Java
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Java – how to use timezone to parse datetime without t or nanosecond
I am trying to parse the date time string in the following format: 2019-02-22 19:29:43+00:00 I am following this guide…… -
You want to calculate the average value of the tag, but do not print the decimal point (Java)
See English answer > @ L_ 502_ 0 @ 14 public class NotenDurchschnitt{ public static void main(String[] args){ …… -
BizTalk – read twice from DB receive port
My receive port is sqlbinding and polling type It calls SP to obtain records and starts the corresponding business pro…… -
Task – TPL dataflow vs normal semaphore
I need to make an extensible process The process mainly has I / O operations and some secondary CPU operations (mainly…… -
Java – set and get methods
Java I'm here student! It's hard for me to understand how to set and get methods I am working independently in my text…… -
Java – how do I return multiple elements from a collection?
In the list, I need to replace each element with the sum of this element and all previous elements The first element d…… -
Java 8 – streaming with objects and raw wrappers
I am using the Java 8 stream and trying to modify the object content in the foreach terminal operation The problem I f…… -
Java 8 stream, converting object list to map >
I've experienced some examples that don't work for me This is what I want to do: I have a list < someclass > of …… -
Speed of Java – Google App Engine spring MVC annotations
I am developing applications on gae using spring MVC and annotations It takes a long time for the application to load …… -
. Net – ORM example using a single table instead of a single table for the entire hierarchy?
From http://blogs.tedneward.com/2006/06/26/The +Vietnam+Of+Computer+Science. Aspx start "Developers usually take one o…… -
Java – find the algorithm with the least number of transactions between people
I've been thinking about it Suppose you have a list of books that people are selling I have a book. I want to buy a bo…… -
Java – insert rows programmatically (parent and child)
I am using spring and JDBC template This scenario is customer table and orders table - parent - child relationship I w…… -
What is Java util. Concurrent package Net equivalent?
I come from a Java background I think so Net and C # to learn more about concurrency Is there a Java like concurrency …… -
Java – gradle: ‘compile’ cannot be applied
Today, I started a new JDK 11 project with gradle 5.0 (using gradle wrapper) and created a basic build script: buildsc…… -
Java – how to encrypt the password of jconsole password file
I am using jconsole to access my application MBean and use password Properties file However, according to sun's specif…… -
Can I create a Java UDP socket to listen for all addresses?
I want to have a datagram socket to listen to unicast and broadcast messages Is that possible? Solution By definition,…… -
Java – vaadin flow: the difference between components and elements
In vaadin flow, there are elements besides components In the Javadoc of the element, say: What does this actually mean…… -
Java – why is string:: isempty valid when a static context cannot reference a non static method?
I understand the error message I know I cannot access non - static methods in a static context But why can I do the fo…… -
Java – is there any way to set timeout in Tomcat?
Can I set timeouts for JSP pages in Tomcat per page or server level? Solution For the server level, you can try this j…… -
Java – when using Proxool, do you need to explicitly close each getconnection()?
I'm writing new database connection code and think I'll try Proxool as the connection pool implementer Usually, progra…… -
Java – pass reference type variables as method parameters
After running the following code, I get this output: Who can explain why the value of a variable of type person is cha…… -
Java-8 – stick with Java 8 streams
I'm trying to learn how to use streams in Java 8, but I don't know how to operate here I have a list of courses I need…… -
Java – parameterized query: check whether the field is in the value array in the select statement
I'm trying to configure a parameterized query to have the following effects: SELECT field1 FROM myTable WHERE field2 I…… -
Java – Maven plug-in automatically generates setters / getters?
Is there a maven plug-in that can automatically generate setters and getters using the corresponding Javadoc? I know e…… -
Java – is there a way to free the saturated connection pool?
I use open ESB on the GlassFish server We receive this error every few days: an error occurred while assigning a conne…… -
java-ee – ColdFusion web. xml？
For deployment descriptors in J2EE Web containers / Web XML file, does ColdFusion simulation exist? I know that CF run…… -
Java transient key word method sugar?
Why not resolve transients by using annotations instead of introducing keywords? It seems that the transient keyword d…… -
Java – map filter lambda expression using two fields from different class hierarchy routes
We have a method that receives class objects at the top of the class hierarchy It uses a condition based on a field de…… -
Java – how to determine the controller (spring) for a given URL
How to use spring defaultannotationhandlermapping to find the controller that will eventually process the given URL I …… -
Java; Runtime interpretation; Policies for adding plug-ins
I started my first big project It will be a program very similar to Rosetta stone It will be a program for learning a …… -
Java – returns a non hidden file
See English answers > how to negate a method reference predict 12 In Java 8, this can be shortened to: Returning a …… -
Java – slim application server for demonstrating web applications?
I have a small pet web application project. I want to talk to those who don't have an application server (and who don'……