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kandi X-RAY | JDK Summary
kandi X-RAY | JDK Summary
JDK source code reading notes
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Top functions reviewed by kandi - BETA
- Main entry point
- A test program
- Connects to BaidU server
- Command entry point
- Start server
- Main method for testing
- Start the demo
- Signal the signal
- Perform nio read
- Connects to localhost
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'm currently working on a project running a jboss backend server (server-ear:ear exploded artefact) and a java gui (java 11) as frontend.
The backend contains a java service bean which accesses a database server and throws a custom exception (extends exceptions), if the variable is not found. The GUI catches the custom exceptions with a try and catch block.
The code is build and run inside of Intellij + Maven.
If i try to execute the code following arrow pops up at runtime:
...ANSWER
Answered 2021-Jun-15 at 10:54So for anyone interested what the problem was:
Since we are using a custom logger (ServiceLoggingInvocationHandler) which try catched the exceptions of an invoke method, the catched exceptions were already wrapped with an invocation exception and were not the original exceptions. To solve the problem we needed to unwrap the exceptions again before forwarding them.
Since the logger was only used in debugging mode and only when specified the problem was only occurring for me.
QUESTION
I need to push messages to external rabbitmq. My java configuration successfully declares queue to push, but every time I try to push, I have next exception:
...ANSWER
Answered 2021-Jun-15 at 07:19I'm struggling to understand how that code fits together, but this part strikes me as definitely wrong:
QUESTION
I know there are some other questions (with answers) to this topic. But no of these was helpful for me.
I have a postfix server (postfix 3.4.14 on debian 10) with following configuration (only the interesting section):
...ANSWER
Answered 2021-Jun-15 at 08:30Here I'm wondering about the line [in s_client]
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
You're apparently using OpenSSL 1.0.2, where that's a basically useless relic. Back in the days when OpenSSL supported SSLv2 (mostly until 2010, although almost no one used it much after 2000), the ciphersuite values used for SSLv3 and up (including all TLS, but before 2014 OpenSSL didn't implement higher than TLS1.0) were structured differently than those used for SSLv2, so it was important to qualify the ciphersuite by the 'universe' it existed in. It has almost nothing to do with the protocol version actually used, which appears later in the session-param decode:
QUESTION
I'm confused why a type that implements comparable isn't "implicitly comparable", and also why certain syntaxes of sortWith won't compile at all:
ANSWER
Answered 2021-Jun-11 at 10:35// Works but won't sort eq millis
val records = iter.toArray.sortWith(_.event_time.getTime < _.event_time.getTime)
QUESTION
I am trying to set up Flutter with Android Studio (Arctic Fox 2020.3.1 Beta 3) on my Macbook 13" M1 and I can't with flutter doctor I get this information:
...ANSWER
Answered 2021-Jun-13 at 20:39I'm having exactly that issue with my M1 Mac Mini.
QUESTION
Been trying for days to fix this problem. Just trying to recreate a simple "Hello World" REST api with Jersey 3 and Tomcat 10 in maven. After creating the WAR file of the project I can access the index.jsp (created by default when I created the project) but when I try to access the "/helloworld" endpoint I get error 404. Here's my code:
pom.xml
...ANSWER
Answered 2021-Jun-14 at 13:32Jersey requires an appropriate container module to deploy the REST application. You added jersey-container-jdk-http, which works with a JDK Http Server (cf. documentation).
What you need instead is the jersey-container-servlet module (cf. documentation), which works in every Servlet 3.x environment. Therefore you need to add this dependency:
QUESTION
The error I'm getting in eclipse:
Access restriction: The method Unsafe.{the methods} is not API (restriction from required library '{path to jdk1.8.0_291}/jre/lib/rt.jar')
and
Access restriction: The Type Unsafe is not API. (restriction from required library '{path to jdk1.8.0_291}/jre/lib/rt.jar')
Using JDK 8, for an old version of a game I'm modding. Any answers are appreciated, thanks!
...ANSWER
Answered 2021-Jun-14 at 06:17You can make Unsafe accessible by defining an access rule.
Open the project "Properties" and go to the "Libraries" page.
Expand the "JRE System Library" section in the list and you should be able to select an "Access Rules" entry.
Click the "Edit..." button to define a new access rules. Enter the rule:
QUESTION
How SSL works is well know as it's quite widely used and described well every where. In short - SSL involves
- Verifying server authenticity by client by verifying the servers X.509 certificate.
- Then arriving at a symmetric key using diffie-hellman key exchange algorithm.
But I am not sure what happens withsecurity.protocol=SASL_SSL. Clients and Server communication of few technologies like Kafka etc rely on this security protocol as one of the option. Here I am worried about the point 1 above. If i get a wrong broker address (as a trick ) from some one, does SASL_SSL verify the server certificate or not is my question. If it does, then I can be sure that the received broker is not genuine and my application will not publish or subscribe to messages from this server and my data is safe.
Edit 1: Following @steffen-ullrich answer and comments And little more dig, i see below. Looks like the certificate validation is happening when used through chrome and probably its loaded in the cacerts too. So the java code is able to authenticate the server.. so seems ok..
Edit 2: Right the certificates DST and ISRG are preloaded in the JDK 11 cacerts, so the client is able to authenticate the server as commented by Stephen.
...ANSWER
Answered 2021-Jun-13 at 02:57What you are asking is related to another configuration please read the following description.
ssl.endpoint.identification.algorithm The endpoint identification algorithm used by clients to validate server host name. The default value is https. Clients including client connections created by the broker for inter-broker communication verify that the broker host name matches the host name in the broker’s certificate. Disable server host name verification by setting ssl.endpoint.identification.algorithm to an empty string. Type: string Default: https Importance: medium
QUESTION
I have an Eclipse application which on execution giving below error -
...ANSWER
Answered 2021-Jun-13 at 15:15The log shows that the ResourcesPlugin is being found but its plug-in activator is getting a null pointer exception when it tries to get the IContentTypeManager.
The content type manager is provided using OSGi declarative services but you have not included org.apache.felix.scr which deals with this.
So at a minimum you need to include org.apache.felix.scr and start it in the section:
QUESTION
As background I'm using Netbeans 8.2 and JDK 1.8.
I have a menu class into a package A in which two of its options are add products and show the arrays (Bodegas/Storages).
Another package B contains Products class.
First I'm required to create the array of 1 row and 3 columns and fill it with zeros in Products class. So the first thing I do in the main is call CrearBodegas from Products class:
...ANSWER
Answered 2021-Jun-13 at 07:53for (int row = 0; row > Bodega1.length; row++) {
for (int col = 0; col > Bodega1[0].length; col++) {
System.out.println(Bodega1[row][col]);
}
System.out.println("\n");
}
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