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Q: Create a Java program that translates a letter grade into a number grade. Letter grades are A B C D F, possibly followed by + or -. Their numeric values are 4, 3, 2, 1, and 0. There is no F+ or F-. A + increases the numeric value by 0.3, a - decreases it by 0.3. However, an A+ has the value 4.0. All other inputs have value -1.
A sample session could look like following.
Enter a letter grade:
B-
Numeric value: 2.7.
Write a class Grade with a method getNumericGrade.