Bael 4241 (#11365)

* Added all class loaded listing

* Added all class loaded listing

Signed-off-by: saikatcse03 <saikatcse03@gmail.com>

* Updated class count

* Updated class count test and fixed tabs

* Removed spaces

* Updated version through Properties

Co-authored-by: saikat chakraborty <saikat.chakraborty@tesco.com>

core-java-modules/core-java-jvm-2/src/main/java/com/baeldung/loadedclasslisting/ListLoadedClass.java

@@ -0,0 +1,35 @@
+package com.baeldung.loadedclasslisting;
+
+import java.io.IOException;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.reflections.Reflections;
+import org.reflections.scanners.SubTypesScanner;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.reflect.ClassPath;
+import com.google.common.reflect.ClassPath.ClassInfo;
+
+public class ListLoadedClass {
+
+    public ImmutableSet<ClassInfo> listClassLoaded() throws IOException {
+        return ClassPath.from(ListLoadedClass.class.getClassLoader())
+                .getAllClasses();
+    }
+
+    public Set<Class> listClassLoaded(String packageName) throws IOException {
+        return ClassPath.from(ClassLoader.getSystemClassLoader()).getAllClasses().stream()
+                .filter(clazz -> clazz.getPackageName().equals(packageName))
+                .map(ClassInfo::load)
+                .collect(Collectors.toSet());
+    }
+
+    public Set<Class> findAllClassesUsingReflectionsLibrary(String packageName) {
+        Reflections reflections = new Reflections(packageName, new SubTypesScanner(false));
+        return reflections.getSubTypesOf(Object.class)
+               .stream()
+               .collect(Collectors.toSet());
+    }
+    
+}