This is an overview of my Protected Keywords Program this will help you to understand the concept very easily. Here i have created the different types of Packages for different functions.
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package p1; public class C1{ public int x; protected int y; int z; protected void m(); private int u; } |
package p1; public class C2{ C1 o=new C1(); o.x;//? o.y;//? o.z;//? o.u;//? o.m()//? } |
package p1; public class C3 extends C1{ status of x,y,z,u,and m() } |
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package p2; status of x, y, z, u, and m() } |
package p2; C1 o=new C1(); status of x, y, z, u, and m() } |
In this i have used the Overriding concept by using methods Overriding. The main use of this concept is to override the one with other.
class Homer {
char doh(char c) {
System.out.print(“doh(char)”);
return ‘d’;}
float doh(float f) {
System.out.print(“doh(float)”);
return 1.0f; }}
class Milhouse {}
class Bart extends Homer {
void doh(Milhouse m) {
System.out.print(“doh(Milhouse)”);}}
public class Hide {
public static void main(String[] args) {
Bart b = new Bart();
b.doh(1);
b.doh(‘x’);
b.doh(1.0f);
b.doh(new Milhouse());}}`
class Customer{
private int cid;
private static int counter =1000;
public Customer(){cid=++counter; }
public void displayCust(){
System.out.println(“Custid :” +cid);}
}
class RegCustomer extends Customer{
private float dis;
public RegCustomer(float x){ dis=x; }
public void displayCust(){
System.out.println(“Discount :” +dis); }
}
class PriCustomer extends Customer{
private String as;
public PriCustomer(String x){ as=x; }
public void displayCust(){
System.out.println(“Meme :” +as);}
}
class Retail{
public static void main(String [] args){
RegCustomer rc=new RegCustomer(10.5f);
PriCustomer pc=new PriCustomer(“Gold”);
rc.displayCust(); pc.displayCust();
}
}
