In the last article we saw how to assigning values to variables and their respective ranges. Lets try to learn more on variables and strings. Use of variables is a key to efficient coding in any programming language. Variable declaration , if not done properly, can lead to many debugging errors.

Variable Assignment and Initialization

• Once you have declared the type of a variable, you are free to initialize it and assign to it some value.
• Assignment and initialization works just as they did in Perl. You simply use variable name = some value. For example, consider the following code:

int marks = 66;

byte --> short --> int --> long --> float
     --> double

double d = 345.456;
int    i = (int) d;     

• In Java, there is no variable type called string. However, although Java does not have a built-in String type, it does provide you will a predefined class called String which you can use instead.
• I'll talk more about classes and using them in later articles. However, it would be nice to at least introduce the String class here so we can use it in the meantime.
• To instantiate a String, you simply use the same syntax that you would if it were a type:

String s = "Hello Learner";