Test Files for practicing java 8 feature

src/main/java/logics/java8/test/TestJava8.java

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+/******************************************************************************
+
+                            Online Java Compiler.
+                Code, Compile, Run and Debug java program online.
+Write your code in this editor and press "Run" button to execute it.
+
+*******************************************************************************/
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class TestJava8 {
+
+    public static void main(String[] args) {
+
+        List<String> alpha = Arrays.asList("a", "b", "c", "d");
+
+        //Before Java8
+        List<String> alphaUpper = new ArrayList<>();
+        for (String s : alpha) {
+            alphaUpper.add(s.toUpperCase());
+        }
+
+        System.out.println(alpha); //[a, b, c, d]
+        System.out.println(alphaUpper); //[A, B, C, D]
+
+        // Java 8
+        List<String> collect = alpha.stream().map(String::toUpperCase).collect(Collectors.toList());
+        System.out.println(collect); //[A, B, C, D]
+
+        // Extra, streams apply to any data type.
+        List<Integer> num = Arrays.asList(1,2,3,4,5);
+        List<Integer> collect1 = num.stream().map(n -> n * 2).collect(Collectors.toList());
+        System.out.println(collect1); //[2, 4, 6, 8, 10]
+
+    }
+
+}