Create an interface Printable with a method print(), implement this interface in classes Document and photo
interface Printable
{
void print();
}
class Document implements Printable
{
void print()
{
System.out.println(“Document printed”);
}
}
class Photo implements Printable
{
void print()
{
System.out.println(“Photo printed”);
}
}
class Main
{
public static void main(String args[])
{
Document d=new Document();
Photo p=new Photo();
d.print();
p.print();
}}
Create an interface Calculator with methods add(),subtract(),multiply(),divide(). Implement those interface in class named calculator
interface Calculator
{
int add(int a,int b);
int sub(int a,int b);
int multiply(int a,int b);
int divide(int a,int b);
}
class Calculator1 implements Calculator
{
int add(int a,int b){return a+b;}
int subtract(int a,int b){return a-b;}
int multiply(int a,int b){return a*b;}
int divide(int a,int b){return a/b;}
}
class Main
{
public static void main(String args[])
{
Calculator1 c=new calculator1();
System.out.println(“Add=” +c.add(10,20));
System.out.println(“Sub=” +c.subtract(50,20));
System.out.println(“Mul=” +c.multiply(10,2));
System.out.println(“Div=” +c.divide(10,5));
}}