What is the correct option with regards to below snippet?interface NewCustomer {}class RegCustomer implements NewCustomer {}class QuickCustomer implements NewCustomer {}

RegCustomer can be replaced with QuickCustomer

QuickCustomer can be replaced with RegCustomer

We can instantiate objects of NewCustomer

NewCustomer can be replaced with RegCustomer

What is the correct option with regards to below snippet?interface New

1.	What is the correct option with regards to below snippet? interface NewCustomer { } class RegCustomer implements NewCustomer { } class QuickCustomer implements NewCustomer { }
A.	QuickCustomer can be replaced with RegCustomer
B.	We can instantiate objects of NewCustomer
C.	NewCustomer can be replaced with RegCustomer
D.	RegCustomer can be replaced with QuickCustomer
E.	None of these
Answer» D. RegCustomer can be replaced with QuickCustomer

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What is the correct option with regards to below snippet? <pre class="prettyprint lang-c">interface NewCustomer { } class RegCustomer implements NewCustomer { } class QuickCustomer implements NewCustomer { } </pre>
What is the output of this program? <pre class="prettyprint lang-c">interface Calculation { int var = 0; void calculate(int num); } class display implements Calculation { int p; public void calculate(int num) { if (num<2) { p = var; } else { p = num * num; } } } public class interfaces_Example { public static void main(String args[]) { display[] array = new display[4]; for(int k=0; k<4; k++) array[k] = new display(); array[0].calculate(0); array[1].calculate(2); array[2].calculate(4); System.out.print(array[0].p+" " + array[1].p + " " + array[2].p); } } </pre>
What is the output of this program? <pre class="prettyprint lang-c">interface Calculation { void calculate(int item); } class display0 implements Calculation { int p; public void calculate(int num) { p = num * num; } } class display1 implements Calculation { int p; public void calculate(int num) { p = num / num; } } public class interfaces_Example { public static void main(String args[]) { display0 object0 = new display0(); display1 object1 = new display1(); object0.p = 0; object1.p = 0; object0.calculate(5); object1.calculate(5); System.out.print(object0.p + " " + object1.p); } } </pre>
What is the output of this program? <pre class="prettyprint lang-c">interface calculation { void calculate(int Num); } class display implements calculation { int p; public void calculate(int Num) { p = Num * Num; } } public class interfaces_Example { public static void main(String args[]) { display object = new display(); object.p = 0; object.calculate(4); System.out.print(object.p); } } </pre>
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What is the correct option with regards to below snippet?interface NewCustomer {}class RegCustomer implements NewCustomer {}class QuickCustomer implements NewCustomer {}

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What is the correct option with regards to below snippet?
interface NewCustomer
{
}
class RegCustomer implements NewCustomer
{
}
class QuickCustomer implements NewCustomer
{
}