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java - How to better calculate the average of two Array data in the same format

There are two JSONArrays with the same format. One is the new data saveArray: [{"name":"name1&q...

From [Javadiscussion group] 2017-06-23 09:13:23 0  2  906

javascript - Qiniu js SDK delete files

The js SDK only provides APIs for uploading and image processing. I found that the java SDK provides various f...

From [Javadiscussion group] 2017-06-23 09:13:19 0  2  1128

java - Should I package the tool class I made into a jar and reference it every time, or should I paste the code every time I use it?

When we first started writing programs in Java, we wrote several tool classes of our own based on our projects...

From [Javadiscussion group] 2017-06-23 09:13:16 0  4  907

Data structure - How is Java flipped linked list implemented?

{Code...} How does this code flip in the while loop? I want to be more detailed. I debugged it several times a...

From [Javadiscussion group] 2017-06-23 09:13:13 0  2  976

java - The SSH framework uses ajax to detect user names on the added page, and there is a problem with querying the SQL statement.

Error message {code...} JSP page {code...} The action layer method uses domain model driver {code...} DAO laye...

From [Javadiscussion group] 2017-06-23 09:13:12 0  2  908

java - Why are the member variables in the interface not constants?

{Code...} Doesn’t it mean that the member variables in the interface are constants? Why can't I use the prompt...

From [Javadiscussion group] 2017-06-23 09:13:11 0  4  955

Are there any concurrency issues when using Java8's stream to operate external collections?

Description: Take out the non-DataTime in cp. Is the following code reasonable? Is there any concurrency probl...

From [Javadiscussion group] 2017-06-23 09:13:05 0  1  1030

What is unsafe in java and how to understand it better?

If you don't understand the title, I'm here to ask for advice.

From [Javadiscussion group] 2017-06-23 09:13:04 0  1  845

java - IDEA checks out the project from SVN and runs it on tomcat. Please provide detailed process

I've been tinkering with ideas for the past two days, and I just started working not long ago. I used to do it...

From [Javadiscussion group] 2017-06-23 09:13:03 0  2  1491

java - Is it necessary to add signature verification based on HTTPS two-way authentication?

Direct communication between enterprise systems is based on HTTPS two-way authentication. Is it necessary to a...

From [Javadiscussion group] 2017-06-23 09:13:02 0  2  1171

java - The Controller layer of spring still needs to write @Resource to inject the service layer object. Is this decoupling?

1. The Controller layer of spring still needs to write @Resource to inject the service layer object. Is this d...

From [Javadiscussion group] 2017-06-23 09:12:59 0  2  1084

javascript - textStatus error in ajax is reported as parsererror?

The textStatus error in ajax is parsererror. {Code...} Please give me some advice. I have never encountered th...

From [Javadiscussion group] 2017-06-23 09:12:53 0  4  1081

java - How does Spring create different instances of a specific type of bean based on the parameters passed in at startup and call these instances in subsequent business?

Note that instead of simply configuring the bean scope into multiple instances, you need to create different i...

From [Javadiscussion group] 2017-06-23 09:12:52 0  1  875

java - What do the parameters in idea git update project mean?

What does using Shelve come from and why when I use merge+using stash, my locally modified code will be delete...

From [Javadiscussion group] 2017-06-23 09:12:50 0  1  1514

Sharding - Java backend code implementation and best practices after database sharding and table cutting

In the current business, some tables are getting larger and larger, and the pressure is very high when reading...

From [Javadiscussion group] 2017-06-23 09:12:49 0  5  1091