Java
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Java – set byte [] to download as a file
I have a jasper report that generates an excel file and outputs it as byte []. I want the file to be displayed as a do…… -
Java – using dialogs in fragments
In my application, I have an activity and several fragments (activity as controller and fragments – as view) In some c…… -
Java – use dto or value object patterns to calculate deferred load exceptions
It's just an architectural problem in the Java / Hibernate / spring / MySQL stack Should I use opensessioninview patte…… -
Java – time zone and formatted date for Grails issues
I hope someone can help solve this very annoying situation. I find myself with Grails & date and time zone as my u…… -
Java – create util class
I created a currency fomatter class I hope it is a util class that can be used by other applications public class Curr…… -
Variable based javax bean validation?
Suppose I have a class with two member variables: import javax.validation.constraints.Min; class Foo { private int…… -
Java – JfreeChart that uses colourmaps to represent 3D data in 2D graphics
I am currently trying to use JfreeChart to represent 3D data in 2D graphics Basically, I have a two-dimensional array …… -
Java – why not throw an exception in objectify’s put() function?
The gae native put() function throws some exceptions when it fails But objectify's put () function never throws any ex…… -
Java – jax-ws error: unable to create SOAP message due to exception: XML reader error: wstxunexpected charexception: unexpected character ‘[‘
It shows the following errors. I don't understand why. Can someone help me? The error is: The function of my call is: …… -
Web form framework in Java
What are the common ways to build web forms in Java and groovy? Spring and Grails provide the corresponding taglib, bu…… -
Java – an XSLT custom function that returns a node set or an XML fragment (not a simple data type)
I'm trying to develop an XSLT custom function that can return node sets or XML fragments. Let's say: Input file: <r…… -
Java save changes
I have an application that mainly includes JList displayed on the screen I hope that whenever I make changes to the ab…… -
Java – transactions in the database do not work in Android
I used the following code, but encountered some problems: mDb.beginTransaction(); String updateQuery ="Query entered h…… -
Haskell – use the O (1) function to write a storable instance of CString to get the total byte length
I'm trying to write an instance of storable vector for CString (in my example, C characters ending in null) The storab…… -
Java – how to render libgdx bitmapfont so that its pixel color is opposite to the background?
either sb.setBlendFunction(GL10.GL_ONE_MINUS_DST_COLOR,GL10.GL_ZERO); sb.begin(); font.setColor(1,1,1); for (LineRect …… -
Java – stateful session beans and persistent entities
Stateful session beans are usually illustrated by implementing shopping carts From outside Java EE, I prefer to use pe…… -
Java – about bufferedimage Instructions for getsubimage (int x, int y, int w, int h) methods?
I'm trying to segment the image. I encountered a small fault. I don't know why it happened This is a quick pseudo code…… -
Java – in the new Use the compiled protobuf classes in the proto file
I imported a library containing classes generated by protobuf I want to send this kind of object as part of other prot…… -
Java classpath with and without colon ‘:’
I'm learning Java. I have a quirk that I think only experienced people can answer (I've completed the whole list of si…… -
Embedded – when rxif flag is set to 1, PIC32 SPI ISR is not called?
I use pic32mx795f512l spi3 module in slave mode My master sent data over the SPI line, but my slave's interrupt servic…… -
java – NullPointerException：Collections. binarySearch(List <？extends T>,T,Comparator <？super T>)line：not available
Print this stack error "collections. Binarysearch (list , t, comparator ) line: not available" int index = Collections…… -
Java – stop the full screen window to minimize joptionpane showMessageDialog？
code private MainApp() /* Extends JFrame */{ DisplayMode displayMode = new DisplayMode(800,600,16,75); ScreenM…… -
Java – JAXB schemagen ungrouping error
I am using JAXB to generate XML schema from my java class, so that other developers can easily create class instances …… -
Java – linkedblockingqueue and primitives
I need a linkedblockingqueue, but I pass the primitive to it The data rate added to the queue is about 4 milliseconds …… -
Java – is the hardware UUID on the MAC reasonable for licensing
OK, I know that no license scheme can be cracked; I'm not asking for one I have used a method in Java that combines th…… -
Embed jetty in a Java application and export it as a jar
I'm making a Java application embedded in jetty web server, which in turn provides content developed using Google Web …… -
Java – spring: create any number of beans using factory beans
I have a factory ish bean that creates many objects at startup. I hope these objects themselves are spring beans If I'…… -
What is the difference between two similar algorithms of Java – 3sum?
I am here http://www.leetcode.com/onlinejudge A 3sum problem was found on the, as follows: Given an array s of N integ…… -
Java – C3PO helper thread deadlock
I use C3PO pool with my GUI application I have the following configuration overrides.put("maxStatementsPerConnection",…… -
Recursive algorithm of space filled Hilbert curve in Java
I'm learning to write code in Java. I've learned the recursive part of Java programming I understand the basics of rec…… -
Check for pending changes when using WPF explicit binding
I have a modal pop-up window that contains a Check@R_955_2419 @, when the user clicks the Save button on the form, it …… -
Java – Preparedstatement and Oracle 10g bug
When we call some SQL in the Java Web application, I have a big but intermittent problem with errors in Oracle 10g. We……