java - What is the role of the afterNodeInsertion method in HashMap?

Environment: jdk1.8 Problem: When learning HashMap, I found that the afterNodeInsertion method {code...} was c...

From [Javadiscussion group] 2017-05-17 10:03:41 0  1  970

java - spring mvc integrates hibernate5 access error Could not locate cfg.xml resource

Spring MVC integrates the Hibernate5 framework—the database connection and other information has been configur...

From [Javadiscussion group] 2017-05-17 10:03:38 0  2  2124

Java data type conversion, what is the difference between parseXXX(String) or valueOf(String)?

What is the difference between parseparseXXX(String) and valueOf(String) of basic type packaging classes?

From [Javadiscussion group] 2017-05-17 10:03:37 0  1  845

java - In hibernate bidirectional many-to-many relationship, how to automatically update the intermediate table when one of the parties is modified?

In the many-to-many relationship between the employee table and the department table, when setting up the depa...

From [Javadiscussion group] 2017-05-17 10:03:35 0  2  605

javascript - When sending a request, there is often one more request before it is initiated. What are the reasons?

The interfaces are all CORS cross-domain. An extra request: Request Method: OPTIONS, no parameters are passed....

From [Javadiscussion group] 2017-05-17 10:03:33 0  4  564

java - When building a WordPress website, does the backend have to use php?

I recently wanted to build a small personal website. I saw that WordPress can be used to build a website easil...

From [Javadiscussion group] 2017-05-17 10:03:26 0  4  958

java - How does the program execute the top or ping command in the shell?

Sometimes a program is used to execute shell commands. But what if I execute a command like top or ping? This ...

From [Javadiscussion group] 2017-05-17 10:03:20 0  3  864

Little doubts about java generic classes

There is a class defined as class Gift<T>{...}. When I create a new Gift object, such as Gift&am...

From [Javadiscussion group] 2017-05-17 10:03:19 0  3  621

Compilation issues with Java generics

The source code is as follows and jumps to the prompt below. This code obviously cannot be compiled. I think o...

From [Javadiscussion group] 2017-05-17 10:03:13 0  1  534

java - Apache Tomcat security restriction bypass vulnerability (CVE-2016-8735)

How to patch like Tomcat patch

From [Javadiscussion group] 2017-05-17 10:03:10 0  1  1287

java - inputstream is converted to byte array and the array is out of bounds

public static byte[] readInputStream(InputStream inStream) throws Exception { {code...} } This is the way to d...

From [Javadiscussion group] 2017-05-17 10:03:02 0  2  799

java - solr sort by pinyin alphabetical order

There is a title field, and I want to sort it by the first letter of the pinyin. There is a method {code...} i...

From [Javadiscussion group] 2017-05-17 10:02:57 0  2  856

java - spring scheduled task execution exception

The task was originally executed at 1 am every day from Monday to Friday. After checking the log, I found that...

From [Javadiscussion group] 2017-05-17 10:02:53 0  1  1026

JAVA, how to add 100,000 Int values ​​more efficiently

How to add 100,000 int values ​​more efficiently? I was sorting out the interview questions today and saw this...

From [Javadiscussion group] 2017-05-17 10:02:50 0  2  1057

java - IDEA restarts tomcat after modifying the code, but it still seems to be the previous code

I don’t know what’s going on. Every time after restarting the code, when testing the interface, the results ob...

From [Javadiscussion group] 2017-05-17 10:02:45 0  1  863