包含标签：Java 的文章
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Configuration file in Java
I created a swing application GUI, which contains textfields, labels, Check@R_780_2419 @Es and Combo@R_780_2419 @Es an…… -
Use runtime What is the reason for “the system cannot find the specified file” caused by exec? (Association / ftype)
Who knows why these two statements cause the displayed exception? Runtime.getRuntime().exec("assoc .vlan=\"file type d…… -
Java – what is this language feature called?
JPanel panel = new JPanel() { JPanel panel = new JPanel() { public void setBackground(Color c) { Lo…… -
Java – add value for double [] ArrayList
I have the following array ArrayList<double[]> db_results = new ArrayList<double[]>(); I want to add such …… -
Java – why don’t I own this class when it should be in rt.jar?
So, I'm trying to implement LDAP connection in Java... This requires com sun. jndi. ldap. LdapCtxFactory. Jarfinder sh…… -
Java me – DateField of lwuit?
I wonder if lwuit has any DateField / datepicker components? Or, will there be any workaround for the implementation d…… -
Java – cellrenderer and editor reset when new columns are added
I have a table where my columns expand dynamically Initially, I set my table model to 5 columns because the basic info…… -
Java – sockettimeoutexception: read timeout. How to solve it?
I have a swing application that reads HTML pages using the following command String urlzip = null; try { Docum…… -
Java Swing multithreading and UI freezing
I can't think of this Using worker or invoker, the UI will still freeze After downloading each file, I want to update …… -
Java – jtextarea contains only numbers, but negative values are allowed
I have a jtextarea, just accept numbers This is my code: DocumentFilter onlyNumberFilter = new AxisJTextFilter(); …… -
How to create a class by name defined in the type field of a generic class
I want to use Java generics to implement such functions: public class Test<T> { public T data; public t…… -
Java – when should I use multiple instances of Solr?
I need to index three completely unrelated elements (such as product, blog post, location) Solution If you have three …… -
Java – gets the case sensitive name of the file, not case sensitive spelling
I am creating an application from which users can select files: FilePicker. Pickfile (file name) Where filename is a s…… -
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…… -
How to get a clojure handle on a Java static method, similar to_ memfn_ Methods for Java instances?
To handle the Java instance methods that we can call later, we can call the memfn function: user=> (def g (memfn In…… -
Java – managing state in restful based applications
We are evaluating technologies for Web - based applications, and some suggestions are to adopt a restful service appro…… -
Data loss in file transfer – Java?
I have a fileserver and a fileclient. The server sends files when the client connects This is a simple program, just t…… -
Java – how do I move entities to X and y?
I'm looking for a way to move my entity (bullet) to X and y, which is the player's position when the bullet is fired S……