package www.cn.extend;
/** Animal
* 2019/07/04
* @author Administrator
*
*/
public class Animal {
public String mName;
public String mSex;
private String mSecret = "I hava a secret but I can't tell you know";
public String getSecret() {
return mSecret;
}
private void privateMethod() {
System.out.println("just a privateMethod");
}
}
package www.cn.extend;
/**
* Dog
* @author Administrator
*
*/
public class Dog extends Animal{
private String mJob;
public String mSkill;
protected String mDrive;
int mAge;
void keepFit(){
System.out.println(Dog.class.getSimpleName()+" to keepFit");
}
private void sooEsad(){
System.out.println("asdf");
}
}
package www.cn.extend;
import java.lang.reflect.Method;
public class Test {
public static void main(String[] args){
/**.class.getFields();
* 返回父类和子类中公共属性的Field数组。
*/
// Field[] fields = Dog.class.getFields();
// for (Field field:fields){
// System.out.println("this is a field from "+Dog.class.getSimpleName() +" : "+field);
// }
/**.class.getDeclaredFields();
* 返回子类中所有访问权限的属性。
*/
// Field[] declaredFields = Dog.class.getDeclaredFields();
// for (Field field:declaredFields){
// System.out.println("this is a declaredFields from "+Dog.class.getSimpleName() +" : "+field);
// }
/**.class.getMethods();
* 返回父类的公共方法
*/
// Method[] methods = Dog.class.getMethods();
// for (Method method:methods){
// System.out.println("this is a methods from "+Dog.class.getSimpleName() +" : "+method);
// }
/**.class.getDeclaredMethods();
* 返回子类所有权限的方法。
*/
Method[] declaredMethods = Dog.class.getDeclaredMethods();
for (Method method:declaredMethods){
System.out.println(declaredMethods[0].getName());
System.out.println("this is a declaredMethods from "+Dog.class.getSimpleName() +" : "+method);
}
}
}
