Chapter 2, Problem 5.3E

Program Plan Intro

Java variables:

• The java variables are the containers to hold a value during the program execution.
• The variables can be declared in different data type according to the need.
• The variables are names to some memory location and these memory locations can hold values.
• The variables can have the data type, integer, character, float, double and so on.
• If a variable is declared as “int” data type, then this variable will hold an integer value. Likewise, “float” data type variable will hold a floating point value and so on.
• The value of a variable may change when the program start the execution if the change is mentioned in the program code.

“System.out.println” statement:

• The “System.out.println” is a java statement used to print its argument into the “System.out”. The “System.out” is generally stdout.
• The one difference from “print()” method is “println()” method creates a newline after printing  its arguments on the monitor.
• This method is used when the user need output in separate lines.
• Example:

  //how to use println

  System.out.println(“Hello!”);

• The above statement will print “Hello!” on the monitor.