java - ArrayList memory allocation, cross-generation reference gc issue

What is the memory allocation of ArrayList in JVM? {Code...} Continuously add BigObject, is its reference rela...

From [Javadiscussion group] 2017-05-17 10:07:27 0  1  908

java - I encountered a ResultSet result set problem, please look at the code?

The code in question is as follows: public ArrayList<menuentity> getMenuList(Connection con){ {c...

From [Javadiscussion group] 2017-05-17 10:07:26 0  1  877

java - How to map one-to-many in Mybatis

For example, there is an entity class {code...} I originally wrote this, but it was wrong T0T, how should I ma...

From [Javadiscussion group] 2017-05-17 10:07:25 0  3  578

Java master, please come in and see if there is any function in java that can process arrays into this form.

{Code...} **Using serialize in php, you can get the above form of the array. I don’t know if there is such a f...

From [Javadiscussion group] 2017-05-17 10:07:23 0  1  669

javascript - How to clear the browser cache after the tomcat service is started?

After the Tomcat service is started, js and css cannot be refreshed in real time due to browser cache. Is ther...

From [Javadiscussion group] 2017-05-17 10:07:22 0  7  750

What is the difference between <T> T and T in java?

Why is an error reported? Isn’t first the T type? And &lt;T&gt; What is the difference between T and T...

From [Javadiscussion group] 2017-05-17 10:07:21 0  3  743

java - Error when opening jar package

Usage: When building a jar package, I asked for help on how to solve this problem. Thank you.

From [Javadiscussion group] 2017-05-17 10:07:20 0  3  626

How should the database be designed for dynamic forms?

The requirement is to enter form information in the background management interface, stipulate which forms (ca...

From [Javadiscussion group] 2017-05-17 10:07:19 0  4  1258

How to solve Hibernate's multi-threading problem?

I have a page that implements a function. Triggering this function will execute two java functions at the same...

From [Javadiscussion group] 2017-05-17 10:07:17 0  1  585

javascript - bootstrap-table receives background data and reports an error, 'total' undefined

bootstrap-table ajax request, receiving background json data error, Cannot read property 'total' of undefined....

From [Javadiscussion group] 2017-05-17 10:07:16 0  2  925

Java - memory overflow occurs when loading images using glide

Pending exception java.lang.OutOfMemoryError: Failed to allocate a 1125012 byte allocation with 784248 free by...

From [Javadiscussion group] 2017-05-17 10:07:15 0  1  1117

javascript - The public files of the project such as pictures, JS and other files are placed on the cloud. The webroot only places jsp files. How to introduce static files through the configuration file? Please ask for guidance.

1. Now we need to put the static files of the project such as js and pictures on the cloud and import them loc...

From [Javadiscussion group] 2017-05-17 10:07:14 0  2  559

java - spring transaction not rolled back

1. Spring transactions will not be rolled back. I have tried all the online methods but to no avail. 2. The co...

From [Javadiscussion group] 2017-05-17 10:07:12 0  2  565

java - The operation cannot be performed because the OLE DB provider "SQLNCLI" for linked server "***" cannot start a distributed transaction. Solution?

Users have asked our project to process data from their original projects at the same time. The databases of t...

From [Javadiscussion group] 2017-05-17 10:07:11 0  2  765

java - What does [boot] after maven project mean?

What does [boot] behind this maven project mean? It didn’t exist at the beginning, but it appeared when I clic...

From [Javadiscussion group] 2017-05-17 10:07:10 0  4  833