包含标签：Java 的文章
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java – Jersey 1. X is replacing the plus sign with a space symbol How can I stop this?
I am using Jersey client to send query parameters to my jersey server This is the query:? sort = id ASC But in my code…… -
How to obtain the localhost network interface in Java or Scala
I'm trying to get the MAC address of my machine in the scala application There are several results when searching, but…… -
Java – how do I check if a field is empty and how do I read the entered text?
How to check whether the text field is empty, that is, if how to store the text in the variable is given, no input is …… -
JMX monitoring / statistics in akka application
In addition to the cluster MBean, is there a built-in JMX public monitoring / statistics that can be enabled in akka (…… -
Java – Hadoop: can you silently discard failed map tasks?
I am using Hadoop MapReduce to process a large amount of data The problem is, ocassionally, a corrupted file causes th…… -
Restrict Java generic parameter types to a list of final classes
T is not limited in the following statement abstract public class Defaults<T> However, my defaults class only ha…… -
Java – URL encoding / decoding replacement space on file name, which needs to be replaced
My product is a web application Solution You can also convert spaces to See: URL encoding the space character: + or% 2…… -
Java – how to read and display large text files in swing?
It may sound a little complicated. I'll try to simplify my requirements At present, I am using the standard reading me…… -
Java – avoid checking exceptions
First of all, I strongly believe that the inspection clause and the unchecked exception are inaccurate because it desc…… -
Java – understanding abstract factory patterns
I've read about the abstract factory pattern on the wiki But I don't understand that using this model is really profit…… -
The reason why dynamic polymorphism of static methods in Java is not supported
Why does Java not support dynamic polymorphism of static methods? Conversely, what happens if Java supports runtime po…… -
javax. net. ssl. SSLHandshakeException：sun. security. validator. ValidatorException
Previously, I could successfully send a request to the web service and receive a response, but it now returns the foll…… -
java – Android Thread. start()CalledFromWrongThreadException
I'm not sure if my prompt is correct because I didn't get the expected output I have a class in which I invoke a way t…… -
Java – prevent Tomcat from interfering with Jersey / jax-rs 2 response body on HTTP error status 4xx or 5xx
I have the following stack of a rest API > Jersey 2 / JAX RS 2.0 > Tomcat 7.0. 47 > Jackson 2 My goal is to h…… -
How to use array type generics in Java?
In Java, I want to create a function that accepts any type of content list and then returns an array of the same type …… -
How many parameters does the varargs tool allow in Java?
I'd like to know how many parameters can be passed using the varargs tool in Java Is there a JVM or memory limit? As f…… -
Java – container level versioned library shared by war
In a java servlet container (preferably tomcat, but if this can be done in another container, then say so) I want some…… -
Symfony – the difference between get (‘doctrine ‘); And getdoctrine();
In symfony, I found three ways to access the doctrine service and entity manager, as shown below: $em = $this->getD…… -
Arrays – function [hashtable []] parameter, which can be from pipeline or parameter
This is a function that accepts a hash table array through parameters: function abc () { Param([Hashtable[]]$tabl…… -
Java – how to obtain module int_ Max’s results?
If I try to apply: integer valueOf(String.valueOf(Integer.MAX_VALUE)“9”); But I need to get the remainder modulus from…… -
Java – why system Nanotime() is incorrect at the beginning of the iteration?
I noticed system The mode of nanotime() Whenever I start an iteration, nanotime () becomes very incorrect in a few lap…… -
Java – stringreader from string Error given in split output
An exception occurred while using stringreader When creating an object, the string I parse is through string Split gen…… -
Java – how to open PDF in a new tab and display it in the browser (no download required)?
I have a PDF link. When I click it, I want it to open a new tab and render it in the new tab, instead of asking me to …… -
Java – run akka with runnable jar
I'm trying to use NetBeans to implement akka. Net in the Java Maven project When I run it from NetBeans, it works norm…… -
Timestamp and time zone conversion in Java and MySQL
I am developing a Java application with MySQL database on a server located in a different time zone from me. I am tryi…… -
Java – Jersey records all response times of the service
I have a Java application and I want to record all execution times of each rest service How to measure the execution t…… -
R. Do all x elements exist in Y
In R, how to test the elements of a vector that does not exist in another vector? X <- c('a','b','c','d') Y <- c…… -
Java – compare 2 integers, strange behavior
See the English answer > why is 128 = = 128 false but 127 = = 127 is true when comparing integer wrappers in Java? …… -
Java – how do I set alerts that are always displayed?
Now, I just want to get some kind of battery status indication when the user accesses the application For example, if …… -
Java – reload via array
So suppose I have an array of length 5 (let's call it myArray [5]) If I add 4 to myArray [3], such as myArray [3, 4], …… -
When should I use POJOs (not EJBs) in Java EE applications?
I am currently learning Java EE I use Oracle Java EE 7 tutorial According to section 34.1.1 of this tutorial In Sectio…… -
Java – how to replace a JPanel with another JPanel in the same location?
I have a JFrame of about four frames After a given action, I want to replace one panel with another in the same positi……