java - Difference between SomeInterface.class and SomeClass.class? -

java - Difference between SomeInterface.class and SomeClass.class? -

i looking out difference between someinterface.class , someclass.class in java. can explain this?

edit: someclass implements someinterface.

classes in java used hold info , provide operations on data. interfaces used implment polymorphism. define operations implmenting classes musst provide have similar behaviours thier mutual parts. can think of interface kind of contract.

let's have vehicles , want each vehicle know how many wheels has. car, motorcycle , othe vehicle dont know how many wheels has , have count them first. can utilize interface forcefulness each vehicle provide number of wheels has.

interface vehicle { // define contract int getnumberofwheels(); } class auto implements vehicle { // respect contract prividing implmentation method getnumberofwheels() public int getnumberofwheels() { homecoming 4; } } class motorcycle implements vehicle { public int getnumberofwheels() { homecoming 2; } } class genericvehicle implements vehicle { public int getnumberofwheels() { homecoming countwheels(); } private int countwheels() { int c=0; // count... homecoming c; } } // using classes / diferent types of vehicles vehicle v1 = new car(); vehicle v2 = new motorcycle(); vehicle v3 = new genericvehicle(); system.out.println("vehicle 1 has " + v1.getnumberofwheels() + " wheels."); system.out.println("vehicle 2 has " + v2.getnumberofwheels() + " wheels."); system.out.println("vehicle 3 has " + v3.getnumberofwheels() + " wheels.");

for each new typ of vehicles want add together have implment interface vehicle if want habe behave other ones.

this not everithing interfaces hope help little in undestanding them.

java