包含标签:Java 的文章
-
What is the best way to transfer files using Java?
I'm writing a code to upload files from the client to my server, and the performance is not as fast as I think I am no…… -
Java – static variables that span multiple different subclasses – corrected
I want to know that if I define a basic activity object, all my activities are subclasses Then I declare a static vari…… -
Java – spring: init method, postconstruct, afterpropertieset: when to use others?
There are many initialization options available in the spring bean lifecycle Init method, postconstruct annotation, af…… -
What does this Java error mean?
java.lang.indexoutofboundsexception: Index: 1365,Size: 1365 java.lang.indexoutofboundsexception: Index: 1365,Size: 136…… -
Java – format slf4j to record message types using colors
I am using slf4j to log in to my java application It involves a large number of logs and log monitoring Any suggestion…… -
Write a pattern method in Java to find the most common elements in an array
The question is: Here's my code that almost works, except for single element arrays publicstaticintmode(int[]n) { Arra…… -
LRU caching in java with generics and O (1) operations
This is a question in the interview The idea is to define a data structure instead of using Java's built-in LinkedHash…… -
VHDL – why can’t I add this ` STD_ logic_ vector`
What happened here? Why do I get an 'operator parameter type mismatch', and what should I do to solve it? -- -- 32-bit…… -
Object pool for Java wrapper and string
As we all know, sometimes Java uses object pools as wrappers and string types, and sometimes it doesn't For example: I…… -
Java – partially ordered comparator
How to implement Java. Net that sorts its elements according to the partial order relationship util. Comparator? For …… -
Java – how to compare the instance type of an object with a generic type?
How do I write this code in Java? public class ComponentsManager { private List<IComponent> list = …… -
Java – compare strings to JSTL
I have two strings that I need to compare, but even if they have the same value or different, it always enters the sta…… -
Java – can we call the service () method from the destroy () method in the servlet?
This is one of the questions I interviewed the other day: Can I call the service () method from destroy()? Thank you i…… -
Java – how do I go from XML spring scheduling configuration to annotation / code configuration?
I am trying to convert the following spring task XML configuration to a pure code / annotation version: <task:execu…… -
Java 8 extracts the first key from the matching value in the map
Suppose I have a map with a given name and last name pair, and I want to find the given name of the first entry in the…… -
Java ‘prototype’ mode – New vs clone vs class newInstance
In my project, some "prototype" factories create instances by cloning the final private instances The authors of these…… -
Java – Open Source improvement or replacement of swing components
I have developed many desktop Java applications using swing, and swing is very powerful (once you get its suspense). T…… -
Java – failed to start namenode in Hadoop?
I configure Hadoop in Windows 7 from tutorial 16/01/19 15:18:58 WARN namenode. Fseditlog: class not configured for C, …… -
Java – runtime dependency injection and spring
My current project is to use spring, and our architect decided to let spring manage services, repositories and factory…… -
Java – Apache POI uses HSSF much faster than xssf – what’s next?
I use Apache POI to parse There were some problems with xlsx files - I received Java Lang. outofmemoryerror: Java heap…… -
The equivalent of the C shift operator in Java?
C shift operator < do not loop, for example, if you do this: // C++ int a = 1; cout << (a<<38); You get…… -
Java – PMD for inferring arrayisredreddirectly direct rules
PMD has a rule named arrayisstoreddirectly in the sun security rule set: This is their example: public class Foo { pr…… -
Java – tzupdater and tzdata2016g publishing failed
TZUpdater 2.1. 0 failed to publish on tzdata2016g For Java 8, it failed, "source directory does not contain file: vers…… -
Java – map
How to convert map < object, Object > mapping < string, string > in the cleanest way? Is there a way not t…… -
Superscript in Java string
Does Java string support superscripts in strings? If so, then how to use it, I have searched web pages and APIs, but I…… -
java – EntityManager. Merge didn’t do anything
I have a user entity: @Entity @Table( name = "bi_user" ) @SequenceGenerator( name = "USER_SEQ_GEN",sequenceName = "USE…… -
Java – parsing relative paths when loading XSLT files
I need to use Apache FOP for XSL transformation. I have the following code: //Setup FOP Fop fop = fopFactory.newFop(Mi…… -
Java – inheritance in static methods
Why does the following code print "master"? public class Main { public static void method() { System.o…… -
Java – what is Class means a class name
. What does class mean, for example, MyClass class? I understand that when you place the name of a class and the poin…… -
Java – how to verify the use of Guice scope in testing?
I have some tests. If some Guice ranges are used incorrectly, I want to fail For example, @ singleton should not have …… -
Java – what XML data types should be used for money / money?
After reading a few questions about Java data types for money / currency, I decided to use the int / long method to st…… -
Java – retrieves the size of the image in the file system
How to use @ L_ 301_ The size of the image retrieved from the local file system of 0 @ (usually JPEG, PNG, JPG and GIF……