Recent questions tagged JAVA

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java - Animate Change of color of nodes in insertion of binary search tree

I already have implemented display of binary search tree . Here's the code , which paints the binary tree in a ... , with timer or likewise . See Question&Answers more detail:os...

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

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java - Windows 10 CLI UTF-8 encoding

Problem: On an english Windows 10 using slovenian keyboard layout, all command line interfaces seem to have a problem ... to appear with java. See Question&Answers more detail:os...

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

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java - Reading block from mifare classic using javax.smartcardio

I would like to read a specific block on Mifare classic using Java's javax.smartcardio. Here's my code: public ... lot. (Sorry for my english) See Question&Answers more detail:os...

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

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java - PDFBox - opening and saving a signed pdf invalidates my signature

I am trying to learn to use Apache's pdfBox to deal with digitaly signed documents for work. During ... streams than the annotation itself? See Question&Answers more detail:os...

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

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java - Spring MVC response encoding issue

In last few hours I've read a lot concerning this topic, and so far nothing has worked. I'm trying to return ... UTF-8, maybe I'm wrong. See Question&Answers more detail:os...

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

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java - Location returned is null when provider is gps?

I am trying to retrieve the my current location coordinates in the following piece of code LocationManager locationManager ... it be rectified? See Question&Answers more detail:os...

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

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java - jndi LDAPS custom HostnameVerifier and TrustManager

We are writing an application that shall connect to different LDAP servers. For each server we may only accept ... to pass information to that? See Question&Answers more detail:os...

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

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java - How to only get child keys in Firebase

I want to display only children of location i.e Sindh and Punjab (not their children). Is it possible, and if so how can I do it? See Question&Answers more detail:os...

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

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java - How to handle multiple actions in a single form in Struts 2

I have a form contains three buttons print/export/save. <s:form action="/userAction"> <s:submit type="image" ... I map this in struts.xml? See Question&Answers more detail:os...

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

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java - Android, add new view without XML Layout

I need a little help from people with expirience. I hope it's easy. I just want to show new View (creating ... I tried in other locations too. See Question&Answers more detail:os...

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

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369 views

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java - JsonMappingException: No suitable constructor found

I am implementing a firebase example as given in their documentations. I am facing this error: com.fasterxml ... regrading this is appreciated. See Question&Answers more detail:os...

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

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255 views

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java - Adding shapes to JPanel on a button click

I have a Class Circle with a button and a Class with a jPanel what i want to do is when that button is clicked ... arg0) { repaint(); } } See Question&Answers more detail:os...

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

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95 views

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java - Spring does not ignore file extension

In my Spring XML I have the following snippet: <bean class="org.springframework.web.servlet.mvc.annotation. ... this has resolved my issue See Question&Answers more detail:os...

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

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492 views

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java - Split image into clickable regions

Is there any way to split an image to region (right now it's JLabel but I can change it if necessary) ... were clicked. Seems possible anyone? See Question&Answers more detail:os...

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

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278 views

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java - How to read whitespace with scanner.next()

I have a scanner, and have set the delimiter to "", but it still won't read whitespaces with the next() ... an easier way to go about this? See Question&Answers more detail:os...

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

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345 views

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java - JavaFX extract calendar-popup from DatePicker / only show popup

I'm trying to build an CalendarView for an JavaFX application, to only display dates(no selecting required). Since the ... to be not that easy. See Question&Answers more detail:os...

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

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399 views

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java - JSON nest class data binding

{ "type":"cat", "animal":{"name":"cat"} } Animal is an abstract class. Cat and Dog are subclass. Now I am ... code will works. but it isn`t ): See Question&Answers more detail:os...

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

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131 views

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java - File resolver in Jasper Reports 5.0.1

with 5.0.1 the REPORT_FILE_RESOLVER was deprecated and the sample implementations: http://jasperreports.sourceforge.net/ ... have to be done? See Question&Answers more detail:os...

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

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251 views

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java - GWT-Platform login + session management

I am new to gwt and I am creating a login page using gwt and I need help with session managment. All ... the browser's session. Thank you. See Question&Answers more detail:os...

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

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110 views

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java - How to embed jar in HTML

There are a lot of resources on this already but I just can't seem to get it to work. What am I doing ... cannot be cast to java.applet.Applet See Question&Answers more detail:os...

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

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435 views

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java 8 - Maven + AspectJ weaving for Java8

I Cannot mvn package with the minimal sample below. Eclipse (Mars.2 Release 4.5.2) compiles and weaves without ... plugins> </build> </project> See Question&Answers more detail:os...

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

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295 views

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java - JavaFX Use Chart Legend to toggle show/hide Series possible?

Is it possible to use a chart's legend to toggle show/hide a series? I got a LineChart with a legend and ... I can't come up with anything. See Question&Answers more detail:os...

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

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235 views

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java - Scalar Multiplication of Point over elliptic Curve

I am implementing Elliptic Curve Point arithmetic operation on NIST specified curve "p192". For testing purpose I have ... is correct"); } } See Question&Answers more detail:os...

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

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244 views

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java - Most efficient initial capacity size for StringBuilder?

I'm writing lots of stuff to log in bursts, and optimizing the data path. I build the log text with ... can share a knowledge-based answer. See Question&Answers more detail:os...

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

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350 views

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java - Two identical Strings are not equal(Not pointer/reference mistake)

I read a line from a file: KatalogObrazków 1 32 Means that I should look for data in: C:UsersNAME_OF_THE_USER/ ... 114 97 122 107 243 119 See Question&Answers more detail:os...

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

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157 views

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java - UTF-8 encoding and http parameters

I am doing a simple ajax call with the YahooUI Javascript library as follows: YAHOO.util.Connect.setForm('myform') ... to be decoding this?. See Question&Answers more detail:os...

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

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238 views

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java - UTF-8 works on Eclipse but fails to work with an exported jar

I am working on a desktop application with Java Swing and save data on a MySQL database in arabic language with ... ; abd every thins is uts8 See Question&Answers more detail:os...

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

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258 views

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java - Spring RestTemplate Send List an get List

I want to make a service with Spring's RestTemplate, in my service side the code is like this : @PostMapping(path= ... , what's the correct way? See Question&Answers more detail:os...

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

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