Need help

a. Create an application named NumbersDemo whose main() method holds two integer variables. Assign values to the variables. In turn, pass each value to methods named displayTwiceTheNumber(), displayNumberPlusFive(), and displayNumbersquared(). Create each method to perform the task its name implies. Save the application as NumbersDemo.java. at the keyboard. Save the file as Percentages2.java. 6. To encourage good grades, Hermosa High School has decided to award each student a bookstore credit that is 10 times the student's grade point average. In other words, a student with a 3.2 grade point average receives a $32 credit. Create a class that prompts a student for a name and grade point average, and then passes the values to a method that displays a descriptive message. The message uses the student's name, echoes the grade point average, and computes and displays the credit. Save the application as BookstoreCredit.java