Hi How can I change an array list to integer or double? this is my code and i want show answer like a number and i use it not just print it ...

Write a test program that prompts the user to enter an integer then displays the sum of all its digits. So in your main method you'd call sumDigits () like this and print what it returns.

Chapter-4-Introduction-to-Java-Solution-Codes- / Q 4.11 (Decimal to hex) Write a program that prompts the user to enter an integer between 0 and 15 and displays its corresponding hex number Cannot ...