start with java code: public class TUtil { public static <T> T getT(Object o, int i) { try { return ((Class<T>) ((ParameterizedType) (o.getClass() .getGenericSuperclass())).getActualTypeArguments...
use ParameterizedType in the class to get the generic class of the entity class of the class has the following code: public class Demo<T> { private Class<T> clazz; public T getDemo() throws InstantiationException, Illegal...
description wants to be a data component similar to orm. If you encounter this problem, convert the response of a [] map [string] interface {} into a structure array of the corresponding type . ideas read the source code of orm and some articles on...
Thread 1 and thread 2 get the a method of class A through reflection at the same time, so which part of the method obtained by thread 1 and thread 2 is in memory? Are thread 1 and thread 2 getting the same method address? ...
about the problem of Java, we usually get the results by using the stack as a keyword to the search engine. :) the problem encountered this time is a bit interesting, and the procedure is very simple, so just ask a question. what s wrong with the fol...
is there any other way to dynamically create objects by reflection ...
< html > <head> <title>bootstrap< title> <meta charset="UTF-8"> <link rel="stylesheet" href=".. css bootstrap.css"> <link rel="stylesheet" href=".. css boot...
I have introduced a local jar package into my maven project, as shown in figure jarslf4jslf4j: is there a way to sort the slf4j referenced in my jar package? exclusions should not work here. ...
We know that DCL double lock is written as: synchronized (SingletonLazy5.class) { if(null == singletonLazy) { singletonLazy = new SingletonLazy5(); } } ...
the business allows customers to apply for authorization. Only when authorized can customers access our website on the computer applying for authorization. Originally, we wanted to use js to obtain the mac address of the client, but this js can only be i...
Hello, everyone. I have a question to ask you. I have a string s: = "ts_flow " and then I want to take the first index. I used to use python, just say python is s [1]. But take it out and it s a number. I want to make the judgment of if s [1] = " " an...