wrong

[0YX]

Intro-to-Java-Programming/Exercise_03/Exercise_03_09/Exercise_03_09.java

Line 46 in 1fcbde2

System.out.println("The ISBN-10 number is " + d1 + d2 + d3 + d4 + d5

I think you should use System.out.print("The ISBN-10 number is " + d1 + d2 + d3 + d4 + d5+ d6 + d7 + d8 + d9);