Recent questions tagged Java

0 votes

402 views

1 answer

java - DataInputStream.read() vs DataInputStream.readFully()

Im making a simple TCP/IP Socket app Whats the different between doing this: DataInputStream in = new DataInputStream( ... its the same thing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

411 views

1 answer

java - Getting 'Attempt to mutate notification' exception

My goal is to implement blue coloring of keywords written by user into JTextPane. This is how my ... something other than DocumentListener? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

243 views

1 answer

java - HttpClient NoClassDefFoundError

I am trying to run a sample application from HttpClient 4.0.1. It is the file ClientMultiThreadedExecution.java ... in advance for your help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

514 views

1 answer

java - Android: unable to start service intent: not found?

I know, I am not the first onbe with this problem, but I tried so many solutions, I have found ... course without this comment </application> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

378 views

1 answer

java - How to access model attribute in Javascript

I want to access a model attribute in Javascript. I use the following code: model.addAttribute("data", ... alert is displayed Error : See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

446 views

1 answer

java - Extending ByteBuffer class

Is there any way to create class that extends ByteBuffer class? Some abstract methods from ByteBuffer are package ... about 4 times faster. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

384 views

1 answer

java - Should we always override equals?

When writing one's own classes, is it always necessary to override equals(Object o)? If I don't, will it ... variables point to the same object? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

376 views

1 answer

java - FileFilter for JFileChooser

I want to restrict a JFileChooser to select only mp3 files. But, the following code allows all file types ... = fileChooser.getSelectedFile(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

430 views

1 answer

java - Why does DecimalFormat allow characters as suffix?

I'm using DecimalFormat to parse / validate user input. Unfortunately it allows characters as a suffix while parsing. ... input like "12abc"? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

228 views

1 answer

java - Mockito object is not an instance of declaring class

I haven't touched Mockito for a while, and I have never used it extensively. But today in some new code ... mock(ResourceI18nConcern.class); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

396 views

1 answer

java - Difference between StandardTokenizerFactory and KeywordTokenizerFactory in Solr?

I am new to Solr.I want to know when to use StandardTokenizerFactory and KeywordTokenizerFactory? ... and KeywordTokenizerFactory? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

java - IllegalStateException within method with Response paramether

I wrote a simple class to test response reading entity method (if it works as I expect). But it didn't worked ... ; } What am I doing wrong? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

345 views

1 answer

java - Transactional annotation error

When I put "@Transactional(readOnly=false)" annotation in my Service class I get the following error Description: The ... What is causing this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

java - Setting up M2_REPO classpath

I have a few questions corresponding to this. What is M2_REPO? What does this command do? mvn -Declipse.workspace=< ... we need to do the above? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

365 views

1 answer

java - Get month number from month name

I have this. BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String monthName = br. ... monthName variable? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

374 views

1 answer

java - Iterate through multiple collections in the same "for" loop?

I wonder if there's such a way to iterate thru multiple collections with the extended for each loop in java. So ... // do something ... Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

242 views

1 answer

java - Initializing array with values - should I explicitly instance the class or not?

I often see arrays being initialized like this: String[] array = new String[] { "foo", "bar", "baz" }; ... find anything about this in the web. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

237 views

1 answer

java - Error in velocity and log4J

I built a webapp that works perfectly fine in my localhost (tomcat). But when I tried to deploy, velocity ... .core.StandardService.start(StandardService.java:448) at org.apache.ca...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

352 views

1 answer

java - How do I map different values for a parameter in the same @RequestMapping in Spring MVC?

Suppose I have: @RequestMapping(params = "action=nuovoprodotto") public ModelAndView nuovoProdotto( @RequestParam(value ... value combination? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

413 views

1 answer

java - how we can get JPA EntityManager Flush work

my question is why flush doesn't work : public void ejbService(){ Customer c = em.find(Customer.class,1); c. ... .None); but still not work RGDS See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

273 views

1 answer

java - How to access the private variables of a class in its subclass?

This is a question I was asked in an interview: I have class A with private members and Class B extends A. I ... with the same value in class B. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

380 views

1 answer

java - Android WebView Playing HTML5/h.264/mp4 Video, How to get at the MediaPlayer

I have an Activity which is a WebView. I have a WebChromeClient inside it. Inside that, there are several ... be helping. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

499 views

1 answer

java - Jersey/Jackson: how to catch json mapping exception?

I would like to catch json mapping exception in my restful service in case input json is not valid. It throws ... want to catch this exception. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

441 views

1 answer

java - error with serialization with protobuf

I'm trying to serialize a structure with protobuf. after many hours trying to figure out what I'm doing ... overridden by subclasses." Thanks; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

586 views

1 answer

java - How to enable query logging in Spring-data-elasticsearch

I use spring-data-elasticsearch framework to get query result from elasticsearch server, the java code like this: ... 't log the query. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

459 views

1 answer

java - Button ClickListener is not working in LibGDX game

I am developing an Android game using LibGDX. There are 4 buttons in a menu screen, but the ClickListener of these ... of a button in LibGDX? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

464 views

1 answer

java - Determine Number of Decimal Place using BigDecimal

I was interested to have the following getNumberOfDecimalPlace function: System.out.println("0 = " + Utils. ... "1" as result. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

554 views

1 answer

java - Does the finally block execute if the thread running the function is interrupted?

If I have a function with a try/finally section, and the thread running it is interrupted while in ... before the interruption actually occurs? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags