Java
-
Java – JPA / Hibernate has too many increments for Oracle sequences
I use hibernate on my java project. I have Oracle dB For an ID column, I determine a sequence with an increment of 1 B…… -
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 – 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 – error creating bean in quartz scheduler
I changed the quartz library from version 1.5 2 is changed to 2.1 2. Using its old version, the project runs and works…… -
Multithreading – why can’t signals / slots work with multiple threads?
class A : public QObject{ class A : public QObject{ Q_OBJECT signals: void a_sig(); public: A(){ } public sl…… -
In Java, enumeration What do you mean?
What is enumeration? > meaning? Is there any way to represent general purpose? Solution <？> Syntax is Java's…… -
What is the reason for setting the minimum Java heap size?
I can set the minimum and maximum Java heap size by passing the parameters - XMS and - Xmx respectively@ H_ 403_ 7@ So…… -
Java swing GridLayout vertical constraint
Can I add components in GridLayout vertical? I mean, the next one is higher than the previous one? thank you Solution …… -
Simple java Pokemon extinguishing simulator
I wrote a class to create and fight Pokemon, but I couldn't figure out how to call the battle method in the tester cla…… -
Java – modify color selector panel
I am creating a color selector and need to modify one of the color selector panels What I want is that I want to input…… -
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…… -
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…… -
Occurs before the java thread starts
I read somewhere that starting a thread has some special effects on events before the relationship Now I'm not sure if…… -
Performance overhead using volatile for setjmp / longjmp
For setjmp / longjmp to work, you need to declare the local variable volatile If someone compiles their code with - O3…… -
Java – select the first index in the collection
I sometimes feel like I'm reinventing the wheel I want to know in Java / Jakarta commons / guava /? Whether there are …… -
Java – do not update the fxml file in eclipse
When I use JavaFX, I encounter a strange behavior in eclipse. When I modify the fxml document in scenebuilder, I save …… -
Java selection: store images in jar or Base64 order?
I wrote a poker simulator / odds calculator On the GUI, there are some JCombo@R_271_2419 @The user can select the card…… -
Java servlet annotation
Is there a way to map URLs to methods using pure Java servlets instead of spring MVC request mapping? It's like: @GET(…… -
Java – convert strings to BigDecimal in Android
Hey, how can I convert a string to BigDecimal in Android This is my first activity: public class ViewCartActivity exte…… -
A program that helps when rendering java code?
I attended a conference where a moderator showed some Java 8 code examples in an application. I was looking for the na…… -
Java – ID generation of hibernate, liquibase and HSQLDB
I created a table with liquibase: <createTable tableName="employees"> <column name="id" type="bigint">…… -
How do I organize my java eclipse project so that users only need to import once?
How do I organize my java eclipse project so that users only need to import once? I'm developing a graphics library. I…… -
Java – stores floating point numbers in an Android database
I tried to store dollar amounts in the SQLite database provided by Android, but it didn't seem to work properly This e…… -
Generics in Java – interoperability with legacy code
I'm reading oracle http://docs.oracle.com/javase/tutorial/extra/generics/legacy.html This tutorial for But I can't fig…… -
How to combine two object arrays in Java
I have this little script to get information from Excel files After collecting the information I need, I want to combi…… -
Java – Maven build failed with an error: the artifact could not be found in the specified path – the path is slightly incorrect
Run this command: mvn package -Pcdh4 This is an error in Maven: [ERROR] Failed to execute goal on project hdfs-nfs-pro…… -
How to put JButton on jlabel?
I am using the NetBeans ide to create applications in Java swing In my application, I put multiple jinternalframes on …… -
How do I call the implementation of generic enumeration in Java?
I'm trying to pass an enumeration to a method, iterate over the enumerated values, and call the methods that the enume…… -
Java – enter int in print
I'm trying to fix the script I wrote: import java.util.Scanner; public class Line2 { public static void main (Stri…… -
Using mailto in Java?
I want to set up a hyperlink in my eclipse java project Solution Yes, you can use desktop mail() Desktop desktop = Des…… -
How to write ORM statements to return filtered data from data objects?
well. I've just started using orm in the ColdFusion application It has been going well until now I encountered this ob…… -
Java garbage collection and graphics processing methods
I am creating a game (snake clone) as a hobby I'm looking at the dispose method of the graphics class in the Java API ……