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Tag: java

Postfix and OpenJDK 11: “No appropriate protocol (protocol is disabled or cipher suites are inappropriate)”

I know there are some other questions (with answers) to this topic. But none of these was helpful for me. I have a Postfix server (postfix 3.4.14 on Debian 10 (Buster)) with the following configuration (only the interesting section): If I check the configuration with OpenSSL, I get (please note that I have made the domain name unrecognizable with “xxxxxx.de”):

Install Java 16 on Raspberry Pi 4

I have tried multiple releases from here using : But after java -version I always get: Which means I have chosen the wrong release/architecture. Is there a release that works with Raspberry Pi’s or is there another way to install Java 16? Answer Answering my own question. cd [minecraft directory here] wget https://github.com/AdoptOpenJDK/openjdk16-binaries/releases/download/jdk16u-2021-05-08-12-45/OpenJDK16U-jdk_arm_linux_hotspot_2021-05-08-12-45.tar.gz tar xzf OpenJDK16U-jdk_arm_linux_hotspot_2021-05-08-12-45.tar.gz export PATH=$PWD/jdk-16.0.1+4/bin:$PATH java -version

Is there a way to see what my code looks like after type erasure?

I would like to know what tool can be used to view code after type erasure. For example, I’d like to see what the following code looks like after type erasure. I know that generic type information is stripped prior to final compilation, replacing type references with Object or boundary types, creating bridge methods, etc. I want to see the

How to add Java doc link in Eclipse for selenium 3.141.59

I have added selenium 3.141.59 to my project in Eclipse IDE. There are 7 jar files in selenium’s latest release. I tried to add Javadoc link – https://www.selenium.dev/selenium/docs/api/java/overview-summary.html in each jar file of selenium. But the Eclipse editor is not showing any documentation when hover over the selenium method. Can anyone please help me to solve this problem? Answer You

Java has too many level symbolic links

Well,I was trying to install forge on my linux machine(Kali-Linux).While on the was I was and still am unable to access the forge file(.jar).Due to an issue in which there is a lack of a command called “java”. The current problem I am having is sudo update-alternatives –install /usr/bin/java java /usr/lib/jvm/jdk-16.0.1/bin/java 1 while using this command I get a response

Creating new instance of concrete implementation in interface – is this an antipattern?

Let’s say I have the interface AuthorDao with two different implementation classes for example MyAuthorDaoImpl1 and MyAuthorDaoImpl2. In my interface AuthorDao I have some basic crud methods and one extra method which is static for getting a new instance of MyAuthorDaoImpl1. It looks like this: Questions Is this static method getInstance() is not an anti-pattern? Because in my opinion we

FasterXml – JsonSerializer HashMap

I’m using jackson-databind version 2.12.3 to serialize the return of an object that should return like this: My classes are these: The return is myObject: However with the default ObjectMapper the “link.setField” is ignored and the returned json is: I tried doing some tests with JsonSerializer but couldn’t do something generic for all classes that extend HashMap (these classes are

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