In my last post, i explained about role of object in oops language. Now, we more elaborate it with some e.g.

class Bicycle
gear, speed, cadence , music system volume. 
{
int cadence= 0;
int speed=0;
int music system volume=0;
int gear=1;
void changeCadence(int newValue)
{
Cadence=newValue;
}
void speedUp(int increment)
{
speed=speed+increment;
}
void changeGear(int newValue)
{
gear=newValue;
}
void musicvolumeHigh{ int increment)
{
music volume= music volume+ increment;
}
void printStates()
{
system.out.println("cadence:"+cadence+"speed:"'+speed+"gear:"+gear+"music volume:"+music volume);
}