包含标签：Java 的文章
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Error creating bean with name and singleton bean is not allowed
When I execute code through JUnit test case, I receive the following exception Can anyone suggest possible problems? T…… -
Java – will closing datainputstream also close FileInputStream?
FileInputStream fstream = new FileInputStream(someFile.getPath()); FileInputStream fstream = new FileInputStream(someF…… -
Java – Custom spring annotations for request parameters
I want to write a custom annotation that will modify the spring request or path parameters according to the annotation…… -
Redirect Java – version to a file or variable
This may be a stupid question, but I tried to redirect the exit of the "Java - version" command to a file or variable,…… -
Java – length in array and length () in string
When we talk about arrays and length (), why is the length of data fields when we talk about strings in Java? Means: i…… -
Java – why doesn’t this code cause concurrentmodificationexception?
I'm reading about concurrentmodificationexception and how to avoid it Found an article The code for the first list in …… -
Asynchronous – rxjava adds items after creating observable
I just started using RX Java and I got stuck Maybe I don't use rxjava in the right way, but I need to add it to observ…… -
Java – selenium. In selenium webdriver What is the equivalent of waitforpagetoload (“30000”)?
The following is the Java code waiting for the page to load in selenium RC: selenium.waitForPageToLoad("30000"); What …… -
Java – App Engine blobstore – what can I do to limit the size of files that users can upload?
What can I do to limit the size of files that can be uploaded? I know I can use swfupload to limit its client, but how…… -
Java – what is a better way to keep the adapter as an active internal class or external class?
I want to check for a better and faster way to use the listview program with the adapter Is it out or activity class? …… -
Java adds text to a specific line in a file
I wonder if I can add a line to a file with Java For example, myfile: 1: line 1 2: line 2 3: line 3 4: line 4 I want t…… -
Why is line 17 of this Java program not executed?
As an exercise in my java course at uni this morning, I had to write a small program to ask users to enter some detail…… -
JMeter slave – server failed to start: Java rmi. RemoteException: cannot start Ip-10-142-111-66 is a loopback address
I created a quasi system EC2 Ubuntu server and only used hte to install JMeter to follow sudo apt-get install jmeter T…… -
Java – illegalargumentexception: the name of the executable file has embedded references and split parameters
I received an error: IllegalArgumentException : Executable name has embedded quote,split the arguments Runtime Runtime…… -
Java – JPA many to many connection table entity, compound key “null ID generated”
This is my entity: public class Account extends AbstractEntity<Long> { @Id @SequenceGenerator(name = "a…… -
Java – use the properties in the properties file
I apologize for the title I can't find a better way to explain the situation I use the property class to load property…… -
Java – the same string comparison gives me false
See English answers > How do I compare strings in Java? 23 String temp = ""+(num1*num2); Boolean equal = temp == an…… -
Why do you have to deal with () an out of range Java awt. Window？
One of the memory leaks I found in my application was Java awt. Window. All windows specific static field that tracks …… -
Java – Eclipse: import and export operations in the “save operation” option
You can import export cleanup settings as XML files in preferences - > java - > code style - > clean up I wan…… -
Properties in Java – can we use comma separated keys for individual values?
I want to provide multiple keys (> 1) for a single value in the properties file of my java application A simple way…… -
Java – how do I check if a string is a valid XML element name?
You know the functions in Java, which will verify that a string is a good XML element name Form W3Schools: I found tha…… -
Java – create meta-inf / services folder in eclipse
I tried to create an extensible application in Java and chose to use SPI According to this tutorial, I'm paying attent…… -
Java – how to delete / filter / ignore certain packages from Emma (code coverage)
I tried to delete some packages from my report and got into trouble Can someone help me? I use Emma in my ant process …… -
Java – why not more boring GC
Except Azul, all GCS I know are concurrent, but at least there are some small worldwide components Why isn't there mor…… -
How to call collections on a part of a Java array Shuffle
So I have the following array: String [] randomList = new String [16]; randomList[0]="Dog"; randomList[1]="Dog…… -
Common Lisp – error saving SbCl image from Emacs multi thread
I have been saving and running the Common Lisp image to save restart time and improve development efficiency However, …… -
Java – openjpa in OSGi does not find the MySQL JDBC connector bundle
I am currently working on Felix's OSGi project (v4.0.3) I need to use JPA, so I installed the Apache Aries JPA package…… -
Even if there is enough JAVA memory – why repeat Java garbage collection
Our java process consumes a lot of CPU, and the log shows that it often performs GC, even if the memory used is about …… -
Java – adds an object to the type of the “extended” common collection
public void addAllAnimals(ArrayList<? extends Animal> animalLikeList){ public void addAllAnimals(ArrayList<? …… -
Java – checkstyle, findbugs and PMD configurations do not overlap
In my company, we began to use checkstyle, findbugs and PMD to check our code quality and unify our programming style …… -
Java – conditionally inject beans
I want to inject a bean based on the string parameter passed from the client public interface Report { generateFil…… -
Java converts objects to unimplemented interfaces
I found the following problems in my study book and was a little confused: Given the following code, which option, if ……