From 6a7adf631d6baf22fb38e3694a344a5c8205fac2 Mon Sep 17 00:00:00 2001
From: Dmitriy Budim <46810751+dbudim@users.noreply.github.com>
Date: Wed, 8 Feb 2023 22:48:26 +0100
Subject: [PATCH] [Difference Between Class.forName() and
 Class.forName().newInstance()] sample code (#13451)

---
 .../baeldung/loadclass/MyClassForLoad.java    |  8 +++++
 .../baeldung/loadclass/LoadClassUnitTest.java | 30 +++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 core-java-modules/core-java/src/main/java/com/baeldung/loadclass/MyClassForLoad.java
 create mode 100644 core-java-modules/core-java/src/test/java/com/baeldung/loadclass/LoadClassUnitTest.java

diff --git a/core-java-modules/core-java/src/main/java/com/baeldung/loadclass/MyClassForLoad.java b/core-java-modules/core-java/src/main/java/com/baeldung/loadclass/MyClassForLoad.java
new file mode 100644
index 0000000000..e97848fb1f
--- /dev/null
+++ b/core-java-modules/core-java/src/main/java/com/baeldung/loadclass/MyClassForLoad.java
@@ -0,0 +1,8 @@
+package com.baeldung.loadclass;
+
+
+public class MyClassForLoad {
+
+    private String data = "some data";
+
+}
diff --git a/core-java-modules/core-java/src/test/java/com/baeldung/loadclass/LoadClassUnitTest.java b/core-java-modules/core-java/src/test/java/com/baeldung/loadclass/LoadClassUnitTest.java
new file mode 100644
index 0000000000..1f7eb139a2
--- /dev/null
+++ b/core-java-modules/core-java/src/test/java/com/baeldung/loadclass/LoadClassUnitTest.java
@@ -0,0 +1,30 @@
+package com.baeldung.loadclass;
+
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.InvocationTargetException;
+
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+
+public class LoadClassUnitTest {
+
+    @Test
+    public void whenUseClassForName_createdInstanceOfClassClass() throws ClassNotFoundException {
+        Class instance = Class.forName("com.baeldung.loadclass.MyClassForLoad");
+        assertInstanceOf(Class.class, instance, "instance should be of Class.class");
+    }
+
+    @Test
+    public void whenUseClassForNameWithNewInstance_createdInstanceOfTargetClas() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
+        Object instance = Class.forName("com.baeldung.loadclass.MyClassForLoad").newInstance();
+        assertInstanceOf(MyClassForLoad.class, instance, "instance should be of MyClassForLoad class");
+    }
+
+    @Test
+    public void whenUseClassForNameWithDeclaredConstructor_newInstanceCreatedInstanceOfTargetClas() throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
+        Object instance = Class.forName("com.baeldung.loadclass.MyClassForLoad").getDeclaredConstructor().newInstance();
+        assertInstanceOf(MyClassForLoad.class, instance, "instance should be of MyClassForLoad class");
+    }
+
+}