Recent questions tagged java

0 votes

255 views

1 answer

java - How to sort String array by length using Arrays.sort()

I am trying to sort an array of strings according to their length using Arrays.sort(), but this sorts the strings ... JDK 1.7 & JDK1.8. See Question&Answers more detail:os...

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

0 votes

251 views

1 answer

java - What does wildcard address in InetSocketAddress mean?

In the docs for the constructor InetSocketAddress(int port) it says: Creates a socket address where the IP address is ... used in socket.bind()? See Question&Answers more detail:os...

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

0 votes

333 views

1 answer

java - compile error: cannot find symbol: In, StdIn and StdOut

The code is from http://algs4.cs.princeton.edu/11model/BinarySearch.java.html for Algorithms textbook. import java.util. ... (key); ^ 4 errors See Question&Answers more detail:os...

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

0 votes

200 views

1 answer

java - apache commons configuration loads property until "," character

I want to load configuration (apache commons configuration) from a properties file. My program is: ... character. Any ideas? See Question&Answers more detail:os...

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

0 votes

354 views

1 answer

java - Android - Send Telegram message to a specific number

I'm trying to send a Telegram message to a specific number from within my Android app. Right now my code launches ... .LENGTH_SHORT).show(); } } See Question&Answers more detail:os...

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

0 votes

474 views

1 answer

java - "Warning: Do not place Android context classes in static fields; this is a memory leak (and also breaks Instant Run)"

Similar question have been asked here, here and here but the context is quite different from this and moreover the ... knows how to fix this? See Question&Answers more detail:os...

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

0 votes

288 views

1 answer

java - How to persist a lot of entities (JPA)

I need to process a CSV file and for each record (line) persist an entity. Right now, I do it this way: ... shouldn't have to worry about this. See Question&Answers more detail:os...

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

0 votes

379 views

1 answer

java - How to remove bad characters that are not suitable for utf8 encoding in MySQL?

I have dirty data. Sometimes it contains characters like this. I use this data to make queries like WHERE a.address ... ? I use Java. Thanks. See Question&Answers more detail:os...

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

0 votes

1.1k views

1 answer

java - Spring Reactor: Mono.zip fails on empty Mono

I am using Spring Reactor 3.1.0.M3 and have a use case where I need to merge Mono's from multiple sources ... object instead of having to cast? See Question&Answers more detail:os...

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

0 votes

217 views

1 answer

java - How to return actual html file using JAX-RS

so far, I'm returning html my home page by: @GET @Produces({MediaType.TEXT_HTML}) public String viewHome() { return ... do I do this? thanks :) See Question&Answers more detail:os...

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

0 votes

262 views

1 answer

java - Using Spring Security, how can I use HTTP methods (e.g. GET, PUT, POST) to distingush security for particular URL patterns?

The Spring Security reference states: You can use multiple elements to define different access requirements for different ... the URL pattern? See Question&Answers more detail:os...

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

0 votes

204 views

1 answer

java - Reading JSON Content

I'm using jsoup to scrape some HTML data and it's working out great. Now I need to pull some JSON ... not parsing properly with Gson. Thanks! See Question&Answers more detail:os...

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

0 votes

227 views

1 answer

java - Spring MVC, forward

Is there any difference between public class Controller1 extends AbstractController { @Override protected ModelAndView ... } } See Question&Answers more detail:os...

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

0 votes

261 views

1 answer

java - Are all final variables captured by anonymous classes?

I thought I knew the answer to this, but I can't find any confirmation after an hour or so of searching. In ... t able to find the answer there. See Question&Answers more detail:os...

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

0 votes

302 views

1 answer

java - Do I need to close files I perform File.getName() on?

I'll be having lot of files in a directory. I'll be just getting the file names using File.getName() and ... operation in it. Is this correct? See Question&Answers more detail:os...

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

0 votes

191 views

1 answer

java - GET HTTP request payload

I am designing an API and I wonder if it is fine to send a JSON payload on a GET request? In this ... you? Based on the above considerations. 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 - Maven - how to add all required dependencies for hibernate?

I have downloaded the zip from the Hibernate website and we have a folder which contains all required jars. ... all required libraries itself? See Question&Answers more detail:os...

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

0 votes

410 views

1 answer

java - final variable case in switch statement

final int a = 1; final int b; b = 2; final int x = 0; switch (x) { case a:break; // ok case b: ... have done final int b = 2, everything works. See Question&Answers more detail:os...

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

0 votes

222 views

1 answer

java - Get date representation in seconds?

I am using an API which requires a date parameter as a number of seconds, an int. My problem is that I ... int parameter which the API requires? See Question&Answers more detail:os...

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

0 votes

182 views

1 answer

java - Is content-encoding being set to UTF-8 invalid?

Hi I have a client that is trying to POST to us with the following http headers: content-type: application/x ... some light into this matter? See Question&Answers more detail:os...

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

0 votes

314 views

1 answer

java - How to transpose List<List>?

I have a following ArrayList, [Title,Data1,Data2,Data3] [A,2,3,4] [B,3,5,7] And I would like to ... Any hint would be much appreciated. Thanks. See Question&Answers more detail:os...

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

0 votes

358 views

1 answer

java - JAXB XMLAdapter method does not throws Exception

I am using JAXB XMLadapter to marshal and unmarshal Boolean values. The application's XML file will be accessed ... to resolve this problem? See Question&Answers more detail:os...

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

0 votes

226 views

1 answer

java - Convert a string to GregorianCalendar

I have a string from an email header, like Date: Mon, 27 Oct 2008 08:33:29 -0700. What I need is ... () to return -7 * milisInAnHour. See Question&Answers more detail:os...

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

0 votes

591 views

1 answer

java - convert vector to jobject in C++/JNI?

I am using Java native function - public native ArrayList<String> parseXML(); In C++ my native function - ... vector type) to jobject type? See Question&Answers more detail:os...

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

0 votes

622 views

1 answer

java - Is there any way to add a MouseListener to a Graphic object?

Is there any way to add a MouseListener to a Graphic object. I have this simple GUI that draw an oval. What ... on the oval. 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

254 views

1 answer

java - How do i find out the JDK version Eclipse is using?

I see JRE all over the place, but i can not be sure which JDK is compiling my code. How do i find out? See Question&Answers more detail:os...

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

0 votes

179 views

1 answer

java - ActionBarSherlock library is full of errors after being imported

Okay, I'm trying to get ActionBarSherlock working, so I imported the library by: Creating New Project > Create ... /menu line 123 Java Problem 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 - Spring Security @AuthenticationPrincipal

I've been trying to get @AuthenticationPrincipal to work properly with a custom User class. Unfortunately, the ... help is greatly appreciated. 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