Java – LocalTransportSender not found when using web services
I am not a big fan of web services, but sometimes you have to conform with a client interface. I have successfully generated code from the the provided WSDLs, but when I try and run the application which actually uses the generated classes, I get the following:
java.lang.ClassNotFoundException: org.apache.axis2.transport.local.LocalTransportSender I am keeping the generated code in a separate project and have the following dependencies in my pom:
org.apache.axis2 axis2-adb 1.6.1 compile org.apache.axis2 axis2-kernel 1.6.1 compile As stated, the jar gets generated without any issues, but when it is includes in the application that makes use of it, I get the said exception.
Best Solution
Adding below dependency would probably should solve this problem.
org.apache.axis2 axis2-transport-local 1.6.2 Related Solutions
Java – When to use LinkedList over ArrayList in Java
Summary ArrayList with ArrayDeque are preferable in many more use-cases than LinkedList . If you’re not sure — just start with ArrayList .
TLDR, in ArrayList accessing an element takes constant time [O(1)] and adding an element takes O(n) time [worst case]. In LinkedList adding an element takes O(n) time and accessing also takes O(n) time but LinkedList uses more memory than ArrayList.
LinkedList and ArrayList are two different implementations of the List interface. LinkedList implements it with a doubly-linked list. ArrayList implements it with a dynamically re-sizing array.
As with standard linked list and array operations, the various methods will have different algorithmic runtimes.
- get(int index) is O(n) (with n/4 steps on average), but O(1) when index = 0 or index = list.size() — 1 (in this case, you can also use getFirst() and getLast() ). One of the main benefits of LinkedList
- add(int index, E element) is O(n) (with n/4 steps on average), but O(1) when index = 0 or index = list.size() — 1 (in this case, you can also use addFirst() and addLast() / add() ). One of the main benefits of LinkedList
- remove(int index) is O(n) (with n/4 steps on average), but O(1) when index = 0 or index = list.size() — 1 (in this case, you can also use removeFirst() and removeLast() ). One of the main benefits of LinkedList
- Iterator.remove() is O(1). One of the main benefits of LinkedList
- ListIterator.add(E element) is O(1). One of the main benefits of LinkedList
Note: Many of the operations need n/4 steps on average, constant number of steps in the best case (e.g. index = 0), and n/2 steps in worst case (middle of list)
- get(int index) is O(1). Main benefit of ArrayList
- add(E element) is O(1) amortized, but O(n) worst-case since the array must be resized and copied
- add(int index, E element) is O(n) (with n/2 steps on average)
- remove(int index) is O(n) (with n/2 steps on average)
- Iterator.remove() is O(n) (with n/2 steps on average)
- ListIterator.add(E element) is O(n) (with n/2 steps on average)
Note: Many of the operations need n/2 steps on average, constant number of steps in the best case (end of list), n steps in the worst case (start of list)
LinkedList allows for constant-time insertions or removals using iterators, but only sequential access of elements. In other words, you can walk the list forwards or backwards, but finding a position in the list takes time proportional to the size of the list. Javadoc says «operations that index into the list will traverse the list from the beginning or the end, whichever is closer», so those methods are O(n) (n/4 steps) on average, though O(1) for index = 0 .
ArrayList , on the other hand, allow fast random read access, so you can grab any element in constant time. But adding or removing from anywhere but the end requires shifting all the latter elements over, either to make an opening or fill the gap. Also, if you add more elements than the capacity of the underlying array, a new array (1.5 times the size) is allocated, and the old array is copied to the new one, so adding to an ArrayList is O(n) in the worst case but constant on average.
So depending on the operations you intend to do, you should choose the implementations accordingly. Iterating over either kind of List is practically equally cheap. (Iterating over an ArrayList is technically faster, but unless you’re doing something really performance-sensitive, you shouldn’t worry about this — they’re both constants.)
The main benefits of using a LinkedList arise when you re-use existing iterators to insert and remove elements. These operations can then be done in O(1) by changing the list locally only. In an array list, the remainder of the array needs to be moved (i.e. copied). On the other side, seeking in a LinkedList means following the links in O(n) (n/2 steps) for worst case, whereas in an ArrayList the desired position can be computed mathematically and accessed in O(1).
Another benefit of using a LinkedList arises when you add or remove from the head of the list, since those operations are O(1), while they are O(n) for ArrayList . Note that ArrayDeque may be a good alternative to LinkedList for adding and removing from the head, but it is not a List .
Also, if you have large lists, keep in mind that memory usage is also different. Each element of a LinkedList has more overhead since pointers to the next and previous elements are also stored. ArrayLists don’t have this overhead. However, ArrayLists take up as much memory as is allocated for the capacity, regardless of whether elements have actually been added.
The default initial capacity of an ArrayList is pretty small (10 from Java 1.4 — 1.8). But since the underlying implementation is an array, the array must be resized if you add a lot of elements. To avoid the high cost of resizing when you know you’re going to add a lot of elements, construct the ArrayList with a higher initial capacity.
If the data structures perspective is used to understand the two structures, a LinkedList is basically a sequential data structure which contains a head Node. The Node is a wrapper for two components : a value of type T [accepted through generics] and another reference to the Node linked to it. So, we can assert it is a recursive data structure (a Node contains another Node which has another Node and so on. ). Addition of elements takes linear time in LinkedList as stated above.
An ArrayList, is a growable array. It is just like a regular array. Under the hood, when an element is added at index i, it creates another array with a size which is 1 greater than previous size (So in general, when n elements are to be added to an ArrayList, a new array of size previous size plus n is created). The elements are then copied from previous array to new one and the elements that are to be added are also placed at the specified indices.
Java – How to create an executable JAR with dependencies using Maven
maven-assembly-plugin fully.qualified.MainClass jar-with-dependencies mvn clean compile assembly:single Compile goal should be added before assembly:single or otherwise the code on your own project is not included.
See more details in comments.
Commonly this goal is tied to a build phase to execute automatically. This ensures the JAR is built when executing mvn install or performing a deployment/release.
maven-assembly-plugin fully.qualified.MainClass jar-with-dependencies make-assembly package single Related Question
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Session transports not found in uber-jar #194
Session transports not found in uber-jar #194
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Exception in thread "main" java.lang.ExceptionInInitializerError at org.freedesktop.dbus.connections.impl.DBusConnectionBuilder.validateTransportAddress(DBusConnectionBuilder.java:129) at org.freedesktop.dbus.connections.impl.DBusConnectionBuilder.forSessionBus(DBusConnectionBuilder.java:43) at org.freedesktop.dbus.connections.impl.DBusConnectionBuilder.forSessionBus(DBusConnectionBuilder.java:65) at dim.plantuml.PlantUmlHelper.sendViaDbus(PlantUmlHelper.java:100) at dim.plantuml.PlantUmlHelper.main(PlantUmlHelper.java:141) Caused by: org.freedesktop.dbus.exceptions.TransportRegistrationException: No dbus-java-transport found in classpath, please add a transport module at org.freedesktop.dbus.connections.transports.TransportBuilder.getTransportProvider(TransportBuilder.java:63) at org.freedesktop.dbus.connections.transports.TransportBuilder.(TransportBuilder.java:35) . 5 more I would expect the unix transport to be found and used because my environment has:
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus unzip -l plantuml-helper.jar | grep transport 0 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/ 7690 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/AbstractTransport.class 644 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/AbstractUnixTransport.class 374 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/IFileBasedBusAddress.class 1760 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/TransportBuilder$SaslAuthMode.class 12902 2022-09-08 14:50 org/freedesktop/dbus/connections/transports/TransportBuilder.class 0 2022-09-08 14:50 org/freedesktop/dbus/spi/transport/ 1352 2022-09-08 14:50 org/freedesktop/dbus/spi/transport/ITransportProvider.class 0 2022-10-31 22:47 org/freedesktop/dbus/transport/ 0 2022-09-08 14:51 org/freedesktop/dbus/transport/jre/ 1775 2022-09-08 14:51 org/freedesktop/dbus/transport/jre/NativeTransportProvider.class 1170 2022-09-08 14:51 org/freedesktop/dbus/transport/jre/NativeUnixSocketHelper.class 3251 2022-09-08 14:51 org/freedesktop/dbus/transport/jre/NativeUnixSocketTransport.class 1702 2022-09-08 14:51 org/freedesktop/dbus/transport/jre/UnixBusAddress.class 0 2022-09-08 14:50 org/freedesktop/dbus/transport/tcp/ 1331 2022-09-08 14:50 org/freedesktop/dbus/transport/tcp/TcpBusAddress.class 3102 2022-09-08 14:50 org/freedesktop/dbus/transport/tcp/TcpTransport.class 3418 2022-09-08 14:50 org/freedesktop/dbus/transport/tcp/TcpTransportProvider.class java -version openjdk version "17.0.4" 2022-07-19 OpenJDK Runtime Environment (build 17.0.4+8-Debian-1) OpenJDK 64-Bit Server VM (build 17.0.4+8-Debian-1, mixed mode, sharing) The text was updated successfully, but these errors were encountered: