1. Create a Person class, write a few methods
seday18c Package Penalty for;
/ **
* @author xingsir
* create a Person class, write a few method
* /
public class Person {
public void EAT () {
System.out.println ( "I am eating");
}
public void RUN ( ) {
System.out.println ( "I run");
}
// have added Private method for testing
Private void EAT (String name) {
System.out.println ( "I" + name + ", I eat ");
}
public void eAT (String name, int COUNT) {
System.out.println (" I "+ name +", I was eating "+ count +" bullfrogs ");
}
}
2. Use reflection to invoke a private method
seday18c Package;
Import the java.lang.reflect.Method;
/ **
* @author xingsir
* using reflection to invoke the private method
* /
public class ReflectDemo5 {
public static void main (String [] args) throws Exception {
// static by Class forName method of loading the Person
class CLS = the Class.forName ( "seday18c.Person");
// instantiate an object method
object cls.newInstance O = ();
/ *
* class outside the encapsulation by reflection destroys the private calling method If it is not necessary to operate or design requirements, this is not recommended.
* /
Method, m = cls.getDeclaredMethod ( "EAT", String.class);
// Set the access operation (without being given a direct call setting) before accessing the private methods
m.setAccessible (to true);
m.invoke (O, " Pig ");
}
}