Discussion
What will be the output of the program?
public class CommandArgsTwo
{
public static void main(String [] argh)
{
int x;
x = argh.length;
for (int y = 1; y <= x; y++)
{
System.out.print(" " + argh[y]);
}
}
}
and the command-line invocation is
> java CommandArgsTwo 1 2 3
Answer: D
An exception is thrown because at some point in (System.out.print(" " + argh[y]);), the value of x will be equal to y, resulting in an attempt to access an index out of bounds for the array. Remember that you can access only as far as length - 1, so loop logical tests should use x < someArray.length as opposed to x <= someArray.length.
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