Each of the following files in the Chapter15 folder of your downloadable student files has syntax and/or logic errors. In each case, determine the problem and fix the program. After you correct the errors, save each file using the same filename preceded with Fix. For example, DebugFifteen1.java will become FixDebugFifteen1.java.

a. DebugFifteen1.java

b. DebugFifteen2.java

c. DebugFifteen3.java

d. DebugFifteen4.java