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BJP3 Self-Check 5.23: robustInput

Language/Type: Java input Scanner
Author: Marty Stepp (on 2013/09/02)

The following code is not robust against invalid user input. Change the code so that it will not proceed until the user has entered a valid age (any integer) and grade point average (GPA, any real number). You may assume that the user enters a single token of input each time when prompted. Here is a sample dialogue of how the code should behave: 

Type your age: hello
Type your age: ?
Type your age: 3.14
Type your age: 25
Type your GPA: a
Type your GPA: bcd
Type your GPA: 2.5
age = 25, GPA = 2.5
Type your solution here:


This problem asks for bare code. Submit a fragment of Java code as described. Do not write any class or method heading around your code; just write the lines of code that will produce the result described.

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