Recent Posts
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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 – 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…… -
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…… -
How do I find a location to create a Java singleton instance?
In a large and complex program, it may not be easy to find its location Greetings, RR Solution A singleton usually has…… -
Java – jsoup: Retrieves elements that do not contain specific attributes
I have a table with follow logic >Table display name list > for each row containing < tr class = hiderow >…… -
Java – generic parameters for serializable collections
I have such members in a serializable class: private final Map<String,List<T>> categoryMap = Maps.newHashM…… -
Java – generate MouseMove event using dispatcher?
Do you use Java awt. Component. DispatchEvent (awtevent) does a MouseMove event? .dispatchEvent(new MouseEvent(client.…… -
Java – in wicket 1.5 (. 2), there is no component reloaded on the URL?
For the first time, I used the following URL to navigate to my application: In debug mode, I saw wicket instantiate my…… -
Java – how to write a method that accepts stacks and queues?
So I wrote this very big method If you give it a stack, it will return a stack If you give it a queue, it will return …… -
Java – how do you share a low-level utility class between packages without exposing it to a public API?
I have a library project. I want to restrict the public API, but I also have some low-level utility classes that are s…… -
Java – how to dynamically add projects to listview in Android
Who can help me? I'm trying to create a listview in Android, and I'm trying to load the project into it using code (no…… -
Exception of Java – propertymodel expression: org apache. wicket. Wicketruntimeexception: no get method defined for class:
I use propertymodel as part of dropdownchoice, as follows: List<String> choices = Arrays.asList(new String[] { "…… -
Java – how to distinguish whether two IPS belong to the same computer?
We have client main programs and agents (both) on different computers The network configuration can be any type (we do…… -
Java – how to encode a string to replace all special characters
I have a string containing special characters But I have to convert a string to a string without any special character…… -
Java – jsup cannot get the complete content from the web page [no error / exception, but some content is missed]
I'm trying to get content from the following page using jsoup: http://www.exchangeandmart.co.uk/used-cars-for-sale But…… -
Why does the compiler generate enums in Java?
I really understand that it cannot extend any class to implement enumeration, because it means multiple inheritance Bu…… -
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 – 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 – add value for double [] ArrayList
I have the following array ArrayList<double[]> db_results = new ArrayList<double[]>(); I want to add such …… -
Java – regular expressions match any integer
I have a problem that regular expressions match any int string This is what I have: if(quantityDesired.matches("\b\d+\…… -
Java desktop notification Ubuntu
Ubuntu has desktop notifications at the bottom of the screen My question is how to use it in Java I can't find a solut…… -
Java: how to make this serializable?
I need the following class to be serializable package helpers; public class XY implements Comparable<XY> { …… -
Debugging and publishing configuration in Java NetBeans project
Can I use a debug / release configuration that I can choose between so that I can change some variables when compiling…… -
Java – parsing large xlsx files, date format
Because the xlsx file may contain millions of lines, I decided to use the POI event model to sample from here (example…… -
A good java (Tomcat) soap Library
ANSVER： I have to develop a client / server system that uses Tomcat (6) as the server and the client created in C # T…… -
Java – why doesn’t JPA automatically generate an ID for my row?
I want to use the sequence policy to automatically generate IDS, but I'm breaking my mind to make it work I have no id…… -
Java JPA implementation – how to read / set properties?
I'm reading the book beginning Java ee6 platform and GlassFish 3. I have some trouble understanding the access types o…… -
Entity Framework – Entity Framework 4.1: the navigation property ‘businessuser’ declared on the ‘Login’ type has configured the multiplicity of conflicts
I have two entities BusinessUser { Id(PK),Name,...} Login { BusinessUserID(PK,FK),Email,Password,etc...} The relation…… -
How to read large files in Java as blocks without being blocked?
Suppose you have a larger file and you have memory to process it You want to read n-byte files in turn and will not be…… -
Java – how do I deny site access from iframe?
I noticed that some websites refused to access their registration and login pages from iframes for security reasons In…… -
Java – disable the int spinner plus button
The following code is very useful when the user allocates the total number of statistical points I allocate However, I…… -
java – DiscriminatorFormula
If I have a table and I need multiple columns as discriminators, my only solution is to use @ discriminatorformula? I ……