"why we use interface in java" Code Answer's
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Interface in java
// interface in java example
interface Vehicle
{
public void accelerate();
}
class BMW implements Vehicle
{
public void accelerate()
{
System.out.println("BMW accelerating...");
}
}
public class InterfaceDemo
{
public static void main(String[] args)
{
BMW obj = new BMW();
obj.accelerate();
}
}
Source: www.flowerbrackets.com
how to implement a interface in java
interface methods{
public static hey();
}
class scratch implements methods{
// Required to implement all methods declared in an interface
// Or else the class becomes abstract
public static hey(){
System.out.println("Hey");
}
}
Interface in java
// interface syntax
interface InterfaceName
{
fields // by default interface fields are public, static final
methods // by default interface methods are abstract, public
}
Source: www.flowerbrackets.com
why we use interface in java
interface Animal {
void child();
}
class Cat implements Animal {
public void child() {
System.out.println("kitten");
}
}
class Dog implements Animal {
public void child() {
System.out.println("puppy");
}
}
public class LooseCoupling{
public static void main(String args[]) {
Animal obj = new Cat();
obj.child();
}
}
Source: www.tutorialspoint.com
how to declare a interface in java
// Assume we have the simple interface:
interface Appendable {
void append(string content);
}
// We can implement it like that:
class SimplePrinter implements Appendable {
public void append(string content) {
System.out.println(content);
}
}
// ... and maybe like that:
class FileWriter implements Appendable {
public void append(string content) {
// Appends content into a file
}
}
// Both classes are Appendable.
0
how to implement a interface in java
java define interface
/* File name : Animal.java */
interface Animal {
public void eat();
public void travel();
}
Source: www.tutorialspoint.com
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