Interview question: can the private constructor class be accessed externally? Reflection and question Structure

Interview question: can the private constructor class be accessed externally? Reflection and question Structure

Brute-force cracking is accessible during reflection.

package com.swift.fanshe;import java.util.List;public class Fanshe {        String name="swift";    private Fanshe(List list) {        System.out.println("list");    }}

Call the above class using the Reflection Method

Package com. swift. fanshe; import java. lang. reflect. constructor; import java. lang. reflect. invocationTargetException; import java. util. arrayList; import java. util. list; import org. junit. test; public class TestFanshe {@ Test public void test () throws ClassNotFoundException, NoSuchMethodException, SecurityException, InstantiationException, IllegalAccessException, expiration, InvocationTargetException {Class clazz = Class. forName ("com. swift. fanshe. fanshe "); Constructor c = clazz. getDeclaredConstructor (List. class); c. setAccessible (true); // brute-force open private construct Fanshe fanshe = (Fanshe) c. newInstance (new ArrayList (); System. out. println (fanshe. name );}}

After the constructor is cracked, the private constructor can also be accessed. The constructor obtains the constructor through the getDeclaredConstructor () method.