I’m sure you’ve moved on by now, but I thought I’d answer anyway. Some of these answers give workarounds. What actually must happen is that you clean and re-publish your project to “activate” the new URI. This is done by right-clicking your server (in the Servers view) and choosing Clean. Then you start (or restart … Read more
MappedBy signals hibernate that the key for the relationship is on the other side. This means that although you link 2 tables together, only 1 of those tables has a foreign key constraint to the other one. MappedBy allows you to still link from the table not containing the constraint to the other table.
(Updated Apr 2021) First of all, “Java EE” has since Sep 2019 been renamed to “Jakarta EE“, starting with version 8. Historically, there was also the term “J2EE” which covered versions 1.2 until 1.4. The “Java EE” covered versions 5 until 8. See also Java Platform, Enterprise Edition, History on Wikipedia. What exactly do I … Read more
Java EE is a collection of specifications for developing and deploying enterprise applications. In general, enterprise applications refer to software hosted on servers that provide the applications that support the enterprise. The specifications (defined by Sun) describe services, application programming interfaces (APIs), and protocols. The 13 core technologies that make up Java EE are: JDBC … Read more
It’s your choice. There are basically three ways in a Java web application archive (WAR): 1. Put it in classpath So that you can load it by ClassLoader#getResourceAsStream() with a classpath-relative path: ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); InputStream input = classLoader.getResourceAsStream(“foo.properties”); // … Properties properties = new Properties(); properties.load(input); Here foo.properties is supposed to be placed … Read more
This seems to be added recently: https://repo1.maven.org/maven2/javax/servlet/javax.servlet-api/3.0.1/ <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency>
It is a bug in Eclipse. I had exactly the same problem, also on Ubuntu with Eclipse Java EE Juno. Here is the workaround that worked for me: Close Eclipse In {workspace-directory}/.metadata/.plugins/org.eclipse.core.runtime/.settings delete the following two files: org.eclipse.wst.server.core.prefs org.eclipse.jst.server.tomcat.core.prefs Restart Eclipse Source: eclipse.org Forum
Instead of using the deprecated Java EE modules, use the following artifacts. JAF (java.activation) JavaBeans Activation Framework (now Jakarta Activation) is a standalone technology (available on Maven Central): <dependency> <groupId>com.sun.activation</groupId> <artifactId>jakarta.activation</artifactId> <version>1.2.2</version> </dependency> (Source) CORBA (java.corba) From JEP 320: There will not be a standalone version of CORBA unless third parties take over maintenance of … Read more
According to the release-notes, Java 11 removed the Java EE modules: java.xml.bind (JAXB) – REMOVED Java 8 – OK Java 9 – DEPRECATED Java 10 – DEPRECATED Java 11 – REMOVED See JEP 320 for more info. You can fix the issue by using alternate versions of the Java EE technologies. Simply add Maven dependencies … Read more
Java SE = Standard Edition. This is the core Java programming platform. It contains all of the libraries and APIs that any Java programmer should learn (java.lang, java.io, java.math, java.net, java.util, etc…). Java EE = Enterprise Edition. From Wikipedia: The Java platform (Enterprise Edition) differs from the Java Standard Edition Platform (Java SE) in that … Read more