Java
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Java – why can’t I access my panel’s getWidth () and getHeight () functions?
I'm writing a simple program to test the basic GUI The program prints a letter in the middle of the screen, allowing t…… -
Java – gradle compiles but does not run TestNG tests
We just started using gradle and TestNG in our project, so I'm checking if there are actually no test failures I was s…… -
Java – a better way to create AES keys than secure random
I need to send encrypted data from the Java client to the c# server Now I'm learning how to encrypt data using AES Acc…… -
Error message: “when debugging PHP with Xdebug and eclipse, the script is terminated unexpectedly, and debugging is over”
I encountered the following errors while debugging: PHP. Ini settings: xdebug.remote_enable=true xdebug.remote_host=l…… -
Java – spring launch security configuration – AuthenticationManager must be specified
This is my main application configuration @SpringBootApplication public class Application { public static void ma…… -
Using listproperty in JavaFX
I defined a class that contains a list I tried to initialize the list in the constructor with the transport list: publ…… -
Object array, the difference between Java and C
I'm new to C. I'm porting a java project to C Consider the following java code, where piece is a class representing ch…… -
Java – is there a big difference between UTF-8 and utf-16
I called a WebService, which gave me a response XML with UTF-8 encoding I checked it in Java using the getallheaders (…… -
Java – how to implement observer to get data from listener?
I am using the materialdrawer library to create a simple drawer for my application. Some class instances in the librar…… -
How do I replace a string in Java that contains dot?
I need to replace the string that contains spaces and periods I tried the following code: String customerName = "Mr. R…… -
Java – change the app name in eclipse
I finished my quiz application a few days ago Now, I want to release a second quiz with different questions I copied t…… -
How to parse this JSON response in Java
I want to parse these JSON responses: { "MyResponse": { "count": 3,"listTsm": [{ "id": "b90c6218-73c8-30bd…… -
Java – how to get latitude and longitude information from a picture
How to obtain longitude and latitude information from the picture storage in the device or SD card? Solution I found a…… -
Get the return list from foreach Java 8
I'm trying to use stream to deal with something. I think I have a conceptual misunderstanding I try to get an array, c…… -
Java – HQL, where in indicates an empty list crash
I have an HQL statement like this: Select cast(ed.employee.employeeID as int) AS emp_id FROM Education AS ed WHERE ed.…… -
Java – add date string 1 day
I have a date string newdate = "31.05.2001" I must add one day I tried the following code: String dateToIncr = "31.12.…… -
Bit level operations in Java
I'm trying to do something in Java to apply masks, representation sets, etc int one=1; int two=2; int andop=1&2; S…… -
Java – xssfcellstyle setfillforeroundcolor and setfillbackgroundcolor do not work
I try to use setfillforeroundcolor and setfillbackgroundcolor to change the cell color of Excel file But I failed. I r…… -
Determine whether the document is doc or docx in a Java application without knowing its extension
There is a constraint in the content management system that requires all word documents with a specific extension to b…… -
Java – how do I close a socket immediately, bypassing the timeout period?
In Java, when you close a socket, it doesn't do anything, but it actually closes the TCP connection after the timeout …… -
Java – fastvector type is not recommended
I tried to get an arrf extension output file from a multidimensional array in Java I imported the Weka library, but I …… -
Will the “count limit” expression of the Java – for loop be evaluated only once, or each iteration?
If I call the method in the conditional statement of the loop, do I call it at every iteration of the loop? For exampl…… -
How to use Java’s org w3c. dom. Get text from node_ TagName for node
In the interface's documentation, it declares that text nodes return "#text" as their name instead of the actual tag n…… -
Java – add filters to Project Explorer in eclipse
I want to add a new filter in Project Explorer to hide it from users in @ L_ 301_ 0 @ some projects automatically crea…… -
Java – how do I get host names based on IP addresses?
I want to find the host name based on the IP address given in the program Solution Yes, it may import java.net.*; publ…… -
Maximum limit for Java arrays
I tried to create a 2D array in Java, as follows: int[][] adjecancy = new int[96295][96295]; But it failed with the fo…… -
Java – lwjgl cannot find the display class
I have installed lwjgl into the Java project. I can't import the display class import org.lwjgl.opengl.display; An uns…… -
Java – double check locking using regular HashMap
Back to concurrency So far, it's clear that for double check locking, variables need to be declared volatile However, …… -
Java – accessing application properties in spring MVC
New features of spring MVC I think so Two properties are stored in the properties file (uploadfolder =.., downloadfold…… -
Java – lwjgl cannot find the display class
I have installed lwjgl into the Java project. I can't import the display class import org.lwjgl.opengl.display; An uns…… -
Java – sort the (array) list in a specific order
I have a list of objects that I want to sort in a defined order Before sorting: After sorting: orange …… -
Java – eclipse generates getters / setters for domain objects and class members with’m ‘suffixes
I have a small problem with the getter and setter methods generated in my domain object class User{ String mName; List……