1. Write a program that asks the user for a password value; the expected value is "terps". If the user provides the expected value, the program will print the message "Access Granted"; otherwise the program will print the message "Access Denied." 2. Complete the program below. The program reads an integer value and prints the square if the value if greater than 0 ; otherwise the message "Invalid value" will be printed. Notice the quotes must surround the words Invalid value. For example, if the user enters 5, the program will print 25. public elass square public statie void main(String[] args) \& 3. What is 75 in base 2 ? Base 8 ? Base 16 ? 4. Complete the program below that computes tuition cost. The program will read the cost per credit (in dollars) using the message "Enter cost per credit: " and the number of credits using the message "Enter number of credits: ". If the number of credits is larger than or equal to 18 , the cost per credit will be reduced by half. The program will display the amount to pay using the message "Please pay: " followed by the amount. Remember that the Scanner methods nextDouble() and nextint() allow you to read a double and an integer, respectively. The following are examples of running the program. Underlined text represent input provided by the user