Lambda
Expression:
·
A new feature of java8s
·
Main intension is replacement of anonymous inner
class.
·
Lambda expression is nothing but an anonymous
method(method without name)
The general form is :
(para-list)->
{
//method body
};
Let's see an example for better clarity using normal interface approach, then using anonymous inner class approach, then lambda expression approach:
Approach-1:
package java8s;
interface Transaction
{
public void withDraw(int amt);
}
class A implements Transaction
{
public void withDraw(int amt)
{
System.out.println("amount
withdrawn is"+amt);
}
}
public class
LambdaExpressionExample {
public static void main(String[] args) {
A
ob1=new A();
ob1.withDraw(15000);
}
}
Approach-2:
package java8s;
interface Transaction
{
public void withDraw(int amt);
}
public class
LambdaExpressionExample {
public static void main(String[] args) {
Transaction
ob1=new
Transaction() //Anonymous
Inner Class
{
public void withDraw(int amt)
{
System.out.println("amount
withdrawn is"+amt);
}
};
ob1.withDraw(15000);
}
}
Approach-3:
package java8s;
interface Transaction
{
public void withDraw(int amt);
}
public class
LambdaExpressionExample {
public static void main(String[] args) {
Transaction ob1=(int amt)->
{
System.out.println("amount
withdrawn is"+amt);
};
ob1.withDraw(1500);
}
}
Output:
amount withdrawn is1500
Thank you for sharing about lambda expression.It is very important for me.
ReplyDeleteHii Miki, thanks for sharing your view n i will suggest you go through this blog always and gain more n more info...
ReplyDelete