This Blog explains about Java 8 – New Features – Functions, forEach, Consumer Interface.
Demo_Impl.java
package function_consumer;
public class Demo_Impl implements Demo_Interface{
public static void main(String[] args) {
// TODO Auto-generated method stub
Demo_Impl di = new Demo_Impl();
di.display();
}
public void display()
{
System.out.println("LED Display");
}
}
Demo_Interface.Java
package function_consumer;
public interface Demo_Interface {
default void display()
{
System.out.println("LCD Display");
}
}Demo.java
package function_consumer;
import java.util.Arrays;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Function;
public class Demo {
public static void main(String[] args) {
// TODO Auto-generated method stub
// Contract cc = new Contract_Implementation();
// cc.rule1();
List<Integer> l = Arrays.asList(10,4,5,3);
//Consumer<Integer> cc = (t) -> System.out.println(t);
//cc.accept(100);
l.forEach((no) -> System.out.println(no));
}
}Consumer_Implementation.java
package function_consumer;
import java.util.function.Consumer;
public class Consumer_Implementation implements Consumer<Integer>{
@Override
public void accept(Integer no) {
// TODO Auto-generated method stub
System.out.println(no);
}
}Contract.Java
package function_consumer;
@FunctionalInterface
public interface Contract {
public void rule1();
}
Contract_Implementation
package function_consumer;
public class Contract_Implementation implements Contract{
@Override
public void rule1() {
// TODO Auto-generated method stub
System.out.println("Hi");
}
}