使用反射特性获取类的访问权限

public class ClassDemo {   public static void main(String[] args) {     ClassDemo c = new ClassDemo();     Class cls = c.getClass();     // returns the Java language modifiers for this class     int i = cls.getModifiers();     String retval = Modifier.toString(i);     System.out.println("Class Modifier = " + retval);   }}