diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
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+
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b1ae5ad
--- /dev/null
+++ b/README.md
@@ -0,0 +1,38 @@
+# Java defineClass utility
+
+**defineClass()** is a **protected** method of the ClassLoader class that allows you to convert a byte array into an
+instance of the class '**Class**'.
+
+I added the ability to use this method in any ClassLoader and extended its functionality.
+
+## How to use
+
+```java
+/*
+ * Example of creating a new instance
+ * of a compiled Test.class
+ * with defineClass()
+ */
+try {
+ Class testClass = Define.defineClass(
+ getClass().getClassLoader(),
+ Paths.get("./classes/Test.class"));
+ testClass.newInstance();
+} catch (Exception e) {
+ throw new RuntimeException(e);
+}
+```
+## Open source
+
+The project is an open source project distributed under the Apache License 2.0
+
+## Getting started
+
+1. Download the latest build from releases
+2. Read the FAQ and examples
+3. Enjoy!
+
+## Status
+
+The project is in beta. Use at your own risk.
+
diff --git a/classes/Test.class b/classes/Test.class
new file mode 100644
index 0000000..97acdf5
Binary files /dev/null and b/classes/Test.class differ
diff --git a/src/ua/juniffiro/cl/definecl/Define.java b/src/ua/juniffiro/cl/definecl/Define.java
new file mode 100644
index 0000000..90bb69b
--- /dev/null
+++ b/src/ua/juniffiro/cl/definecl/Define.java
@@ -0,0 +1,231 @@
+package ua.juniffiro.cl.definecl;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.nio.ByteBuffer;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.ProtectionDomain;
+
+/**
+ * +-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+-+
+ * ( Created ) ( by ) ( @juniffiro )
+ * 27/02/2023
+ * +-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+-+
+ */
+public class Define {
+
+ /*
+ This utility is designed and uses part of
+ the class loader implementation.
+
+ Java 8 ClassLoader src
+ https://github.com/zxiaofan/JDK/blob/master/JDK1.8/src/java/lang/ClassLoader.java
+ */
+
+ /**
+ * Converts a ByteBuffer into an instance
+ * of class 'Class', with an optional
+ * ProtectionDomain.
+ *
+ * @param classLoader
+ * Target class loader
+ * @param name
+ * The expected binary name of the
+ * class, or null if not known
+ * @param buf
+ * ByteBuffer
+ * @param domain
+ * The ProtectionDomain of the class, or null.
+
+ * @return Instance of class 'Class'.
+ *
+ * @throws InvocationTargetException
+ * If an error occurs when calling
+ * a method via Reflection API
+ * @throws NoSuchMethodException
+ * If when calling a method via
+ * Reflection API the method was not found
+ * @throws IllegalAccessException
+ * If the Reflection API does not have
+ * access to the defineClass() method in ClassLoader
+ */
+ public static Class defineClass(ClassLoader classLoader,
+ String name,
+ ByteBuffer buf,
+ ProtectionDomain domain)
+ throws InvocationTargetException, NoSuchMethodException, IllegalAccessException {
+
+ byte[] data = new byte[buf.remaining()];
+ buf.get(data);
+
+ return defineClass(classLoader, name, data, 0, data.length, domain);
+ }
+
+ /**
+ * Converts the byte array obtained from
+ * the compiled class file into an instance
+ * of the class 'Class', with an optional
+ * ProtectionDomain.
+ *
+ * See {@link #defineClass(ClassLoader, String, byte[], int, int, ProtectionDomain)}
+ *
+ * @param pathToClass
+ * Path to compiled class file
+ *
+ * See {@link DefineUtils#getBytesOfClass(Path)}
+ */
+ public static Class defineClass(ClassLoader classLoader,
+ Path pathToClass,
+ ProtectionDomain domain)
+ throws NoSuchMethodException, IOException,
+ InvocationTargetException, IllegalAccessException {
+
+ byte[] data = DefineUtils.getBytesOfClass(pathToClass);
+
+ return defineClass(classLoader, null, data, 0, data.length, domain);
+ }
+
+ /**
+ * Converts the byte array obtained from
+ * the compiled class file into an instance
+ * of the class 'Class', with the ProtectionDomain
+ * obtained from the CodeSource file.
+ *
+ * See {@link #defineClass(ClassLoader, Path, ProtectionDomain)}
+ */
+ public static Class defineClass(ClassLoader classLoader, Path pathToClass)
+ throws NoSuchMethodException, IOException, InvocationTargetException,
+ IllegalAccessException {
+
+ return defineClass(classLoader, pathToClass, new ProtectionDomain(
+ DefineUtils.getCodeSource(pathToClass), null));
+ }
+
+ /**
+ * A method similar to
+ * {@link #defineClass(ClassLoader, Path, ProtectionDomain)}
+ * but takes the path to the file as a
+ * String instead of the Path parameter.
+ *
+ * @param pathToClass
+ * String type
+ * Path to compiled class file
+ */
+ public static Class defineClass(ClassLoader classLoader,
+ String pathToClass,
+ ProtectionDomain domain)
+ throws IOException, InvocationTargetException, NoSuchMethodException,
+ IllegalAccessException {
+
+ return defineClass(classLoader, Paths.get(pathToClass), domain);
+ }
+
+ /**
+ * A method similar to
+ * {@link #defineClass(ClassLoader, Path)}
+ * but takes the path to the class as a
+ * String instead of the Path parameter.
+ *
+ * @param pathToClass
+ * String type
+ * Path to compiled class file
+ */
+ public static Class defineClass(ClassLoader classLoader, String pathToClass)
+ throws NoSuchMethodException, IOException,
+ InvocationTargetException, IllegalAccessException {
+
+ return defineClass(classLoader, Paths.get(pathToClass));
+ }
+
+ /**
+ * Converts an array of bytes into an instance
+ * of the class 'Class' without ProtectionDomain
+ * (StaticData.defaultProtectionDomain)
+ *
+ * See {@link #defineClass(ClassLoader, String, byte[], int, int)}
+ */
+ public static Class defineClass(ClassLoader classLoader,
+ String name,
+ byte[] data,
+ int offset,
+ int len)
+ throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+
+ return defineClass(classLoader, name, data, offset, len, null);
+ }
+
+ /**
+ * Converts an array of bytes into an instance
+ * of the class 'Class'.
+ * Deprecated method and not recommended for use.
+ *
+ * See {@link #defineClass(ClassLoader, String, byte[], int, int)}
+ */
+ @Deprecated
+ public static Class defineClass(ClassLoader classLoader,
+ byte[] data,
+ int offset,
+ int len)
+ throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+
+ return defineClass(classLoader, null, data, offset, len);
+ }
+
+ /**
+ * Converts an array of bytes into an instance
+ * of the class 'Class' with an optional
+ * ProtectionDomain, using the Reflection API.
+ *
+ * @param classLoader
+ * Target class loader
+ * @param name
+ * The expected binary name of the
+ * class, or null if not known
+ * @param data
+ * The bytes that make up the class data
+ * @param offset
+ * The start offset in b of the class data
+ * @param len
+ * The length of the class data
+ * @param domain
+ * The ProtectionDomain of the class, or null.
+ *
+ * @return Instance of class 'Class'.
+ *
+ * @throws InvocationTargetException
+ * If an error occurs when calling
+ * a method via Reflection API
+ * @throws NoSuchMethodException
+ * If when calling a method via
+ * Reflection API the method was not found
+ * @throws IllegalAccessException
+ * If the Reflection API does not have
+ * access to the defineClass() method in ClassLoader
+ */
+ public static Class defineClass(ClassLoader classLoader,
+ String name,
+ byte[] data,
+ int offset,
+ int len,
+ ProtectionDomain domain)
+ throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+
+ Method method = ClassLoader.class.getDeclaredMethod(
+ "defineClass",
+ String.class,
+ byte[].class,
+ int.class,
+ int.class,
+ ProtectionDomain.class);
+ method.setAccessible(true);
+
+ Class clazz = (Class) method.invoke(classLoader, new Object[]{
+ name, data, offset, len, domain
+ });
+ method.setAccessible(false);
+
+ return clazz;
+ }
+}
diff --git a/src/ua/juniffiro/cl/definecl/DefineUtils.java b/src/ua/juniffiro/cl/definecl/DefineUtils.java
new file mode 100644
index 0000000..07912fc
--- /dev/null
+++ b/src/ua/juniffiro/cl/definecl/DefineUtils.java
@@ -0,0 +1,51 @@
+package ua.juniffiro.cl.definecl;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.CodeSigner;
+import java.security.CodeSource;
+
+/**
+ * +-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+-+
+ * ( Created ) ( by ) ( @juniffiro )
+ * 10/03/2023
+ * +-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+-+
+ */
+public class DefineUtils {
+
+ /**
+ * Get CodeSource from the class file.
+ *
+ * @param pathToClass
+ * Path to compiled class file
+ *
+ * @return Code source of class.
+ * @throws MalformedURLException
+ * Thrown to indicate that a malformed
+ * URL has occurred.
+ */
+ public static CodeSource getCodeSource(Path pathToClass) throws MalformedURLException {
+ return new CodeSource(pathToClass
+ .toFile()
+ .toURI()
+ .toURL(),
+ new CodeSigner[0]);
+ }
+
+ /**
+ * Get an array of bytes from the class file.
+ *
+ * @param pathToClass
+ * Path to class file
+ * @return Byte array of class file.
+ *
+ * @throws IOException
+ * If the class file is not found or
+ * there are other problems with the file
+ */
+ public static byte[] getBytesOfClass(Path pathToClass) throws IOException {
+ return Files.readAllBytes(pathToClass);
+ }
+}