1. Write a complete Java method called sumNums that takes no parameters and returns an integer. The method uses a do-while loop to ask the user to enter a series of positive integer values and keeps a running total. Use a sentinel (-1) to allow the user to indicate when they are finished. The method returns the total.

2. Write a complete Java method called checkPassword that takes a String as a parameter (password) and returns a boolean. First, check that the password is at least 8 characters long. Then use a while loop to check that the password contains at least one digit. If the password has the correct length and contains a digit, return true, otherwise return false

3. Write a complete Java method called authenticate that takes two Strings (username, password) as parameters and returns a boolean. If the username parameter has the value "Chucky" and the password parameter has the value "Cheese1", return true. Otherwise return false.

4. Write a complete Java method called getScoreSheet that takes two ints as parameters (rows and columns) and constructs a 2-dimensional array of doubles (calles scores) with a size based on the rows and columns parameters. Use a nested loop to initialize each value in the array to 100.00. The method returns the scores array.

5. Write a complete Java method called writeList that takes an ArrayList of Strings as a parameter and writes each String as a line in a text file. Make sure to handle the Exception that might be thrown and print the error message to the command line.