EngineHiddenJavaClasses.java

package pyl;

public class EngineHiddenJavaClasses implements Runnable
{
    @Override
    public void run()
    {
        try
        {
            this.getClass().getClassLoader().loadClass("java.math.BigInteger");
        }
        catch (ClassNotFoundException e)
        {
            throw new RuntimeException("Could not load java.math.BigInteger", e);
        }
    }
}