包含标签：Java 的文章
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Java – can I add keys / values to a map in a map in one line of code?
I have HashMap 1, which contains five keys. All keys have hashmaps as the value I want to add key / value pairs to the…… -
Java – wowza authentication using external jars
This is the source code of jar: public class WowzaTesting { boolean authStatus = false; public boolean authen…… -
Java – get different results when rounding decimals
double radius = 5; double radius = 5; double area = Math.PI * Math.pow(radius,2); // System.out.println(ar…… -
Java – resource never closed in try with resources when method linking
try(InputStream in = url.openStream(); Scanner scanner = new Scanner(in).useDelimiter("\\A")) { try(InputStream in = u…… -
Java – error running calendar API sample code
Attempt to implement from https://developers.google.com/google-apps/calendar/quickstart/java Started Google calendar c…… -
java. io. Is filewriter designed for one-time use only?
I'm using Java io. Filewriter builds a program that keeps writing to the same file During runtime, whenever I need to …… -
Java – Tomcat uses defaultservlet to get static content in external directory
I have a simple web application that allows users to upload and access files When users access uploaded files, the ser…… -
Java – recursive code that runs slowly on the UNIX box but fast on windows
I have a java code, which is a combination of while loop and recursion The problem we face is that for the UNIX box [H…… -
The Java chrome selenium CI test was suspended randomly for 3 hours
Our CI Java chrome selenium test hangs randomly for 3 hours before socket timeout We get an error: 2015-08-31 10:18:47…… -
Java – Jfilechooser with custom filesystemview implementation
I extend filesystemview and override every method in this class The model is as follows: public class RemoteSystemFile…… -
Java outputs even numbers in exponential format
I have some even numbers output in this format: Format.String("%1.4e",doubleNumber); The result is 1.123456e 03 How to…… -
Java – int / long,float / double
I understand that "2.5" is automatically double. In order to make it a floating point number, I need to do "2.5f" (or …… -
Java – eclipse type erasure
I have a method defined like this: public <T> T methodName(Class<T> clazz) My unit test I mistakenly teste…… -
Java – bubble sort 2D array
I need to build a bubble sort 2D array code The trick here is that I can't use the one-dimensional array helper or mov…… -
Java – JPA onetomany list cannot find mappedby attribute that should be inherited
We are currently making some requirements. We must add some similar entities (car pictures, pet pictures, holiday pict…… -
selenium – junit. framework. Assertionfailederror: test not found in register
I had a problem making this test case work Who can point me in the right direction? I know what I did wrong. I just do…… -
Strange array behavior in Java
This is a simple array declaration and initialization int arr[] = new int[10]; for(int i = 0; i<arr.length; i+…… -
Java – how long does the HTTP connection remain open when we use the asynccontext mentioned in the servlet3 specification?
How long does the HTTP connection remain open when we use the asynccontext mentioned in the servlet3 specification? fi…… -
java – Android . The AAR library interface parameter name is missing
I use Android studio (1.2.2) I built an Android module library, which declares an interface: public interface myInterf…… -
Java – SQL SELECT statement with where clause
How do I write this SQL statement without a hard coded value? resultSet = statement .executeQuery("select * from m…… -
Can I access Gmail mail through POP3 and oauth2 in Java applications?
I'm developing a Java application and I need to access Gmail mail So far, I can use OAuth mechanism to connect to Gmai…… -
Java – my shaderprogram doesn’t work
My main language is French. I will try my best I try to understand shaders, but I can't find out why my shaders don't …… -
Java – the order of bean initialization in spring
My spring configuration file has the following beans: @ h_ 419_ 7@ <bean id="myList" class="java.util.ArrayList">…… -
Is it a good habit to use Java 8 for Android development?
I read the instructions for Android development using java 8 from this answer and (orfjack / retroambda) I wonder if i…… -
Configure Java HBS to find the location of some templates
In short, Java HBS (jkack. Handlebars) is looking for some templates in a directory completely different from the pare…… -
Java – the entity manager does not answer until the Native Query call is completed
I used hibernate and Oracle SQL in the project When I call the createnativequery method of the entity manager, the ent…… -
Java Collections API Bug？
I stumbled upon collections An error in the Java collections API in Java The following is the code in the JDK source c…… -
How to write Fibonacci Java programs without using if
What is the code written in int Fibonacci (int n) instead of using "if" Java recursive Fibonacci sequence as they do h…… -
Restful web application in Java (Security)
We are developing two web applications I only access application a through my application B, and I don't want any othe…… -
Java – create route on camel using domain
I'm running an instance of Apache camel to proxy requests to another server (depending on the URI) The server camel is…… -
Java collection filtering
I have such things: public class Foo { public String id; } and Vector<Foo> foos; I need to get an object from …… -
Java-8 – disadvantages of the javac – parameters flag
I want to try some framework functions that require parameter names at run time, so I need to compile my application w……