First, the server component declares a ThreadLocal<User> variable, CURRENT_USER (line 1 in the code snippet below). When serve(...) is executed in a request-handling thread, it writes a suitable user to the thread-local variable (line 2), and then it calls the following code to ...
Virtual threads.Let’s start with the big one: After two rounds of preview with barely any changes,virtual threads are finalin Java 21. Now web frameworks are off to the races because they need to let you easily configure using virtual threads instead of platform threads to handle requests. ...
Bug fixes and any other changes are listed below in date order, most current BPR first. Note that bug fixes in previous BPR are also included in the current BPR. To determine the version of your JDK software, use the following command: java -version Changes in Java SE 8u20 b32 Bug ...
One means of detecting the cause of this leak is shown in the following image (click to zoom), generated using Java VisualVM with aheapdump. Here, we see that50% of Hashtable$Entry objects are in the heap, while the second line points us to theMemLeakclass. Thus, the memory leak is...
Multiple variables in one declaration Enabled No highlighting, only fix Nested method call Disabled Warning Null value for Optional type Enabled Warning Objects.equals() can be replaced with equals() Enabled No highlighting, only fix Optional can be replaced with sequence of if statements Enabled No...
As the return type is void, we might expect that this is an in-place sort, and this is indeed the case. One consequence of default methods is that when implementing multiple interfaces, it’s possible that two or more interfaces may contain a default method with a completely identical name...
When it requests a connection, an application obtains one from the pool. When an application closes a connection, the connection is returned to the pool.Applications that use the Persistence API specify the DataSource object they are using in the jta-data-source element of the persistence.xml ...
You can have more than one function in a project. However, don't put your functions into separate jars. Using multiple jars in a single function app isn't supported. TheFunctionAppin the target directory is what gets deployed to your function app in Azure. ...
Use the Step Into (F7), Step Over (F8), Step Out (Ctrl+F7) commands to go through the Ant script one line at a time. View the values of instantiated properties in the Local Variables window. Set a watch on a property by choosing Run > New Watch (Ctrl+Shift+F7). Set a line bre...
In some cases, there may be a small decline in peak application throughput as some processor cycles are devoted to concurrent collection activity; however, both average-and worst-case garbage collection pause times are often reduced by one or two orders of magnitude, allowing much smoother ...