User-submitted Java Projects

Create a java program that input date. If valid date it will output Leap year or not leap year otherwise output invalid date.
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Create a java program that will show the FACTORIAL OF AN INTEGER NUMBER ranges from 1 to 15. The user should input Integer Number. Only valid integer number should be accepted by the program.
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Write a program that asks the user to enter three test scores. The program should display each test score, as well as the average of the scores.


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