Java
-
Java – store data in memory
I have "table a" in the database, which contains three columns "col 1", "col 2" and "col 3", with about 1000000 (1 mil…… -
Connecting from Java to SQL server using JDBC (Windows authentication mode)
I need to use JDBC 4.0 to connect from Java to SQL Server 2008.0 Class.forName("com.microsoft.sqlserver.jdbc.sqlServer…… -
java – ExecutorService. Submit (callable) returns a null value for the future object
I am using executorservice to generate threads that perform different tasks When submitting the (callable < T >)…… -
Symfony – how to combine translatable and sluggable in doctrine extensions?
I have installed https://github.com/stof/StofDoctrineExtensionsBundle And use translatable and sluggable on specific f…… -
Emacs – how to execute autocomplete queries in the background?
I'm very excited about Emacs autocomplete mode But my code base is very large. Sometimes, when I type, it will try to …… -
Does Java provide an executorservice that allows workers to execute on the same thread?
I am looking for an implementation of executorservice that will provide the following semantics Each thread is occupie…… -
How to use jsup to extract paragraph text from HTML?
import java.io.IOException; import java.io.IOException; import java.util.logging.Level; import java.util.logging.Logge…… -
NetBeans and JavaFX – clean up and build each run?
I recently started using JavaFX in the NetBeans ide I brought the example of Hello world because it's not complicated,…… -
Java – selectboolean checkbox in JSF
Hi, I'm new to JSF. I have such a problem On my page, I have a list of news, and each news has a check box (we can sel…… -
java – -sourcepath vs -classpath
Learning Oracle certification, I am trying all possible situations that may occur during the exam Let's assume that th…… -
Java – can I pass parameters to enum values?
Suppose I have an enumeration defined as follows: public enum Sample{ // suppose AClass.getValue() returns an int …… -
Java try / catch problem
I'm new to Java. I always encounter problems with the try / catch function in the code, so I wonder if you can help me…… -
Java – @ stateless WebService with JPA JTA: how to submit changes to managed entities?
I have the following simple WebService declared as @ freeless EJB in GlassFish 3.1 Run on 2.2, eclipse link 2.4 1. Use…… -
Accessing C constants (titles) from JNI (Java Native Interface)
How do I access constants defined in C header files from the Java side (through JNI)? I have a header file C_ header. …… -
Java – error syntax SQL exception when reading value with rowmapper
This is my model class //Model public class CustomerData { private String locomotive_id; private…… -
Deep copy of generic types in Java
How do deep copies (clones) of generic T, e work in Java? Is it possible? E oldItem; E newItem = olditem.clone(); // d…… -
My application’s Java lang.ClassNotFoundException
I just received an error report from the device "desire HD (ACE)" recently. I can't recreate my life I checked here1 a…… -
Sun Java / Oracle bug database: new URL?
It seems that the sun website was finally destroyed: http://bugs.sun.com/ Although it still mentions: http://www.oracl…… -
Java – the best way to implement collision detector in OOP
I made a simple physics based game in Java, and I insisted on implementing the collision detection method I have sever…… -
Javacv uses ffmpeg to capture frames
I created a class to capture frames from video When a frame is captured, it is saved as a picture When the video is Wh…… -
Using the dropwizard to process long requests
I have a simple dropwizard service. I want a rest API to start a long-running processing task - including CPU and I / …… -
Java – restrict digital input jtextfield
I'm working on a Sudoku solver. I'm trying to limit the number of cells users can enter and can only enter numbers. At…… -
Creating CSV files using java
I will use java to create a CSV file This is part of the code: try{ FileWriter writer = new FileWriter(sFileName)…… -
Java EE – hornetq: how to reuse xaconnection and xasession
I encountered some problems when trying to reuse xaconnection and xasession on multiple workers in JBoss applications …… -
Java – an effective way to use neo4j to find a node set related to a given node
Given two nodes, is there an effective way to find a set of common nodes (with defined relationships) For example, con…… -
Using the dropwizard to process long requests
I have a simple dropwizard service. I want a rest API to start a long-running processing task - including CPU and I / …… -
Java – error: importing com google. appengine. api. Datastore failed to parse JPA gae GWT
Error in development mode [ERROR] [cbd] - Line 15: The import com.google.appengine.api.datastore cannot be resolved Us…… -
Java – use try catch finally to return the type
See English answers > java's return value in try catch finally mechanism4 private Integer getnumber() { Integer…… -
Java – append video files with different widths and heights
I'm building an application where users can record screenshots An integral part of the application is that you can tem…… -
Java – from system In get Unicode value
I created one from system In to get the input scanner so that I can get the input from the console Scanner scanner = n…… -
Java – how is “AAAA” different from “yyyy” in the context of year values?
Referring to simpledateformat docs, the mode character representing the year is y, so we have YY and yyyy (2013 respec…… -
Rest – Jersey conflicts with javax Servlet
I'm using Jersey and Maven to build a simple rest service For Jersey versions greater than 1.8, the web. In IntelliJ X……