The class below sums up integers from the command line and prints the total
to standard output:
public class Adder {
public static void main(String[] args) {
int total = 0;
for (String s : args) {
try {
total += Integer.parseInt(s);
}
catch(NumberFormatException e) {
System.out.println("Ignoring bad input: " + s);
}
}
System.out.println("The total is " + total);
}
}