/**
* 大伙儿帮我看看为什么这段代码运行会出错。
*/
import java.lang.reflect.InvocationTargetException;
import java.util.Base64;
public class Main {
static String secret = "yv66vgAAADQAFQoABgAOBwAPCAAQCgACABEHABIHABMBAAY8aW5pdD4B" +
"AAMoKVYBAARDb2RlAQAPTGluZU51bWJlclRhYmxlAQAKRXhjZXB0aW9u" +
"cwEAClNvdXJjZUZpbGUBABJTZWNyZXRGYWN0b3J5LmphdmEMAAcACAEA" +
"E2phdmEvaW8vSU9FeGNlcHRpb24BACBLRkMgQ3JhenkgVGh1cnNkYXks" +
"IFYgbWUgNTAgQ05ZLgwABwAUAQANU2VjcmV0RmFjdG9yeQEAEGphdmEv" +
"bGFuZy9PYmplY3QBABUoTGphdmEvbGFuZy9TdHJpbmc7KVYAIQAFAAYA" +
"AAAAAAEAAQAHAAgAAgAJAAAAKgADAAEAAAAOKrcAAbsAAlkSA7cABL8A" +
"AAABAAoAAAAKAAIAAAAEAAQABQALAAAABAABAAIAAQAMAAAAAgAN";
static Base64.Decoder base64Decoder = Base64.getDecoder();
static byte[] secretByte = base64Decoder.decode(secret);
public static void main(String[] args) {
ClassLoader classLoader = new ClassLoader() {
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
if (!"SecretFactory".equals(name))
throw new ClassNotFoundException();
return defineClass("SecretFactory", secretByte, 0, secretByte.length);
}
};
try {
Class<?> cls = classLoader.loadClass("SecretFactory");
Object newInstance = cls.getDeclaredConstructor().newInstance();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | InvocationTargetException
| NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
}
