CISS-111 Project 1

Project 1

Write a Java program to demonstrate using command line arguments to convert numeric quantities with a certain radix (counting base) to base ten numbers. You will employ the use of String methods indexOf() and substring() as well as the overloaded Integer method parseInt().

Take a look at the documentation on how to pass command line arguments in IntelliJ. Other IDEs have similar capabilities.

Learning outcomes

• Working with command line arguments.
• Exposure to rudimentary parsing principles.
• Working with String methods.
• Working with Integer.parseInt().
• Confirmation program produces desired results.

The strings in args will be the form “value:radix” where the value is expressed with digits appropriate to the radix. So “16384:10” is 16384 as a base 10 number.

Use indexOf() to find the colon and gather the number and the radix using substring(). These values can be used to make a call to parseInt() to convert the numbers to base 10.

If the provided command line arguments were:

4eb:16 10110110:2 407:8 2048:10

Output should be similar to:

4eb base 16 is 1259 base 10
10110110 base 2 is 182 base 10
407 base 8 is 263 base 10
2048 base 10 is 2048 base 10

Extra Credit!

2 points for detecting a missing colon.
3 points for trapping conversion errors (Chapter 12 – Exceptions)

Submit the project to the Learning Management System as Project1_lastname.java.