Recent Posts
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Java: polyline of graphics2d version?
OK, so a line2d and a rectangle 2D can be used by graphics2d Draw () instead of graphics Drawline() and graphics Drawr…… -
How to adjust the size of Image / IconImage in JLabel?
This is my code: String s = "/Applications/Asphalt6.app"; JFileChooser chooser = new JFileChooser(); File file = new …… -
Get the string used in Java from JNI
java code The following is a part of the code I wrote in Java. You can see that this is a code named JC_ Verification…… -
Java – ArrayLists using tuple (double, int, int) are slower than two ArrayLists
Is an ArrayList using tuple (double, int, int) slower than three separate ArrayLists? I want to avoid creating a large…… -
Java – customize crud list in playframework html
Hello My model is like this I have an object related to other objects, as follows: @Entity public class MyObjectA exte…… -
Java – save JPanel graphics
I'm not sure how graphics work in Java, so I can't debug my problem This is a quick code that will demonstrate my prob…… -
Java – get the IP address of the Android device when connecting to the 3G mobile network
When I connect to WiFi, I can get the IP address of Android phone However, when you connect to a mobile network such a…… -
A clean technology or library for generating e-mail in Java
At present, our application uses the classic "string shredding" with some string The replace call generates a hybrid e…… -
java – Spring 3 applicationContext-security-JDBC. XML has beans: are beans not beans?
Someone can tell me that I have to use beans in my ApplicationContext: beans instead of beans and how to fix it <?x…… -
Java – why resources Will getstringarray (int) throw an exception?
I'll call you Resources resources = Resources.getSystem(); String[] networkFiles = resources.getStringArray(R.array.xm…… -
Java – EBNF / parsed: how to translate regexp into peg?
This is a problem specific to the parsed parser framework and general BNF / PEG Suppose I have a fairly simple regular…… -
Java – search for tags and save the text between tags as variables
I'm new to Java, but how to search for tags in files, and then all the contents between tags (such as a string of text…… -
Java – how to escape special characters used in SQL queries?
Is there a Java library to escape special characters from strings to be inserted into SQL queries I've been writing co…… -
Java – is it a good habit to package SQL databases in jars?
I want to create a Java library without any dependencies, but it needs to use an embedded SQL database Is it a good pr…… -
java – Apache Commons Math 2.2 Percentile bug？
I'm not 100% sure whether it's a mistake or I didn't do the right thing, but if you give percentile data of the same s…… -
What are the best practices for Java – JDBC connections / result sets / statements
I want to know what is the best practice in the following code snippet. Do I have to close all stmt and RS every time …… -
Java – how to automatically generate reports using Jasper reports
I'm studying NetBeans and want to use Jasper reports to "automatically generate" reports This is a transaction: I want…… -
Java – Apache httpclient content length problem
I tried to publish some JSON to the rest service using Apache httpclient However, I received this error: Exception in …… -
Java – increase the server / client buffer size in kryonet
How to increase the buffer size in the server / client constructor in kryonet? Solution Pass a value greater than the …… -
Java – type conversion required for function calls, with short data type variables as parameters
Whenever I use byte or short data types as method parameters, I need to explicitly convert the values I pass to these …… -
How do I convert Java deque to defaultlistmodel?
I wrote a class containing deque < T > (we call it model. Java), which contains methods for queuing and dequeuin…… -
Java – cannot map control backspace to keystroke
I can't map the control backspace key to keystroke The following is meaningless to me import java.awt.event.KeyEvent; …… -
Java – subclass inheritance using different packages?
Thanks for the great answer about inheritance Another question: Subclasses can always inherit protected members of the…… -
Java – why can’t my JTree be updated when a new node is added to the treemodel?
The defaulttreemodel I used fills in the override of defaultmutabletreenode, which supports optionally changing the di…… -
Java – extract all nouns, adjective forms and text through Stanford parser
I try to extract all nouns and adjectives from a given text through the Stanford parser My current attempt is to use p…… -
Java – should I use connection pooling?
I am writing an ETL project in Java I will connect to the source database, get the data only once, make some transform…… -
Java XML resource pack and HTML content
The HTML content needs to be stored as the value in the resource package (XML format) HTML tags conflict with XML tags…… -
Java – fillroundrect appears to be a problem that cannot be rendered correctly
I have a very simple image generator program. It just draws a rounded rectangle on the buffered image, and then saves …… -
Java – wsimport ant task and JDK 6
I am trying to generate a web service proxy class using Jax WS, and use the wsimport ant task, similar to this questio…… -
Java algorithm problem
Problem statement: in Java, given an integer array, can you select a group of integers so that the group is added to t…… -
Java is equivalent to typeof (someclass)
I try to achieve one Hashtable<string,-Typeof one Class-> In Java But I don't know how to make this work I tried…… -
Java – how do you unit test custom assertions?
Am I writing my own JUnit asset? How do I test? I know how to provide it with something that will pass and make it fai……