MULTILEVEL INHERITANCE USING PARAMETERIZE CONSTRUCTOR

MULTILEVEL INHERITANCE :  IT MEANS  BASE >> DERIEVED1 >> DERIEVED2

* here base features are derieved in derieved 1

*& then derieved1 features (which contain features of base)  are derieved in derieved2

EXAMPLE

public class base {

static int x,y; // here static keyword is used so that x & y value once initialized then it remains static at other places and not become null//

void set1(int a, int b){

x=a;

y=b;

}

void sum1(){

System.out.println("sum1 ="+(x+y));

}

}

public class der1 extends base {

static int z,k;

void set2(int c,int d){

z=c;

k=d;

}

void sum2(){

System.out.println("sum2 ="+(x+y+z+k));    // here x & y are inherited from base

}

}

public class der2 extends der1 {

int u,i;

void set3(int e,int f){

u=e;

i=f;

}

void sum3(){

System.out.println("sum3 ="+(x+y+z+k+u+i)); //here z & k are inherited from der1

}

public static void main(String[] args) {

der2 obj1  = new der2(); //objects of finally at last derieved class should be made 

obj1.set1(10,5);

obj1.sum1();

der2 obj2 = new der2();

obj2.set2(5, 10);

obj2.sum2();

der2 obj3 = new der2();

obj3.set3(10,10);

obj3.sum3();

}

}

OUTPUT :

 sum =15

sum =30

sum =50