Java
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Java ternary compared with large objects
Ternary operators are usually just a topic of philosophical discussion: a=b>5?1:0; More readable, faster, cooler if…… -
Java interrupts or exits a thread
I have a thread that performs several different tasks Each task depends on the success of the previous task If this is…… -
Inheriting a class without a parent type in Java
How do I inherit from other classes without using a parent type? For example, I hope that car can adopt all methods an…… -
Java chess: not sure how to clone correctly
I am writing a basic java chess game and have written the following classes: game, player, chessboard, square, pieces …… -
How do I convert UTC date strings and delete T and Z in Java?
I am using java 1.7 Attempt to convert: 2018-05-23T23:18:31.000Z become 2018-05-23 23:18:31 Dateutils class: public cl…… -
Is it correct to infer that the default method is used in the interface to make it like an abstract class in Java?
Since we now have default methods in the interface, is it more like an abstract class using both abstract and non abst…… -
Java – when we call a static final variable, why not execute the static block first
See English answers > static block in Java not executed class Test4 { public static void main(String as[]) { …… -
Java – spring boot with bluemix error: no buildpacks detected a compatible application
pace: >Use start spring. IO create a new project > run it locally – work > run gradle task jar > push jar …… -
Java – spring: how to ensure that a class is instantiated only by spring, not by new
Is it possible to ensure that only spring can instantiate a class instead of using the keyword new at compile time? (a…… -
Java color opacity
I have a way to determine the color based on certain values The method is as follows: public Color color(double val) {…… -
Java – graph: find an algorithm to determine the shortest path from one point to another in a rectangular maze?
I am trying to work out an appropriate algorithm to move from the start position to the exit position in the maze 10 3…… -
Java – how to create an optional binding in Guice?
This is my client: @H_ 403_ 8@ @H_ 403_ 8@ class Client { @Inject(optional=true) Service service; } Sometimes we d…… -
Java – findbugs wants readObject (…) private serialization. Why?
I run findbugs on some code and it says that the readObject (...) method must be private to be called for serializatio…… -
Java – how do I download new files only from the server?
I have many CSV files that I want to download from Yahoo Finance every day I want my application to read the creation …… -
How do I convert bufferedimage to / from an image?
I want to convert buffered image to Java awt. Image. My source image is TIF, so I use Jai to read it as planarimage: T…… -
Java simple sentence parser
Is there any simple way to create a sentence parser in normal Java The parser should not only focus on the white space…… -
Java – how to test Guice singleton?
Guice singletons is strange to me First of all, I thought IService ser = Guice.createInjector().getInstance(IService.c…… -
Java – is it easier to use foo when it is represented by the class ArrayList rather than the interface list?
I see a lot of grammar and don't understand the reasons behind it I think you usually want to use classes instead of i…… -
Java – use methods on each item in the array
I have a dynamically populated string array I want to run this function: String[] name = request.getParameterValues("n…… -
Java decimal precision problem
I have a problem. I have to print in long decimal places Solution In C or Java, you won't get so much decimal precisio…… -
Java – list sorting challenges
Suppose I have final Iterable<String> unsorted = asList("FOO","BAR","PREFA","ZOO","PREFZ","PREFOO"); What can I …… -
Is there any way to generate content type headers from file extensions in Java?
I have a Java application that sometimes has to be changed from a file list to a content - type header Is there any wa…… -
Java – is there a way to fix the window?
Is there any way to fix the window so that users cannot change the window size in Java? Solution The frame class (and …… -
How many classes and packages do we have in Java 6?
I want to know the number of built-in classes and packages provided by Java 6 Please provide a web address for this in…… -
Java – monitor Internet activity
I want to design the Java application for montior Internet activity Let's consider opening different browsers and send…… -
How to write a Java directory selector?
How to write a directory selector is as follows: or In Java? PS 1: I'm developing a desktop application. I use swing i…… -
Java – swing component: vertical text problem
If I have a button like the one in this image: http://www.freeimagehosting.net/image.php?4cd775814c.png How can I make…… -
Java – get request parameters in @ viewscoped bean
I have a list from which the user can select "PQ" (link list) When clicking or otherwise entering the browser, the mai…… -
How to wait and close the command prompt in Java
I use the following code to execute the batch file: java.lang.Runtime rt = java.lang.Runtime.getRuntime(); Process pr …… -
Java – convert object to object []
The method in the library I'm using returns an object, but it's actually an array of objects I'm trapped where I need …… -
Java – what does this’ static ‘mean and why
public class tt { public class tt { static{ System.out.println("class tt"); } } This is the first time I have …… -
Java API for calling rest services
Can anyone suggest a better open source Java API to call rest services? I also want to know if the restlet API support……