==== 7.5.12 baload ====

Load byte or boolean from array 

Format 

baload 

Forms 

baload = 37 (0x25) 

Stack 

..., arrayref, index -> ..., value 

Description 

The arrayref must be of type reference and must refer to an array whose components are of type byte or of type boolean. The index must be of type short. Both arrayref and index are popped from the operand stack. The byte value in the component of the array at index is retrieved, sign-extended to a short value, and pushed onto the top of the operand stack. 

Runtime Exceptions 

If arrayref is null, baload throws a NullPointerException. 

Otherwise, if index is not within the bounds of the array referenced by arrayref, the baload instruction throws an ArrayIndexOutOfBoundsException. 

Notes 

In some circumstances, the baload instruction may throw a SecurityException if the current context ([[3.4_Contexts| Section 3.4, Contexts]]) is not the owning context ([[3.4_Contexts| Section 3.4, Contexts]]) of the array referenced by arrayref. The exact circumstances when the exception will be thrown are specified in Chapter 6 of the **//Runtime Environment Specification, Java Card Platform, Version 2.2.2//**.