With one simple line of code, Java’s JOptionPane enables a program to prompt the user with a Windows-based input dialog box, and return any user input as a String. It has always ... of powerful ...

Create a new Java ... append(): Add " - Learning Java" to the StringBuilder. insert(): Insert " is fun" after the word "Lab". delete(): Delete the word "Learning" from the StringBuilder. reverse(): ...

Programmatically subtract the value of the first element in the array from the value in //the last element of the array (i.e. do not use ages[7] in your code ... System.out.println(average); //2.