Recent questions tagged Java

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java - Google Mobile Vision: Poor FaceDetector performance without CameraSource

Right now, our application is running Snapdragon SDK successfully. We are trying to implement FaceDetector from Vision 8 ... ).build(); } 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 - Select, Copy and Paste Images

What I want my app to do: 1 - Select an area of Image and get the coordinates. This code below should do this ... me to "connect the parts" ? 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 - Is there a "fill" function for arbitrary shapes in javafx?

I need to know in which way I can color the following image (PNG) by using JavaFX. This image is currently ... with a color between borders). 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 performance : Is storing a hashMap value in a variable redundant?

my goal is to reduce memory usage. should I store a hashMap value in a variable if I need to use that ... about the best approach. 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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java - Changing Activation Config of Topic reading MDB at deploy time

I feel this should be easy. Just RTM and go. But I can't find the info I need. Q: Can I change the ... , how do I override the property therein? 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 create a composite primary key hibernate JPA?

i try to create composite primary key in table from 2 foreign key using hibernate JPA,but gives me error.I find some ... .java:48) ... 74 more 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 - Which class hierarchy differences can exist compared to the JSE JavaDoc?

I'm currently generating some ASM code in a maven post compilation task. In Java 6 a StackMapTable was introduced ... ones or not even any? 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 post image to twitter in android

I want to post an image that is created in my app to twitter. I don't know how to do this and I ... there is for Facebook? Thanks in advance 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 create a Piano using JScrollPane and JLayeredPane

I need to create a virtual piano containing four octaves using JLayeredPane inside a JScrollPane such that one octave ... .setVisible(true); } 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 get rank from Google Play game service's leaderboard?

I'm working on a big application and I have to take the player's rank from the Google Play services' leaderboard. ... ... Thanks for your help! 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 - Getting 404 when trying to run HelloWorld REST service

I'm following the example on https://medium.com/@jamsesso/starting-out-with-jersey-apache-tomcat-using- ... Any help greatly 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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java - Garbage collection mock for the OCPJP exam

Four objects are eligible for garbage collection when i3 = null; is executed in the class shown below. I've added ... .println("whinny"); } } 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 prevent Rest web-service Authentication with stolen Token

As we know Rest services are stateless, General strategies to authenticate is using a token based authentication. ... would be 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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405 views

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java - Radiobutton display problems with PDFBox

I used the code from the answer from this question to create my radiobuttons: How to Create a Radio Button Group ... e.printStackTrace(); } } } 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 - Creating json object in javascript and sending it to servlet

i am creating json object to save data and then sending it to the servlet. But when i try to retrieve the object ... and form an xml or string? See Question&Answers more detail:os...

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

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281 views

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java - how can i select and kill multiple application

I'm a newbie in android and my thesis is just like the "Battery Doctor Saver" in android. My number 1 problem is to ... }); return view; } } } See Question&Answers more detail:os...

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

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378 views

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java - No audio in MP4 file - Android

I am using the MP4ParserMergeAudioVideo to add a new audio to an MP4 file. The library had said to use .wav ... Please help. Thanks in advance. 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 - Modifying an Existing PDF without creating an new pdf file

Using iText, I am wanting to open a PDF file, add some more pages with text to it, and then close it. ... it and then overwrite the original? See Question&Answers more detail:os...

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

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586 views

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java - Struts 2 jquery sj:select and json result

I am using struts 2 jquery plugin select component. The action is: SampleAction { private List<SampleVO> ... accept the simple json array See Question&Answers more detail:os...

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

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684 views

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java - svnkit: how to get latest revision number from SVN DB?

I want to get the latest revision number of the SVN database using SVNKIT. I don't want to update the ... revision number. please help me . See Question&Answers more detail:os...

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

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462 views

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java - Why AudioRecord is not recording sound when device fall asleep even when I use WakeLock?

I'm recording the sound from device with AudioRecord and write it to .wav file and I need it to keep recording ... 't know what'fs the problem. 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 - Multithreaded JMS client ActiveMQ

I am using the below code to create multiple JMS sessions for multiple consumers to consume messages. My problem is ... text); return text; } See Question&Answers more detail:os...

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

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398 views

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java - can you have two conditions in an if statement

I'm a beginner in coding. I was recently working with to create a chatting programme where a user will chat ... Can someone correct it for me? See Question&Answers more detail:os...

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

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357 views

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java - NetBeans and Inno Setup don't produce a proper Native .exe

I've created a JavaSE app in Netbeans and am using Inno Setup 5 to generate what I thought was a complete Windows ... , that would be neat. Ed See Question&Answers more detail:os...

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

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348 views

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java - How to dynamically remove a JPanel?

I have a a GUI looks as follow. I want to dynamically add/remove a panel. I use ArrayList to keep trace ... this.isSelected = isSelected; } } See Question&Answers more detail:os...

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

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327 views

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java - How to use fileUpload Interceptor along with other interceptor Stack?

Here is my struts.xml configuration file in which I have a login interceptor. I want to use different file ... name="listalbum" class="com.picvik.action.ViewAlbumAction" method...

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

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456 views

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java - How to choose right nodes in janusgraph

I need to all blue nodes or the node that the id match between different nodes in the tree, based on the ... stop condition, which is the key. See Question&Answers more detail:os...

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

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980 views

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java - Adding Custom colours to Excel sheet using Apache POI

Can anyone explain how to add Custom colours either using (rgb values or hex values ) to an excelsheet sheet( ... a Excelsheet(XSSF Workbook)? See Question&Answers more detail:os...

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

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