包含标签：Java 的文章
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Multithreading – JPA and threads in the playback frame
I'm trying to create a multithreaded server The problem is that I received the following error: What I want to do is a…… -
java – Spliterator – size vs subsized flags
https://docs.oracle.com/javase/8/docs/api/java/util/Spliterator.html >Is there a case where the sized flag is on bu…… -
Java – tableview cell span
Is there any way to make TableCell horizontal span? I want to create a tableview similar to the one shown in the figur…… -
How do I delete extra space between rows in Jasper reports?
This is my JRXML Code: <?xml version="1.0" encoding="UTF-8"?> <jasperReport xmlns="http://jasperreports.sourc…… -
Java – eclipse and NetBeans web services tools
Some time ago (about 4-5 months ago), I attended a lecture on Java EE, and at some time, the lecturer began to discuss…… -
Java – how driver classes reside in JDBC 4
A good addition in version 4 of JDBC is that you don't have to load it explicitly What's my problem? What if there are…… -
Java – is the localecontextholder secure in the service layer
According to the official documents, the localecontextholder is: So it's related to the current thread, but it's about…… -
Java proxy authentication
I have a Java webapp running in Tomcat 6 that loads RSS feeds from remote URLs I use Rome to handle RSS feeds and diff…… -
Java integer tags and bitwise operations for memory reduction
Is the use of integer tags and bitwise operations an effective way to reduce the memory footprint of large objects? &g…… -
Do java 8 lambda expressions use GPU?
I recently got in touch with Java 8 and I'm trying to learn lambda expressions IntStream.range(0,(screenSize.width * s…… -
Java – how to set a value to a class variable without using a setter
I want to insert a value into the object variable without using a setter How is that possible? This is an example Clas…… -
Java – using wildfly 8’s simple rest API
First of all, I am a novice in this environment I've developed Java before, but I'm not an application server I've nev…… -
Java – JSP string format truncation
Does anyone know how to use tag library to truncate strings in JSP? I want to use Jakarta taglibs, but say it's retire…… -
Java – where can I specify Jackson serializationconfig. In spring 3.1 Feature settings
I'm confused about why the default Jackson is included. Spring seems to have customized the default Jackson configurat…… -
Fileoutputstream access denied: Java
I have the following code correctly integrated with iText library import java.io.*; import com.itextpdf.text.*; import…… -
Java – Eclipse: show the code source of class files?
I'm running eclipse 3.5 2 and is debugging a class that calls methods - let's call it flaky () - in my other Jar file …… -
Java – what is the right maven2 phase to deploy to an application server?
I'm trying to configure POM XML so that it automatically deploys the ear archive to the GlassFish application server I…… -
Do JDK courses have other specifications besides Javadoc?
Do JDK courses have other specifications besides Javadoc? If so, where? For example, refer to collections unmodifiable…… -
Java – an algorithm for calculating public group membership using big data
I need to write a program to calculate the number of times two users are in the same group Users are assigned by user …… -
javax. mail. What’s the use of session?
I'm taking a class in charge of sending e - mail It looks like this (Simplified): /* ... */ Properties props = System.…… -
Java – what can I do to avoid the “out of memory” error when JDBC is connected to SQLite3 database?
When JDBC is connected to SQLite3 database, what can I do to avoid the "out of memory" error? java.sql.sqlException: o…… -
java. util. Date calculation days difference
I tried to calculate the difference between the two dates, and I noticed one thing When only days are counted, the sta…… -
Implement Java_ “Real” definition of home
As a java developer switching between Nix systems (OS X, Ubuntu,...), although I can "get" my JDK and run it at any ti…… -
Java – Guice only registers some constructors
Suppose I have some message classes, as shown below This is a simple combination class public class Message { privat…… -
Java – ArrayList finds the first and last elements
Good evening, I have an ArrayList (instantiated as ld_data), and I query / display element data forward and backward I…… -
Suppress Java findbugs errors (ei_expose_rep)
I have a Java gettor method, as follows: import java.util.Date; //... public Date getSomeDate() { return someDate; }…… -
Java – stop or terminate long-running queries in JDBC
Is there any way to stop or terminate long-running Oracle queries in JDBC? It usually ends up restarting the applicati…… -
Java – when will static nested classes (and static members in them) be loaded into memory?
Here, I try to use the internal static helper class to implement the singleton class for my database connection: packa…… -
Java – how can I call a method of a null object?
public class JavaPuzzler { public class JavaPuzzler { public static void main(String[] args) { JavaPuzzler ja…… -
Why does Java polymorphism not work in my example
I have these four Java claims: public class Rect { double width; double height; String color; public …… -
Java syntax for a list of comparable objects
I'm writing a method that takes unique parameters as a list of comparable objects and returns nothing I'm not sure wha…… -
What should be the size of the icon in the Java – alertdialog?
I'm trying to assign an icon to an alertdialog, but I keep getting a memory error (seems to be from the size of the ic……