If v(A-1) is the lower half of a register pair, v(A-1)' becomes undefined.
If v(A+1) is the upper half of a register pair, v(A+1)' becomes undefined.

Exceptions

None.