Labda functions demo

Author: bhavnavarshney

Java/Java8/ForEachLoop.java

@@ -0,0 +1,11 @@
+package Java8;
+import java.util.Arrays;
+import java.util.List;
+
+public class ForEachLoop {
+
+    public void whatIsForEachLoop() {
+        List<Integer> arrayList = Arrays.asList(1,2,3,4,5);
+        arrayList.forEach(i -> System.out.println(i)); //Lambda
+    }
+}

Java/Java8/LambdaFeature.java

@@ -0,0 +1,28 @@
+package Java8;
+
+interface MyInterface {
+    public void something(String s);
+}
+
+//class A implements MyInterface {
+//    public void something() {
+//        System.out.println("Hi, there is a better way of implementing me! So comment me");
+//    }
+//}
+public class LambdaFeature {
+    public void whatIsLamdaFeature() {
+//        MyInterface a = new MyInterface() {
+//            public void something(String s) {
+//                System.out.println("So much code!" + s);
+//            }
+//        }
+
+        // Let's do the same above implementation using lamda!
+        MyInterface a ;
+        // a = (String s) -> System.out.println("Hey! This is lamda function and much better way of implementing me! If you want to see the magic, checkout what is created after you compile me!");
+        // As there is only 1 parameter - You can write like below without braces and type!
+        a = s-> System.out.println("Hey! This is lamda function and much better way of implementing me! If you want to see the magic, checkout what is created after you compile me, "+s);
+
+        a.something("Developer");
+    }
+}

Java/Java8/NewFeatures.java

@@ -2,11 +2,16 @@
 
 public class NewFeatures {
     public static void main(String[] args) {
-        Interfaces8 i1 = new Interfaces8();
-        i1.act();
+//        Interfaces8 i1 = new Interfaces8();
+//        i1.act();
+//        defaultInterfaceEg i2 = new defaultInterfaceEg();
+//        i2.act();
 
-        defaultInterfaceEg i2 = new defaultInterfaceEg();
-        i2.act();
+        ForEachLoop fe = new ForEachLoop();
+        fe.whatIsForEachLoop();
+
+        LambdaFeature lf = new LambdaFeature();
+        lf.whatIsLamdaFeature();
     }
 
 }