Recent Posts
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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…… -
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 – 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.…… -
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.…… -
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 – 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…… -
How to parse this JSON response in Java
I want to parse these JSON responses: { "MyResponse": { "count": 3,"listTsm": [{ "id": "b90c6218-73c8-30bd…… -
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 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 – 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…… -
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 (…… -
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…… -
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…… -
Java – spring launch security configuration – AuthenticationManager must be specified
This is my main application configuration @SpringBootApplication public class Application { public static void ma…… -
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 – 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…… -
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 – 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 – which continuous integration library do you use?
I used cruise control as the CI framework in my last project (I didn't find CruiseControl lacking, I just want to know…… -
Java – a substitute for hibernate or TopLink?
Is there a viable alternative to hibernate? Things that are not based on JPA are preferred Our problem is that we are …… -
Java – convert iso8859 string to utf8? Ä Ö Ü = > Ã why?
What's wrong with this code? I made an iso8859 string Therefore, most of them are krypooutput No problem. But how do y…… -
Java – cookie domain contains dot?
I use GWT's cookies class to generate cookies When I use the following Cookies.setCookie(LOGIN_COOKIE_NAME,value,expir…… -
Java – how JPA adds a unique constraint on the column of the @ onetomany relationship, for example, on the user name
I have a class website representing websites and class users The site can have multiple users class Site { privat…… -
Java – how to check if a class exists
Is there a static method of 'class' that can tell us whether the user input class (in the form of string) is a valid e…… -
Java – how do I get the method name from this method?
I tried to create a function that returns the method name from this method: public static String getmethodName(final i…… -
Java – wait for jdialog to close
I have a class filepathdialog, which extends jdialog, and this class is called from a class X This is a method in clas…… -
System and Java
I'm a new Java user Recently, I learned that (we use it in system. Out. Println) is a Java standard output object My q…… -
Assign int to byte in Java?
int val = 233; int val = 233; byte b = (byte) val; System.out.println(b); I have a simple example: I have an integer w…… -
Multithreading – waiting for any given future in scala?
Suppose I need to perform some parallel tasks in scala Each task performs some blocking calls (for example, process. W…… -
Java extending class containing main method
I use the following code as part of my assignment class Base { public static void main(String[] args){ System.ou…… -
Java – when the enumeration type reference is class How do I convert a string to an enumerated value?
I have code to set values on objects using the setter method One of the setters takes enum type as a method parameter …… -
Java – vector vs ArrayList performance test
Everyone said that vectors should be used because of performance (causing vectors to synchronize after each operation ……