Kotlin generates very similar bytecode to Java, so the performance of Kotlin code is in most cases the same as the performance of the equivalent Java code. One way in which Kotlin can be faster than Java is inline functions. With inline functions, code using higher-order functions such as filter or map can be compiled … Read more
getParameterAnnotations returns one array per parameter, using an empty array for any parameter which doesn’t have any annotations. For example: import java.lang.annotation.*; import java.lang.reflect.*; @Retention(RetentionPolicy.RUNTIME) @interface TestMapping { } public class Test { public void testMethod(String noAnnotation, @TestMapping String withAnnotation) { } public static void main(String[] args) throws Exception { Method method = Test.class.getDeclaredMethod (“testMethod”, … Read more
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));