package reflectlearn; import java.lang.reflect.Field; public class AccessPrivate { public static void main(String[] args) throws ClassNotFoundException, SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException { Class<?> clazz = Class.forName("reflectlearn.PrivateProps"); Field strField = clazz.getDeclaredField("strVal"); strField.setAccessible(true); PrivateProps pp = new PrivateProps(); strField.set(pp, "asdfasdf"); System.out.println("Done"); } }