REVIEW
BASIC SYNTAX:
CASE SENSITIVITY - java is case sensitive
CLASS NAMES - For all class names the first letter should be in Upper Case
ex: class MyFirstJavaClass
METHOD NAMES - all method names should start with a lower case
ex: public void myMethodName()
PROGRAM FILE NAME - name of the program file should exactly match the class name
public static void main(String args[]) - Java program processing starts from the main() method which is mandatiry
BufferedReader
Scanner
JOptionPane
Null in joptionpane is needed because