jdk | JDK main-line development https://openjdkorg/projects/jdk | Blockchain library
kandi X-RAY | jdk Summary
kandi X-RAY | jdk Summary
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Top functions reviewed by kandi - BETA
- do the action based on the action number
- Initialize attribute readers .
- Get the maximum value for this field .
- Initialize the component defaults .
- Setup the metadata .
- Returns the user object path .
- Called when the document starts .
- This method applies the specified facet to the object .
- Install the key bindings for each field .
- Outputs the command line options .
jdk Key Features
jdk Examples and Code Snippets
Lines of Code : 14License : Permissive (MIT License)
Copypublic static void jdkFlatMapping() {
System.out.println("JDK FlatMap -> Uncomment line 68 to test");
System.out.println("====================================");
int[][] intOfInts = new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, private static void coreJDK(Set set) {
Set unmodifiableSet = Collections.unmodifiableSet(set);
set.add("Costa Rica");
System.out.println(unmodifiableSet);
} public Set> getJDKFunctinalInterfaces() {
Reflections reflections = new Reflections("java.util.function");
Set> typesSet = reflections.getTypesAnnotatedWith(FunctionalInterface.class);
return typesSet;
} Community Discussions
Trending Discussions on jdk
QUESTION
I've got a project that is working fine in windows os but when I switched my laptop and opened an existing project in MacBook Pro M1. I'm unable to run an existing android project in MacBook pro M1. first I was getting
Execution failed for task ':app:kaptDevDebugKotlin'. > A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution > java.lang.reflect.InvocationTargetException (no error message)
this error was due to the Room database I applied a fix that was adding below library before Room database and also changed my JDK location from file structure from JRE to JDK.
...kapt "org.xerial:sqlite-jdbc:3.34.0"
ANSWER
Answered 2022-Apr-04 at 18:41To solve this on a Apple Silicon M1 I found three options
AUse NDK 24
QUESTION
I have newly installed
...ANSWER
Answered 2021-Jul-28 at 07:22You are running the project via Java 1.8 and add the --add-opens option to the runner. However Java 1.8 does not support it.
So, the first option is to use Java 11 to run the project, as Java 11 can recognize this VM option.
Another solution is to find a place where --add-opens is added and remove it.
Check Run configuration in IntelliJ IDEA (VM options field) and Maven/Gradle configuration files for argLine (Maven) and jvmArgs (Gradle)
QUESTION
I'm trying to initiate a Springboot project using Open Jdk 15, Springboot 2.6.0, Springfox 3. We are working on a project that replaced Netty as the webserver and used Jetty instead because we do not need a non-blocking environment.
In the code we depend primarily on Reactor API (Flux, Mono), so we can not remove org.springframework.boot:spring-boot-starter-webflux dependencies.
I replicated the problem that we have in a new project.: https://github.com/jvacaq/spring-fox.
I figured out that these lines in our build.gradle file are the origin of the problem.
...ANSWER
Answered 2022-Feb-08 at 12:36This problem's caused by a bug in Springfox. It's making an assumption about how Spring MVC is set up that doesn't always hold true. Specifically, it's assuming that MVC's path matching will use the Ant-based path matcher and not the PathPattern-based matcher. PathPattern-based matching has been an option for some time now and is the default as of Spring Boot 2.6.
As described in Spring Boot 2.6's release notes, you can restore the configuration that Springfox assumes will be used by setting spring.mvc.pathmatch.matching-strategy to ant-path-matcher in your application.properties file. Note that this will only work if you are not using Spring Boot's Actuator. The Actuator always uses PathPattern-based parsing, irrespective of the configured matching-strategy. A change to Springfox will be required if you want to use it with the Actuator in Spring Boot 2.6 and later.
QUESTION
It seems that JDK 8 and JDK 13 have different floating points.
I get on JDK 8, using Math:
ANSWER
Answered 2022-Mar-20 at 18:16This seems to be caused by a JVM intrinsic function for Math.cos, which is described in the related issue JDK-8242461. The behavior experienced there is not considered an issue:
The returned results reported in this bug are indeed adjacent floating-point values [this is the case here as well]
[...]
Therefore, while it is possible one or the other of the returned values is outside of the accuracy bounds, just have different return values for Math.cos is not in and of itself evidence of a problem.
For reproducible results, use the StrictMath.cos instead.
And indeed, disabling the intrinsics using -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_dcos (as proposed in the linked issue), causes Math.cos to have the same (expected) result as StrictMath.cos.
So it appears the behavior you are seeing here is most likely compliant with the Math documentation as well.
QUESTION
ANSWER
Answered 2021-Sep-09 at 02:50You have to manually install java on your PC but install the JRE(Java Runtime Environment) not the JDK (Java Development Kit). The JRE comes packed with all you'll need for flutter.
I think the one AS comes with is the JDK not the JRE
QUESTION
I am trying to compile and load dynamically generated Java code during runtime. Since both ClassLoader::defineClass and Unsafe::defineAnonymousClass have serious drawbacks in this scenario, I tried using hidden classes via Lookup::defineHiddenClass instead. This works fine for all classes that I tried to load, except for those that call lambda expressions or contain anonymous classes.
Calling a lambda expression throws the following exception:
...ANSWER
Answered 2022-Feb-23 at 18:19You can not turn arbitrary classes into hidden classes.
The documentation of defineHiddenClass contains the sentence
- On any attempt to resolve the entry in the run-time constant pool indicated by
this_class, the symbolic reference is considered to be resolved toCand resolution always succeeds immediately.
What it doesn’t spell out explicitly is that this is the only place where a type resolution ever ends up at the hidden class.
But it has been said unambiguously in bug report JDK-8222730:
For a hidden class, its specified hidden name should only be accessible through the hidden class's 'this_class' constant pool entry.
The class should not be accessible by specifying its original name in, for example, a method or field signature even within the hidden class.
Which we can check. Even a simple case like
QUESTION
Springfox 3.0.0 is not working with Spring Boot 2.6.0, after upgrading I am getting the following error
...ANSWER
Answered 2021-Dec-01 at 02:17I know this does not solve your problem directly, but consider moving to springdoc which most recent release supports Spring Boot 2.6.0. Springfox is so buggy at this point that is a pain to use. I've moved to springdoc 2 years ago because of its Spring WebFlux support and I am very happy about it. Additionally, it also supports Kotlin Coroutines, which I am not sure Springfox does.
If you decide to migrate, springdoc even has a migration guide.
QUESTION
I have installed Android Studio Canary 2020.3.1.22 and trying to run Flutter project on Apple Silicon(ARM) Mac. Unfortunately, it is giving me this error when I try to run default flutter counter app.
Here is the error I am getting:
...ANSWER
Answered 2022-Jan-03 at 06:03Basically, I installed jdk using brew install java which was not compatible with my current gradle I guess. So
- I uninstalled java first using:
brew uninstall java - installed
JDK 8 or JDK 11from azul. - Installed gradle: gradle-6.9-all.zip
When done, everything worked smoothly.
QUESTION
I am running a Spring Boot app that uses WebClient for both non-blocking and blocking HTTP requests. After the app has run for some time, all outgoing HTTP requests seem to get stuck.
WebClient is used to send requests to multiple hosts, but as an example, here is how it is initialized and used to send requests to Telegram:
WebClientConfig:
...ANSWER
Answered 2021-Dec-20 at 14:25I would propose to take a look in the RateLimiter direction. Maybe it does not work as expected, depending on the number of requests your application does over time. From the Javadoc for Ratelimiter: "It is important to note that the number of permits requested never affects the throttling of the request itself ... but it affects the throttling of the next request. I.e., if an expensive task arrives at an idle RateLimiter, it will be granted immediately, but it is the next request that will experience extra throttling, thus paying for the cost of the expensive task." Also helpful might be this discussion: github or github
I could imaginge there is some throttling adding up or other effect in the RateLimiter, i would try to play around with it and make sure this thing really works the way you want. Alternatively, consider using Spring @Scheduled to read from your queue. You might want to spice it up using embedded JMS for further goodies (message persistence etc).
QUESTION
Today I updated my java version from 16 to 17 and I found that sealed class is a new feature in it. I think it can be declared like this -
ANSWER
Answered 2021-Sep-17 at 15:04You can follow this link for examples.
In short sealed classes gives you the control of which models, classes etc. that can implement or extend that class/interface.
Example from the link:
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Install jdk
You can use jdk like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the jdk component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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