Custom ClassLoader (attempt fix Forge and Fabric)

JavaApp/src/main/java/net/kdt/pojavlaunch/PojavClassLoader.java

@@ -0,0 +1,20 @@
+package net.kdt.pojavlaunch;
+
+import java.net.*;
+
+/**
+ * This class loader is used as system class loader
+ * as a workaround to modded libraries for Java 8
+ * compatibility that safety casting to URLClassLoader:
+ * ((URLClassLoader) ClassLoader.getSystemClassLoader())
+ */
+public class PojavClassLoader extends URLClassLoader {
+    public PojavClassLoader(ClassLoader parent) {
+        super(new URL[0], parent);
+    }
+    
+    @Override
+    public void addURL(URL url) {
+        super.addURL(url);
+    }
+}