package aReflection; import java.lang.reflect.Constructor; import java.lang.reflect.Modifier; import java.util.Arrays; public class Main3 { public static void main(String[] args) throws Exception { Class cls = Student.class; Constructor c = cls.getDeclaredConstructor(String.class,int.class); printConstructorInfo(c); c.setAccessible(true); Student s = (Student) c.newInstance("xioaming",12); System.out.println(s.hello()); } private static void printConstructorInfo(Constructor c) { System.out.println(c); System.out.println("parameters: " + Arrays.toString(c.getParameterTypes())); System.out.println("method modifier? : " + c.getModifiers()); } }