Integer Variable in Java Programming

Integer Type Variable

In our earlier lesson we have learned about variable and how they are used to store values in computer memory. Now in this lesson we will learn how to declare variable in C programming using an Integer Data Type.

Video Explanation

Click the button below to watch the explanation.

Please wait while the video is loading....

So the first type of variable we need to know about is of type int - short for integer. This type of variable is used to store a whole number either positive or negative only (example: 10, 89, -24 etc). But if you try to store a fractional value (example: 12.36) in it then it will give loss of precision error in Java.

int variable_name;

Here int is used for declaring Integer data type and variable_name is the name of variable (you can use any name of your choice for example: a, b, c, alpha, etc. but remember the Naming Conventions while declaring an integer variable) and ; is used for line terminator (end of line).

Now let's see some examples for more understanding.

int x;

int x = 10;

int x, y, z;

int x=42, y=67, z=85;

int x;
x = 18;

int x = 76;
x = 54; // now the new value of x is 54