Java
-
Unknown developer of Java Web start application on OS X
The Java Web start application signed on Mac OS X 10.9 blocks this message by default: "application.jnlp" can't be ope…… -
Java XOR two arrays [closed]
I have to apply one XOR two arrays as if I had the following: array_1: 1 0 1 0 1 1 array_2: 1 0 0 1 0 1 I want a funct…… -
Java webdriver: element invisible exception
I have the following questions I have a hidden drop-down list, so when I make a selection and run the test, I get the …… -
How do I type π (PI) in Java?
Is there a character in the math API that allows the character π to be represented? Solution You don't even need to us…… -
Java – with restlets, xStream annotations don’t seem to have any effect
Using @ xstreamomitfield in my POJO doesn't seem to have any impact Annotated fields are still exposed in XML or JSON …… -
Java – why is “. Concat (string)” much faster than “”?
See the English answer > string concatenation: concat() vs "+" operator11 for(int i = 0; i < 100000000L; i++) { …… -
Java – what dependencies are required for the embedded ActiveMQ proxy?
I am trying to use the embedded ActiveMQ agent for unit testing as follows: http://activemq.apache.org/how-to-unit-tes…… -
Java – values cannot be placed in MDC
I tried to record several values in onbeginrequest () of requestcycle () in the ticket Here are the codes: getRequestC…… -
Java – why does the scheduleatfixedrate – schedulewithfixeddelay method not use callable
I'm doing some experiments on Java 8 concurrency In the scheduledthreadpoolexecutor API I can see the following two si…… -
Java – set vs list vs array as return type of EJB method
I was recently told that collection should take precedence over list as the return value of EJB methods The argument i…… -
Java – JUnit Derby spring: the in memory database is discarded after each test
In my unit test, I automatically installed some data sources using URLs jdbc:derby:memory:mydb;create=true Create dB i…… -
Java – explains the behavior of automatically incrementing a composite ID sequence using hibernate mapping
I have a table CREATE TABLE `SomeEntity` ( `id` int(11) NOT NULL AUTO_INCREMENT,`subid` int(11) NOT NULL DEFAULT …… -
Is there OLE automation in Java?
Can OLE automation be used in Java? If not, why is it impossible in Java? I want to automatically export Excel spreads…… -
Array – call the constructor with array parameters from PowerShell
I am a beginner and know c# moderation Recently, I was writing this power shell script and wanted to create a HashSet …… -
What kind of Java syntax is “= = null? False: true;”
I'm looking at the code and wondering what this means: Boolean foo = request.getParameter("foo") == null? false:true; …… -
Java: how to check whether a lock can be acquired?
If I want to ensure exclusive access to objects in Java, I can write this: ... Zoo zoo = findZoo(); synchronized(zoo) …… -
Java – stores the contents of a text file line by line into an array
All, the problem I'm facing now is that I don't know how to store the contents of the text file in the array Is it pos…… -
Java generics and number classes
I want to create a method to compare a number, but can have an input of any subclass of a number I see this in the fol…… -
Haskell – parallel strategy using Monad
I often see the use and interpretation of Haskell's parallel strategy related to pure computing (such as FIB) However,…… -
Are the default values of Java annotations compiled into bytecode?
I tried to implement several static analyses for Java bytecode They try to calculate whether a method has specific pro…… -
Java – learn about spring boot
I try to understand the difference between spring boot and spring boot web Starting from this boot tutorial, POM inclu…… -
What are the Java system classes?
When I read some documents about assertions, I found that: java -ea -dsa Which is the system class? Solution According…… -
Java Generics Pass . Class reference
I need to call a super constructor that requires me to pass a generic type Class reference How can I achieve this in J…… -
java. lang.NoSuchMethodError：org. springframework. http. MediaType. getCharset()Ljava / nio / charset / Charset
When I tried to run my TestNG test through ant, I got Java lang.NoSuchMethodError：org. springframework. http. MediaTy…… -
Java – how to identify anonymous inner classes in notserializableexception
Trying to debug the application in NetBeans received the following error message: During debugging, I have to insert "…… -
Version control – advantages and disadvantages of version control Javadoc
I'd like to know whether to submit Javadoc files to my project's SVN repository I've read about SVN good practices, in…… -
Java stream – collection combiner
Why the following codes: StringBuilder sb22 = IntStream .range(1,101) .filter(x -> x > 50) .@R_91…… -
Java – syntax error on the expected token variabledeclaratorid after this token
In the next line, I get "syntax error of the expected token variable declaration after this token" listAq = new AQuery…… -
Java – symbol class onclicklistener not found
I'm a novice in Android development This is my problem Anyone can help me with this. I've been looking for a solution …… -
Java – will The war file deployed to Tomcat 8 works normally in the IDE, but when I deploy to my VPS, I lose all JS and CSS
I have a spring boot application When I started running Tomcat 8.0 in my IntelliJ IDE_ I have no problem. It looks gre…… -
Java – extends multiple classes
I know that Java does not support multiple inheritance because it does not allow multiple classes to be extended I jus…… -
Java – parsing of external (third-party) beans
I know it's still not very popular because the specification was released a few months ago I haven't "installed" weldi……