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.
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.
You just declared a variable.
You need to create the array:
short[] arr = new short[size];
sh will always be null in your code:
short[] sh = new short[b.length];
Initialization means to create the array, in Java use the "new" keyword
short[] arr = new short[10];
sh is a variable that represents an array of shorts.
warning: The variable sh can only be null at this location.
sh is initialized but not properly, it is null:
short[] sh = new short[b.length];
warning: The local variable sh may not have been initialized.
Since the local variables are not initialized automatically like instance variables you have to initialize it.
