Java
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How to generate random numbers using Java in a given number list
Suppose I have a number / vector number, such as 1,3,7,9, and then I need to guess the number in this list at random U…… -
Java – business logic of the client
Why do people say that business logic should be implemented on server-side code (such as EJB) rather than on client-si…… -
Why does BigInteger’s stackoverflowerror in Java end up as an integer in the 19635th Fibonacci sequence
I use the following code to calculate the Fibonacci sequence to any large number The code worked as expected until I a…… -
Java – find the largest palindrome made by the product of two 3-digit numbers
package testing.project; package testing.project; public class palindromeThreeDigits { public static void main(S…… -
Java – when comparing two equal integers in a while loop, does the equal operator fail?
I post two examples below Example 1: Integer myVar1 = 42985; Integer myVar2 = 1; while (true) { if (myVar2 …… -
Java regular expression performance
I'm trying to parse links with regular expressions in Java But I think it's getting too slow For example, to extract a…… -
Suspend and resume the main thread in C for windows
I need to be able to pause and resume the main thread in Windows C applications I used it handle = GetCurrentThread();…… -
Java – button with rounded corners in Android
I want to create buttons such as the register and login buttons >Using shape drawable The results so far are not sa…… -
How to map a vector to a map and push duplicate key values into it?
This is my input data: [[:a 1 2] [:a 3 4] [:a 5 6] [:b \a \b] [:b \c \d] [:b \e \f]] I want to map this to the followi…… -
Java – it is not a good practice to use arrays as parameters to return multiple values
I sometimes (actually, often) find myself using a single element array to return multiple values from a method Somethi…… -
How do we divide integers into vectors in r that make up numbers
I think an example should make things clear I have I would like some_ 1 to the following a_ Function of 2 Solution Con…… -
How to use java to move the mouse smoothly across the screen?
There is a MouseMove () method that causes the pointer to jump to that position I want to be able to move the mouse sm…… -
What does a java thread do after running?
In a game, I'm using many instances of a thread, and it won't track them clientThread cT = new clientThread(socket); n…… -
Java – draw a point on the JPanel
Is there any way to use Java awt. The graphics class draws a point on JPanel? I can't find any such way There are many…… -
java. sql. Sqlexception: ora-00932: inconsistent data type: expected number to get binary
I have a method in Dao class that returns list < object [] > Back, I'm using named queries public List<Object…… -
When we assign integer to int in Java, why doesn’t the compiler make an error
When we assign integer (object) to int (primitive), why does the compiler not make an error? int i; Integer ii = new I…… -
Java – Android WebView, zooming content to fit the screen
My friend created an application using JavaScript and uploaded it to his website Now I'm trying to wrap it in WebView …… -
Java settings have multiple equality criteria
I have a special request. I need to delete the object list repeatedly according to the combination of equal standards …… -
How to convert an existing Java Import class file into Android studio project
I need to know how to convert existing Java The class file is correctly added to the Android studio project My goal is…… -
Java singleton internal class error understanding
I have been programming java for the past two months, but I have experienced programmers in Python and C I know I made…… -
Need help to start converting original G3 fax files to TIFF format via Java
I have an original fax file (G3 / T.4 format), which needs to be programmatically converted into multi page TIFF throu…… -
Java – why does spring security use the default pre authentication check?
I recently implemented some security improvements in a spring based Java application of my employer, and I have covere…… -
Java – problem converting Base64 string to hexadecimal string
TLDR： I recently decided to try Matasano crypto challenges, but for whatever reason, I decided to try to write the fi…… -
Java – combines two strings into a single string representing a path
See English answers > how to combine paths in Java? 9 How can I do this? Solution Apache commons IO do what you wan…… -
The simple java implementation of the Floyd warhall algorithm doesn’t seem to work?
I have been trying to implement Floyd warhall algorithm in Java instead of "three loop nesting", but I can't seem to f…… -
Non public top-level classes in Java
What is the reason for creating non-public top-level classes in Java? Suppose we have foo Java, there may be class Foo…… -
Java – use log4j to customize the log file name in mule
I'm trying to modify log4j XML to use the appropriate appender to change the log file name generated by mule This is l…… -
Java – ora-01733 (virtual columns are not allowed here) after database update
One of our databases has been updated from Oracle 9i to 11g Since then, one of our programs has repeatedly encountered…… -
Disable the close button in the Java Jface dialog box?
How to disable the close button in the Java Jface dialog box (if possible, make it disappear completely)? Solution For…… -
How to display two list item results as one to obtain multiple results Using Java in selenium webdriver
Here, you need to combine the two list data to print the two list results in a specific format For example, as shown i…… -
Java – Android music player in UI thread or background
I'm trying to create a simple Android application to play audio files in SD card >By default, the service runs on t…… -
Java – spring boot Jar – missing embeddedservletcontainerfactory
Spring boot (1.2.7) web application (responding to SSL request) runs well on IntelliJ idea Build a jar artifact to run……