import java.lang.reflect.Field; public class ReflectFieldExample { private String name; public static void main(String[] args) throws IllegalAccessException, NoSuchFieldException { ReflectFieldExample example = new ReflectFieldExample(); Field field = example.getClass().getDeclaredField("name"); field.set(example, "John"); String value = (String) field.get(example); System.out.println("Field value: " + value); } }