manual alorithm (#2096)

* moving jmh into libraries module

* refactoring jmh

* Update pom.xml

* manual algorightm

* with BM result

* fix for space issue

* Fixed indentation

libraries/src/main/java/com/baeldung/jmh/JmhDemo.java

@@ -6,9 +6,7 @@ import org.openjdk.jmh.Main;
 import org.openjdk.jmh.runner.RunnerException;
 
 public class JmhDemo {
-
     public static void main(String[] args) throws RunnerException, IOException {
-	  Main.main(args);
+        Main.main(args);
     }
-
 }

libraries/src/main/java/com/baeldung/jmh/warmup/MainApplication.java

@@ -0,0 +1,19 @@
+package com.baeldung.jmh.warmup;
+
+public class MainApplication {
+
+    static long start;
+    static long end;
+
+    static {
+        ManualClassLoader.load();
+    }
+
+    public static void main(String[] args) {
+        start = System.nanoTime();
+        ManualClassLoader.load();
+        end = System.nanoTime();
+        System.out.println("Total time taken : " + (end - start));
+    }
+
+}

libraries/src/main/java/com/baeldung/jmh/warmup/ManualClassLoader.java

@@ -0,0 +1,17 @@
+package com.baeldung.jmh.warmup;
+
+import com.baeldung.jmh.warmup.dummy.Dummy;
+
+public class ManualClassLoader {
+
+    public static void load() {
+
+        for (int i = 0; i < 100000; i++) {
+            // load all(or most) important classes
+            Dummy dummy = new Dummy();
+            dummy.m();
+        }
+
+    }
+
+}

libraries/src/main/java/com/baeldung/jmh/warmup/dummy/Dummy.java

@@ -0,0 +1,9 @@
+package com.baeldung.jmh.warmup.dummy;
+
+public class Dummy {
+
+    public void m() {
+
+    }
+
+}