包含标签：Java 的文章
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How to quickly find main () in a java project and use eclipse?
In this case, I have a SRC folder of the project, which has many classes. How can I detect what classes start with the…… -
Java – counts objects with the same attribute value
I'm creating a poker ranking solution. I have to count cards of the same suit or the same ranking in a set of cards He…… -
What is the classpath in Java?
I wrote a program that works on my laptop, but I really hope it works on the server I own Using netbean, I have cleane…… -
How to upload and scan files with anti-virus software on Java?
I'm working on an application that needs file upload, and it also needs I've heard of the APIs application server prov…… -
Java – opencv’s performance in template matching
I'm trying to do template matching basically on Java I use a direct algorithm to find a match This is the code: minSAD…… -
How many array dimensions are supported in Java, such as [1] [1] [1]… [1]?
There is already an answer to this question: > maximum number of dimensions in a Java array3 Solution The array dim…… -
Java solutions for C-style compiler instructions
I have a Java array: String[] myArray = {"1","2"}; I want to assign different values according to the conditions known…… -
Java – Android 8 or later: check Google play service
The method keeps returning 0 According to the developer documentation, if the device obtains the latest version of Goo…… -
When do java generics use transformations at run time?
I'm reading a discussion about C templates and c# generics and how they differ from Java type erasure generics I read …… -
Java – disable digital grouping in jspinner
I need a widget to select TCP / UDP ports, so I wrote the following: public static JSpinner makePortSpinner() { fi…… -
How to randomly select a letter (A-Z) in Java?
If I want to randomly select a letter between a and Z, I assume I have to use the random class: Random rand = new Rand…… -
Java-8 – why can’t @ functionalinterface be applied to Sam abstract base classes
I just started learning camels. The first thing I saw was context.addRoutes(new RouteBuilder() { public void c…… -
Conditional if else statements in Java
See English answers > why does the internal operator unexpectedly cast integers? two public class Pre { public …… -
Java – extends activities in the navigation bar to other activities
I'm trying to create a navigation drawer activity, so I can expand the activity, use menus in all activities and follo…… -
Java – why this numberformatexception?
I have this stack trace (part) Servlet.service() for servlet action threw exception java.lang.NumberFormatException: F…… -
Why does Java use merge sort to sort arrays larger than element 7
According to Wikipedia: But why? Both merge sort and quick sort are o (n log n) Solution The difference of the algorit…… -
Is there a “best” or most popular database with stand-alone Java applications?
Is there a "best" or more popular database with stand-alone Java applications? Update: talk about small applications (…… -
Java – jasperreports is exported to xlsx instead of XLS
I can't find how to export jasperreports 4.1 1 Xlsx file JRXlsExporter There is no xlsx equivalent I can't find a para…… -
Java – Android – open or restart the application after clicking the push notification using the flag activity
I use push notifications in Android When I receive a push notification, if the application is still running, I want to…… -
Create a zero int array in Java
How do I initialize all elements of an array to 0? for example int[] array = new int[10]; return array[2]; Should retu…… -
Java – maps strings to integers
The simplest method in Java is to map a string (Java string) to a (positive) integer (Java int) >Are equal strings …… -
Java – how to determine if the incoming connection is from the local computer
I have a socketserver that accepts incoming connections For security reasons, I should only allow local connections (f…… -
JUnit – main difference: mockito and jmockit
This is what I found when I first tried to use jmockit I must admit that I found the jmockit document very concise abo…… -
Java – Scala divided by zero produces different results
I'm confused about how Scala handles division by zero This is a repl code snippet scala> 1/0 java.lang.ArithmeticEx…… -
Simple adapter problem, fine tune text image Java,Android
Greetings to all ArrayAdapter healthadapter = ArrayAdapter.createFromResource( this,R.array.health…… -
Create an array without declaring size – Java
I've been discussing the same problem, but I can't find the same one as me I want to create an array without declaring…… -
Java – how to implement the same interface multiple times, but with different generics?
There is already an answer to this question: > how to make a Java class that implements one interface with two gene…… -
Java – why can’t object [] be converted to string []
>No error Object[] a = new String[]{"12","34","56"}; String[] b = (String[]) a; >No error Object a = new String[…… -
javax. Persistence field, comment of getter or setter?
I am learning hibernate and Java persistence API I have a @ entity class that needs to annotate each field I've listed…… -
Java – run “MVN package” on “build project” in eclipse
I have Maven java project during the solar eclipse I right click the project and select "build project". I want "MVN p…… -
How to configure Xdebug using Wamp
I'm using Wamp 2.0 and trying to install the Xdebug extension for PHP I have followed all the steps written here http:…… -
Multithreading – creating threaded local objects on Scala
I'm writing a computing library in scala Similar functions I grouped into local Scala singleton objects containing som……