Recent questions tagged Java

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java - get indexes of n smallest elements in an array

I have an int array int[] myArray = new int[100]; and want to get indexes of smallest 10 (any n) elements. How can I do 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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java - "javax.crypto.BadPaddingException: Data must start with zero" exception

I encountered the abovementioned exception while I was decrypting a string. Below is my code: import java.security ... return decryptedText; } } 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 - Hide all extra excel columns with Apache-POI

This is my aim: I am generating an xlsx file using Apache POI. I would like to hide all the unused columns ... all the columns in Apache POI? 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 common way to download all types of files in jsp?

I want to download office files,pdf files,image files,zip files,dll files,exe files based on the user selection.So ... types of files in jsp? 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 - Celleditor (JComboBox) in a specific row of a JTable

I don't know how to do to set a jcombobox in a specific row...for now I've this jcombobox for all ... ().getColumn(3).setCellRenderer(renderer); 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 join one audio and video file -- Xuggler

I want to combine a video file (flv) with no audio with an audio file (mp3) using Xuggler. At the moment I ... I am using red5 server. Thanks. 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 can I implement this UI in Android

I want to create an UI as shown in the figure, not exactly, though, but similar. How can I implement 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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java - exception while Read very large file > 300 MB

My task is to open a large file in READ&WRITE mode and i need to search some portion of text in that file ... these things. 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 Run-length encoding

I have no idea how to start my assignment. We got to make a Run-length encoding program, for example, the ... help me get started with 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 do I use SQLite in android?

I've founde already a few answers to this topic (for example this), but it is not working. I only get the ... , Context.MODE_PRIVATE, null); } } See Question&Answers more detail:os...

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

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294 views

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java - 8-Puzzle Solution executes infinitely

I am looking for a solution to 8-puzzle problem using the A* Algorithm. I found this project on the internet. Please ... from their goal positions // for each item find its g...

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

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java - How can I call native functions in Phonegap through Javascript?

I am developing an application for Android using PhoneGap. I have implemented some of the functions in Java ... Java functions using Javascript? 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 - How to suspend thread using thread's id?

Code which I am trying public void killJob(String thread_id)throws RemoteException{ Thread t1 = new Thread(a); t1. ... able to stop this thread. See Question&Answers more detail:os...

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

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285 views

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java - How to make SWT/JFace dialogs which show similar behaviour(layouts) under all window resolutions

The JFace Dialogs I have created show difference in layouts under different resolutions.How to create dialog in ... screenshot of my dialog. 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 - A good approach to do multipart file upload in Android

I am working on a piece of code to do multipart form data POST request, which in my case is just to upload ... if any one has better approach. See Question&Answers more detail:os...

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

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247 views

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java - How can I get screenshot of specified element using WebDriver in C#

I have my little project written on Java and I need to rewrite it in C#. It's almost done, but I am stuck on ... way to achieve the same in C#? See Question&Answers more detail:os...

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

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363 views

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java - Pass values entered in one JFrame's text field as an input parameter in other JFrame

How to pass values entered in one JFrame's text field as an input parameter in other JFrame? Entered user ... to other on button click See Question&Answers more detail:os...

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

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198 views

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java - How to Save The Image From Canvas code in Android Application?

I have created a image in OnDraw(Canvas),i tried to Save that Image But its Not Working.image is Saved ... catch block 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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223 views

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java - Difference between intel and AMD multithreading

I have an application meant for data transfer between 2 databases. Most of the operations of this ... to increase application throughput. See Question&Answers more detail:os...

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

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302 views

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java - JDBC Statement/PreparedStatement per connection

I was wondering how many statements or preparedstatements can be opened per connection at the same time. I don' ... would be helpful. Thanks See Question&Answers more detail:os...

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

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423 views

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java - Spring Batch:How to monitor currently running jobs & show progress on jsp page

I want to know how to monitor status of my currently running batch jobs.My jobs are basically processing folder ... more helpful. 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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316 views

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java - sitemesh and spring MVC decorator pattern problems

I have sitemesh with spring working, this is the configuration: decorator.xml <?xml version="1.0" encoding=" ... url-pattern> </servlet-mapping> 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 - Move imageview after animation (update position)

I am trying to to do a translate animation on an image view from the bottom to the middle of the ... }); ivStart.startAnimation(translate); See Question&Answers more detail:os...

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

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268 views

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java - How to save a checkbox state in android app

I have this app with a simple checkbox which adds a line to build.prop when the user presses it , the thing ... ="CheckBox" /> </RelativeLayout> See Question&Answers more detail:os...

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

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363 views

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java - Trying to color specific cell in JTable... getTableCellRendererComponent Overide

So I know this may be a duplicate question, but I've looked through many of the ones already on here ... row. Any suggestions? Thanks! Canaan See Question&Answers more detail:os...

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

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652 views

1 answer

java - How to parse a malformed xml (ofx) with ofx4j?

i am desperatly trying to use the following library : ofx4j. But the documentation relative to parsing an ofx ... files. 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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324 views

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java - How to use FileUtils IO correctly?

I tried to use method (credits to Shenyuan Lu ): org.apache.commons.io.FileUtils.copyURLToFile(URL, File) ... to use copyURLToFile again??? See Question&Answers more detail:os...

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

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525 views

1 answer

java - handle session expired event in spring based web application

I am using Spring security feature in my application, but I found out that when the session expired, all the ... doesn't work. Many thanks See Question&Answers more detail:os...

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

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