Static Variable vs Instance Variable in Android Explained

Variables can be Static or Instance Variable depending upon our usage.

Suppose the value is constant throughout the class we can define a static variable

In case the value of variable keeps changing every time we call the class then its is called as Instance variable

Example we have a class called bus

if there is a variable defined for driver and passengers

bus1

the value of driver is always =1 so we can define as static

           public int static driver=1;

the value of passenger keeps changing so its defined as instance

         public int passenger=20;

again for bus2

the value of driver is always =1 so we can define as static

           public int static driver=1;

the value of passenger keeps changing so its defined as instance

         public int passenger=30;