Question

This line of code gives the following warning:

    short[] sh = null;

    for (int i = 0, n = b.length; i < n; i++) {
        sh[i] = 0;

    }  

warning: The variable sh can only be null at this location.

short[] sh;

for (int i = 0, n = b.length; i < n; i++) {
    sh[i] = 0;

} 

And, this code gives the following warning:

warning: The local variable sh may not have been initialized.

Answer 1

This is because you need to initialize the array. Try this:

short[] sh = new short[b.length];

If you don’t initialize, you will get those warnings, and will get NullPointerException if you run it.