包含标签：Java 的文章
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Java – converts dates to timestamps in scala
In Scala, I convert date to timestamp I am doing this: val date = new java.util.Date() new java.sql.Timestamp(new org.…… -
Java – my periodformatter didn’t behave as I expected – what did I do wrong?
I'm having trouble using joda time's periodformatter I want someone to report days, hours, minutes and seconds, but my…… -
Java – joda datetime format for xmlregionancalendar type
I use JAXB 2.2 8-b01 impl, I have a schema, which has an XS: date element, which creates an xmlregionancalendar instan…… -
Java – string S1 = = string S2 (true) but fieldoffset is different
When I was learning Java, I already knew that the correct way to compare two strings was to use equals instead of "= =…… -
How to replace classes in applications running in Java?
I have a class named namegenerator I can use it to generate names based on a given logic Then I write a testnamegenera…… -
If the parent class / interface changes, will the bytecode of the class change?
I am trying to determine whether some jars need to be recompiled in the build chain. If I have the following structure…… -
Java – print ArrayList element?
How do I print element "e" in ArrayList "list"? ArrayList<Dog> list = new ArrayList<Dog>(); Dog e = new D…… -
How to force a java thread to close a thread local database connection
When using thread local database connection, the connection needs to be closed when the thread exists I can do this on…… -
Java – Eclipse: search for strings in selected packages?
How do I search for strings in classes in multiple selected packages? Search multiple strings in eclipse seems to sear…… -
Use Java 5 enumeration as velocity variable
All I need to use Java 5 enumeration in the speed template so that I can write something similar public enum Level{ …… -
Java – how to set default headers for all requests in the Apache HTTP client?
For example, the default user agent can be set to: Solution Httpclient 4.3 now allows a set of default headers to be c…… -
Java – switch to BigInteger if necessary
I am reading a text file containing numbers in the range [1,10 ^ 100] Then I perform a series of arithmetic operations…… -
GradleWorkerMain OutOfMemoryError
I'm trying to score the NetBeans RCP project and find strange gradle behavior Environment configuration Gradle 1.9 Bui…… -
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 ……