包含标签：Java 的文章
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Java – how to get the line number in the @ init action of antlr3 tree parser
In ANTLR version 3, how to obtain the line number in the @ init operation of the advanced tree parser rule? For exampl…… -
Java – M2e still provides the error that “plug-in execution is not overridden by lifecycle configuration”, even if explicit binding is used in custom plug-ins
I'm building a plug - in for code generation I have followed the steps here to learn how to create a plug-in: http://m…… -
How to develop producer consumer like applications in Java?
I have to develop an application similar to the producer - consumer problem in Java But I don't know much about Java. …… -
Java – create variables in advance to use (?) in the loop
Which of the two is more "effective": for (int i = 0; i < 10; i++) { int x = i * 2; } Or – int x; for (int i = …… -
How to determine the number of fields set on an object in Java
I'm not sure if I can do this, but I say I have this object: public class SomeObject { private String field1; …… -
java – Android; Declare EditText in the class body (in any method)
I have programming language experience, but I'm a little new to Android programming I have a program that contains fie…… -
java – play framework Exception – field .. No default value
Running my play framework applet, I get the following exception: Error play spit out in browser I have 2 physical mail…… -
Java – stop all AWT / swing threads and monitors and things so that only the main thread is left
I have the following public static void main(String[] args) { boolean running = true; boolean foo= false; …… -
Is java – atomicinteger implemented based on JNI?
Soneone told me that atomicinteger is implemented using JNI, so it is much faster than synchronization It's true? Solu…… -
Lucene in Java, C # Net and C. which is the best version for long-term use on Windows Servers?
I will implement Lucene search into my project. I want to make the best start 1、 Performance 2 Easy to implement 3 Ma…… -
How do I display menus and panels in the same window of Java swing?
I have a JMenu. I want to change the contents of the window according to the buttons in the menu I try to display the …… -
Java – limits the size of the jtextarea to the size of its text
I have a fixed size (300 x 33) jtextarea with line feed enabled. I have added it to JPanel Whenever you type in it and…… -
Java should not be encouraged net. Httpurlconnection, because org apache. http. client. Is httpclient better?
I still see people using httpurlconnection to communicate with websites The forum also has many issues related to http…… -
Java – repaint swing JComponent after interval
I was assigned a project and I had to use the Gregorian calendar object in Java to make an analog clock First, we are …… -
Java – selenium 2 webdriver cannot find the link
I saw other problems about similar / same problems, but they didn't help me solve the problem: (. I logged in to the p…… -
Java – ant build in eclipse failed
After Google search, I used ant to build the jar file of my project and found out how I did it. I mentioned this ink H…… -
Java – Test merge in merge sort
Is there any edge condition or general condition that I need to test this function The only thing I can think of is th…… -
How to confirm a message in message driven beans
In the JMS document, I read that message driven beans do not support client_ Acknowledge mode, only supports dups_ OK_…… -
Java – how byte data types are used to hold memory in large arrays
I see this in the Java documentation My question is how do byte data types store memory in large arrays I'm confused a…… -
Java – ant: what is the easiest way to add a version number to a build jar?
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?> <project name="myPlugin" …… -
Setfocusable method or focusing components Java
I encountered this Code: public class Board extends JPanel implements ActionListener{ public Board(){ setFo…… -
Java – wrong data type – Generic
In the following java code: import java.util.*; public class TestGenericMethod { public static <E> void ArrayT…… -
Java – used in spring Properties without using XML configuration
I found one in the article on using java based configuration and x000 in spring Properties file The illustrations are …… -
Java – run a specific class main function from a jar file Import doesn’t seem to work
I have a jar file that does not specify its main class in the manifest How to run a class from Jar which is not the Ma…… -
What are the different ways to transform XML using Java?
I'm studying how to convert XML from one format to another in a java project What are the alternatives and what are th…… -
Java – unmarshalling with multiple namespaces
So, suppose I have several namespaces of XML <Envelope xmlns:pdi="http://www.mypage.com/schemas/pdi" xmlns:ib="http…… -
Java – please explain why 24,16,8 is used to convert ints to bytes?
The following code is to convert int to bytes array private static byte[] intToBytes(int i) // split integer i into …… -
In Java, all instances of person are linked to an object
I'm currently writing a program, but I found a problem The problem is that in the following loop, all instances of the…… -
Java – logback creates a log file in a folder named the current date
In my current project, I want the date to create a log file, that is, the log file should reside in it The current app…… -
Java array efficiency
I am not 100% sure that the mechanism is in action, so I decided to publish it here for further clarification I'm work…… -
Java – Google common cache – the default value of maximumsize (and other “optional” settings) – you want a cache that uses all “available” memory
I just found guava through the search cache API (it's perfect for my needs) In my opinion, a good default value for ma…… -
Java – how to define the label position of JRadioButton on NetBeans?
I want to define the label position of jradiobuttons on the buttonggroup on NetBeans so that the label is under its Ra……