Try this Object obj = ois.readObject(); // Check it’s an ArrayList if (obj instanceof ArrayList<?>) { // Get the List. ArrayList<?> al = (ArrayList<?>) obj; if (al.size() > 0) { // Iterate. for (int i = 0; i < al.size(); i++) { // Still not enough for a type. Object o = al.get(i); if (o … Read more
A bit of conjecture here. It is possible for an object to be finalized and garbage collected even if there are references to it in local variables on the stack, and even if there is an active call to an instance method of that object on the stack! The requirement is that the object be … Read more
It is Ctrl+Alt+← and Ctrl+Alt+→. See this help page.
I know its an old question, but stumbled here from Google. I already had proxy in place, just needed to speed up with concurrent downloads. You can using mvn option: -Dmaven.artifact.threads=30 Source: https://maven.apache.org/guides/mini/guide-configuring-maven.html Configuring Parallel Artifact Resolution By default, Maven 2.1.0+ will download up to 5 artifacts (from different groups) at once. To change the … Read more
The EntityManager interface belongs to JPA and is implemented by JPA providers (such as Eclipse), not Spring, and it has its own injection annotation: @PersistenceContext. EntityManager objects are transaction-scoped and should not be exposed as beans as you’re doing. Instead, either use the JPA annotation to inject the EntityManager: @PersistenceContext EntityManager em; or, since it … Read more
I did not have an Cucumber feature installed so the problem in my setup was not related to it. what did help me is updating the maven plugin settings in my pom file as below. <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.3.1</version> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> </plugin>
Something like this? BorderLayout layout = (BorderLayout)panel.getLayout(); panel.remove(layout.getLayoutComponent(BorderLayout.CENTER));
Log4j 2 doesn’t support the Log4j v1 “.properties” format anymore (yet, since v2.4, Log4j supports a Property format, but its syntax is totally different from v1 format). New formats are XML, JSON, and YAML, see the documentation (note: if you used one of these formats in a file called “.properties”, it may be confusing). To … Read more
All database statements are executed within the context of a physical transaction, even when we don’t explicitly declare transaction boundaries (BEGIN/COMMIT/ROLLBACK). If you don’t declare the transaction boundaries, then each statement will have to be executed in a separate transaction. This may even lead to opening and closing one connection per statement. Declaring a service … Read more