包含标签：Java 的文章
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Java – sort in array
When I try to sort, I have a problem with my method: This is what my code looks like: public void sort() { boolean …… -
Java generics – insert internal type parameters
I'm new to Java I just want to pass comparable < string > into the method parameter of generic type < e exten…… -
Java – running functions on JButton
I'm trying to create a program in Java that uses a robot to press a specific key every few seconds It has a GUI with s…… -
Java – simple examples of errors in Hibernate beginner level
In order to learn hibernate, I wrote two examples of exercises However, they all have the following errors: Basically,…… -
java – Android – Webview Progressbar
I added a progress bar to WebView I want to have progress bar coverage on WebView. I want to display the percentage of…… -
Java – headless painting
I want to draw JPanel as buffered image in headless mode (there is no GUI on the screen) final JPanel panel = createPa…… -
Java – JBoss application server and Servlet
I downloaded the latest version of JBoss. Com from JBoss website I created a dynamic web project and created a servlet…… -
Is java – readfull() at risk of suffocation?
I notice that when I use readfull() on a file instead of read (byte []), the processing time is greatly reduced Howeve…… -
Java – no JIT optimization
Look at this question: code: class test { public static void main(String abc[]) { for( int k=1; k<=…… -
How to delete the question mark in joptionpane?
How do I get rid of any markers in the upper left corner of joptionpane? int result = JOptionPane.showConfirmDialog(nu…… -
Java: understanding the execution of static methods
There are printa in class A and printb in class B. There are two methods Printa is a static method and printb is a non…… -
Square root in Java
Should I write in Java like that? If not, how should I write it? import java.util.*; public class Soru { public st…… -
Filling Java beans with opencsv – Code Description
I just started using Java and have a lot of missing knowledge, but I need to write a simple class that will use opencs…… -
Java – why not use a pseudo-random number generator to generate test data?
Test the correctness from the Book Java concurrency in practice, chapter 12.1, especially 12.1 3 test security (the au…… -
Java – Eclipse: get null display
I tried to pop up a dialog box (i.e. a FileDialog) in the Eclipse Plug-in. In fact, I was running the relevant UI laun…… -
Java – find friends of all users: how to implement Hadoop MapReduce?
Say I entered the following: (1,2)(2,1)(1,3)(3,4)(4,1) The output is expected to be as follows: (1,(2,3,4)) -> (1,3…… -
Can I construct arrays in Java without the number of elements?
There are some problems when using arrays in Java If I declare a character array like this, my program will throw an e…… -
Java – does it create a new string object every time I use string?
Suppose I need to iteratively retrieve the value of the same key from Java HashMap for(int i=0; i<INTEGER.MAX; i++)…… -
How can I deny Java fraction? This is a class I created
This is my fraction class code. There are several methods. My requirement is to take the numerator as a denominator: /…… -
Java – draws a smooth color scale and assigns a specific value to it
I am considering a new implementation, a simple 2D graphics matrix, in which the color of the items depends on the val…… -
Java – generate a large stream for testing
We have a web service. We upload files and want to write an integration test to upload a slightly larger file The test…… -
java – inflater. Inflate gives the nullpointer in the adapter getview method Why?
In my Android application, I'm building my first custom adapter. I now encounter a nullpointer in my expanded convertv…… -
Java – avoid using the final method when using mockito for unit testing?
Mockito is not allowed to laugh at the final method I don't want to change the implementation details just to make the…… -
Java code for calculating the number of nights in the date range (00:00:00)
I'm trying to write a Java block to find noon in a specific date range For example: Start date: 05 / 01 / 2014 00:00:0…… -
Java – every environment configuration for Android
What solutions does Android provide for each environment configuration? In the web world, I'm used to c# having config…… -
Java – abstract classes return instances of private nested classes
I want an abstract class A Then I want a class B that can only be instantiated by A No one else can access B – only a …… -
Java – JPanel in jtabbar is not scrollable
Enter the code here. I have the following questions I added two jpanels to a panel and finally added it to my tabbedpa…… -
JavaFX charts, snapshots
I'm trying to get a snapshot of my java popup The Java window looks like: But the snapshot looks like: http://www.dire…… -
Java – akka – implement a custom deadletterlistener actor
I'm trying to add other behaviors to deal with dead letters in akka I think the best way is to implement our own dead …… -
Java – why did this background task fail due to a fatal exception?
The following code in my mainactivity failed with a fatal exception in the overridden doinbackground() method: public …… -
Java – parses strings into integers in the BeanShell sampler in JMeter
I'm trying to parse a string into an integer in JMeter, but I failed due to a follow error If I try to print vars Get …… -
Aggregate function on list in Java
I have a list of Java objects and I need to reduce it to apply aggregate functions, such as through database selection……