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.

Write a program that allows input of an integer n ( n < 1000 ) import java.util.Scanner; public class BaiTapJavaCoBan8 { public static void main (String [] args) { int n; boolean soNguyenTo = false; ...

What's the difference between an Integer and int in Java? Here we compare these two Java data types for usage, performance and when to choose an int or an Integer in your code.