Recent questions tagged Java

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I've read many posts on this site on how to receive UDP packets in Android. However, none of this is working ... from using either of the ports. 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 - BadPaddingException: pad block corrupted

I am trying to decrypt a file in Java which was encrypted in C# using Rijndael/CBC/PKCS7. I keep getting the ... { 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 - How to pass a text file as a argument?

Im trying to write a program to read a text file through args but when i run it, it always says the file ... better way of reading a text file? 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 - Where does the JIT compiled code reside?

So I have this method, written in Java: public void myMethod(int y){ int x = 5 + y; doSomething(x); ... jit compiled code instead of byte code? 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 - Resize dialog message (JOptionPane) for long sentence with fixed width

I'm trying to resize the height of the dialog box (JOptionPane) for long sentence with hyperlink. My code is ... the height of the 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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466 views

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java - Jackson - serialize/deserialize property as JSON value

Using Jackson 2, I'm looking for a generic way to be serialize objects as a single value (then serialize ... be greatly appreciated. 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 to get list of Interfaces from @ComponentScan packages

I would like to implement something similar to Spring Data. Developer can define some interfaces, add a ... properly from ApplicationContext. 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 raw text from JTextPane

In my application, I use a JTextPane to display some log information. As I want to hightlight some specific lines ... into raw text by myself? 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 - verifying detached signature with BC

How can I verify a detached signature (CMS/pkcs #7 signature) using the BouncyCastle provider in Java? Currently, ... verify(certificate, "BC"); 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 - Transactions don't rollback

I am call two methods, the first one update a table and the next one insert a record in another ... connection) throws CustomException; } See Question&Answers more detail:os...

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

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416 views

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java - javap and generics' type erasure

I am reading Herbert Schilds about type erasure in generics in java. Supposedly running javap on a class ... with the generic information. 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 show "Loading" status in Android?

I'm making an Android application and it has to load some data though Internet (only some data-- not all). ... the icon? 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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731 views

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java - Javafx resize components when fullscreen

Original size screenshot Fullscreen screenshot When i resize how can i nicely arrange the components. im using FXML ... /children> </AnchorPane> See Question&Answers more detail:os...

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

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347 views

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java - Jtable with different types of cells depending on data type

How can I implement a JTable with different types of cell editors depending on the type of input a particular ... created at run-time. See Question&Answers more detail:os...

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

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463 views

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java - How to wait for a transition to end in javafx 2.1?

My scene consists only of an ImageView, displaying an image. I would like to fade the image to black ( ... waiting done properly? 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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253 views

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java - Spring list beans by type

Is there a way in Spring that I can auto populate a list with all of beans of a type AND any of its ... all subclasses of MyType. Thanks, Jeff See Question&Answers more detail:os...

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

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186 views

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java - How to write tag in my spring project?

I want to write my tag (extends TagSupport) in my spring framework. In my tag class, will use some service ... can I resolve this? 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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311 views

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java - Why bother with setting the "sun.awt.exception.handler" property?

Here's some code that catches an exception thrown on the Event Dispatch Thread: package com.ndh.swingjunk; ... .handler no longer necessary? See Question&Answers more detail:os...

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

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664 views

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java - Converting 32-bit unsigned integer (big endian) to long and back

I have a byte[4] which contains a 32-bit unsigned integer (in big endian order) and I need to convert it ... bit unsigned integer to byte[4])? See Question&Answers more detail:os...

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

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297 views

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java - which is faster? Statement or PreparedStatement

Often, in the network can be found code like this: private static final String SQL = "SELECT * FROM ... PreparedStatement. Or I'm mistaken? See Question&Answers more detail:os...

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

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314 views

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java - How to map a set of enum type in Hibernate?

In hibernate, is it possible to define a mapping for a class to a set of enums? I've been able to find examples of ... -----------+ Thanks 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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294 views

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java - Could not find or load main class when trying to format namenode; hadoop installation on MAC OS X 10.9.2

I'm trying to get a development single-node cluster setup done on my MAC OS X 10.9.2 with hadoop. I' ... .namenode.NameNode ? 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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649 views

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java - calling invokeAndWait from the EDT

I have a problem following from my previous problem. I also have the code SwingUtillities.invokeAndWait somewhere ... [DestroyJavaVM] (Running) 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 - JavaFX Input Validation Textfield

I'm using JavaFX and Scene Builder and I have a form with textfields. Three of these textfields are parsed ... 't find a satisfying solution. See Question&Answers more detail:os...

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

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189 views

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java - Package does not exist when using separate App as a dependency

I'm trying to compile an App utilising a separate App as a dependency but when I compile referencing modules from ... up correctly... 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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294 views

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java - Supporting multiple content types in a Spring-MVC controller

A Rails controller makes it very easy to support multiple content types. respond_to do |format| format.js { render : ... xml, xhtml, and JSON. See Question&Answers more detail:os...

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

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338 views

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java - How to revert the database back to the initial state using dbUnit?

I am new to automated testing and dbUnit. So I would appreciate your advice. I am going to create a test ... more than one database connection. See Question&Answers more detail:os...

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

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304 views

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java - Hadoop : Provide directory as input to MapReduce job

I'm using Cloudera Hadoop. I'm able to run simple mapreduce program where I provide a file as input to ... jar ABC.jar /folder1 /output See Question&Answers more detail:os...

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

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