Core Java Programming Challenges #15 | Coding Challenges | Naresh IT

Core Java Programming Challenges #15 | Coding Challenges | Naresh IT

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[rohitkumargoud]

For example there are some codes written for 14 inch LCD TV then in the new generation a new 52 inch TV comes, so it wants the code written for same 14 inch TV technology with some upgradations.
In that case we use method overriding.

[devrajsinghchouhan]

public class methodoveride {
public void m()
{
int a=50, b=5;
int process = a+b;
Process: " +process);
}
}
public class methodoveride2 extends methodoveride{

public void m()
{
int a=8, b=7;
int process = a-b;
of a and b: " +process);
}
public static void main(String[] args) {
methodoveride2 m2 = new methodoveride2();
m2.m();


}

}

Output:
Substraction of a and b: 1

[chinthapallibalaji]

/* The real life example of overriding is Atm machine...what ever the bank account u have..
every Atm machine will accept all the cards and performs the required operation irrespective of bank
here the card insert slot logic of one bank is overridden with another bank*/
package com.nit.challaenges;
class ATMHdfc{
void withDrawnMethod() {
System.out.println("amount withdrawniam frm ATMHdfc class ");
}
}
class Challenge_15 extends ATMHdfc{
void withDrawnMethod() {
System.out.println("amount withdrawn and iam frm Challenge_15 class ");
}
public static void main(String[] args) {
Challenge_15 ch=new Challenge_15();
ATMHdfc ac=new Challenge_15();
ATMHdfc ac1=new ATMHdfc();
ch.withDrawnMethod(); // it is executed from current object class(Challenge_15)
ac.withDrawnMethod();//it is executed from current object class(Challenge_15)
ac1.withDrawnMethod();//it is executed from current object class(ATMhdfc class)
}
}

[iamnikhiljain]

Here car is upgraded from maruti 800 to maruti NEXA using overriding.

class ParentHome{
void ownerName(){
System.out.println("House Owner : Parent");
}
void car(){
System.out.println("Owner Car : Maruti 800");
}
}
class ChildHome extends ParentHome{
void car(){
System.out.println("Owner Car : Maruti NEXA");
}
public static void main(String[] args) {
ChildHome c = new ChildHome();
c.ownerName();
c.car();
}
}

[editorschoice]

import java.util.*;
class Demo1{
void h(){

System.out.println("Cut the call");
}
}
class Demo extends Demo1{
void h(){

System.out.println("cut the call");
}

public static void main(String args[]) {
Demo d= new Demo();
d.h();
}
}

[pravinkhawse]

class Base
{
void functions ()
{
System.out.println("Calling ");
System.out.println("texting ");
System.out.println("alarms ");
System.out.println("Calender ");
System.out.println("Basic Games ");
}
}
class c15 extends Base
{
void functions ()
{
System.out.println("\nCalling ");
System.out.println("texting ");
System.out.println("alarms ");
System.out.println("Calender ");
System.out.println("Basic Games ");
System.out.println("Video Calls ");
System.out.println("Internet Surfing \n Adavanced gaming \n Multiprocessing ");
}


public static void main (String args[])
{
System.out.println("In main ()");
Base b= new Base();
b.functions();

c15 ob= new c15();
ob.functions();
}

}

[sreedharkamera]

package com.sreedhar;

class vehicle
{
int maxspeed=100;
int speed=40;
public void run()
{

System.out.println("Vehicle maxmimum speed"+maxspeed);
System.out.println("Vehicle runs with speed"+speed);

}

}
class Bike extends vehicle
{
int milage=50;
int speed=140;
public void run()
{
System.out.println("Vehicle runs with speed:"+speed);
System.out.println("Vehicle limit:"+milage);

}

}
class Challenge14b
{

public static void main(String[] args)
{

System.out.println("In main method");
Bike bk=new Bike();
bk.run();


}
}

[ksvijayan]

package com.NIT;

//Method Overriding

public class Challenge15 {

public static void main(String[] args) {
SWE1 s = new SWE1();
SWE1 s1 = new SWE2();
s.display();
s1.display();

}

}

class SWE1{
protected int base = 20000;
public void display() {
System.out.println("SWE1 Salary: "+base);
}
}

class SWE2 extends SWE1
{
public void display() {
int basee = base;
basee=basee + (basee/5); //20% increment
System.out.println("SWE2 Salary: "+basee);
}
}