Recent Posts
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Java – the difference between classes and packages
What is the difference between classes and packages in Java? Solution Class is a declaration (usually an implementatio…… -
Java – is my code too repetitive?
I'm studying my text adventure game and wonder if there's an easier way to write repeated code blocks, such as what I'…… -
Java if() does not work
When I run some code (shown later), I tell it to check the string = = "1". If so, output "it is 1!", Otherwise, the st…… -
Java – a document error that occurs when a node is appended to XML
public static Node createNodeFromXMLString(String xml) throws SAXException,IOException { public static Node createNode…… -
Java – adds a char to the string at position X
public String addLetter(char letter,int position,char[] word){ public String addLetter(char letter,int position,char[]…… -
Java – why does this nested ArrayList code throw an exception?
ArrayList<ArrayList<Integer>> a = new ArrayList<ArrayList<Integer>>(5); ArrayList<ArrayList…… -
Java – what is the difference between these two urlencodings of URL
Some queries encoded UTF - 8 I sent to the server did not return the expected results Namely http://direct.jthinkws.co…… -
Assembly – sometimes why do we need to disable interrupts when A20 is enabled?
In some codes of osdev wiki for enabling the A20 line, we have cli interrupt command In others we don't have them For …… -
Java – add “http: / /” before my address
I extract addresses from a source, but some extracts do not have http: / / addresses in front of them. How can I check…… -
Java: faster overloading or if / else
I have children's classes, and each class has other members who bring different types of value There may be longobject…… -
Java generic pairs stored in HashMap cannot correctly retrieve key – > value
This is pair java import java.lang.*; import java.util.*; public class Pair<TYPEA,TYPEB> implements Comparabl…… -
Java – does spring data JPA need eclipse links and Hibernate?
I've changed spring data from 1.7 1 upgrade to 1.9 0 and get dependencies and compilation errors immediately: For vari…… -
Java – word counting using streams
I try to use streams in Java to calculate words This is what I tried: public static int countWords(String s) { ret…… -
Java-405 error code when calling from Jersey rest client
I am requesting a put operation, and I redirect to the get service URL after the request is executed Here, I face the …… -
Java – camel routing unit test result failedtocreateroteexception
I want to unit test the camel route This is a sandbox example to illustrate the exceptions obtained during unit testin…… -
Java – set the orientdb of the shard
I'm trying to set up on 3 servers For example, I am >Node1 is a client_ 1 and has a client_ Copy of 2. > Node2 i…… -
Java beginners about string [] args in the main method
So I'm just trying to exclude string [] args from the main method It's assembled! But the JVM is displaying an excepti…… -
Java – hosting private Maven artifacts in the GitHub repository
I use the following solution hosting a maven repository on GitHub to host a private Maven repository on GitHub I have …… -
Java – LL1 Boolean operator grammar implements a recursive parser
This is a small piece from the original syntax, and I have to implement the correct parser for recursion We must remov…… -
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 – 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 – check if the file is open
I need to write a custom batch file renamer I've done most of the work, except I can't figure out how to check whether…… -
Boolean expression optimization in Java
Consider the following methods in Java: public static boolean expensivecomputation() { for (int i = 0; i < Inte…… -
Java – executorservice seems to run threads on the UI?
Iam tried to use executorservice to run some code to connect my client to the server Obviously Iam tried to make it ru…… -
Java – how to split large XML into small pieces using vtdgenhuge?
I want to break the large XML into small pieces I am using vtdgen to split the XML file into small pieces, which is su…… -
Java – invalid name pattern when trying to pass custom Oracle type object mapping
Java spring customizes the Oracle type as a parameter and gets the following error I don't understand what the invalid…… -
Java – why not = = work on a string?
See English answers > How do I compare strings in Java? 23 When I run this code, whenever I type "boy", it will onl…… -
Java – what is the motivation for attributes?
I'm a little confused about why language has these I'm a java programmer at the beginning of my career, so Java is the…… -
Java – Android / gradle / unity – contains all dependencies in the AAR plug-in
I want to build a plug-in to wrap unity's latest Google cloud messaging API (GCM) I wrote java code to implement it an…… -
How to use Java libgdx to effectively read text files of floating point numbers?
I am writing a small scientific data visualization application in Java / libgdx The application first reads the text f…… -
Java – change the field name in the elasticsearch response
I need to change the field name in the elastic search response (for example, change "title" to "title") I want to avoi…… -
Java – use hibernate 4 and Postgres’s “select for update of”
I'm using Postgres 9.3 5 and recently updated hibernate from 3.2 to 4.3 eleven As a result, I couldn't run the "select……