Recent Posts
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What is the difference between byte [] and list in Java?
Both can be used to create byte lists But what's the difference between them? byte[] buffer; List<Byte> buffer; …… -
Java enumeration list in class [copy]
See English answers > java enums: List enumerated values from a class 4 Namely public static <T extends Enum>…… -
Java – an effective implementation of equals (object o)
After I finished writing the title, I read so post, but still decided to discuss the implementation of bugs in Java Th…… -
Java – what is the difference between putting the most likely real conditions in if, else if, or else
Is there any difference in putting the most likely conditions in if, else if, or else conditions For example: int[] a …… -
Java – what is the purpose / purpose of abstract classes? Look for real-world examples
Can someone show me an example of an abstract class in Java? Something with real - World Applications (rather than tex…… -
Java – format for a period of time
In Java, I have a long integer that represents a period of time (in milliseconds) The time period can be any time peri…… -
Java – what is the best remote technology for mobile applications?
I have a Java backend that needs to expose services to clients running in the following environments: > J2ME > W…… -
Vector – gets the array value from the index set
I am looking for a generalization of the nth function Clojure remove item from vector at a specified location Solution…… -
Java – understand the “symbol not found” error
What is this mistake? cannot find symbol,symbol: method getstring(java.lang.String) Location: class InternalFrameDemo…… -
Java – how to split strings with 𞓜
See the English answer > splitting string with pipe character ("|) 5 I separate each letter: My code is String strH…… -
Java – moves all zero values in a large array to the front of it in a time efficient manner
You will get a large array with integral type values. How can you move all zero values to the front of the array in a …… -
Java method links are converted on a single line
I need to add the two values together and store them in the HashMap object as long long total = currentRowContents.get…… -
How to edit template documents (form letters) from files using Java?
This is my first time playing Java. I need to be able to replace some words in the template Sample template – "Dear pu…… -
Java: how to access jobs in try catch – loop?
This problem got me into a huge try catch loop I want smaller So how do I access assignments in a loop? $javac TestIni…… -
Java – order and difference between HashSet and JDK 7 / 8
This is a two-part question: >Whether HashSet implements some hidden sorting mechanisms, or just references documen…… -
Java – retrieves the bits of a number
An attempt is made to retrieve bits of some numbers, such as the flag bit 00001011 of byte 11 below, (byte) 11 >>…… -
The easiest way to extract jars in Java
Basically, I have a jar file that I want to unzip from JUnit test to a specific folder What is the easiest way? If nec…… -
Java – how to set the screen / window size when using ghostdriver
I use ghostdriver as webdriver implementation in Java - based projects I want to take a snapshot of the page The defau…… -
Java – why are array assignments incompatible, even if their data type is?
byte b =10; byte b =10; int a = b; // Primitive data type widening // Works perfectly fine The ab…… -
Java reflection: finding fields of subclasses
I have a class hierarchy as follows: (= > indicates the subclass of "yes") anonymous instance class => abstract …… -
Multithreading – clojure – effectively increases the number in the list at the same time
Short version: what is the right way to store hundreds of numeric lists in clojure, increasing each number millions of…… -
Is it a myth to improve the programming efficiency of Java or c#?
One of the advantages of Java or C # in improving development efficiency is that you should reduce time through comple…… -
Print a list in Java?
I want to print a list in Java @H_ 301_ 8@ @H_ 301_ 8@ r1 r2 r3 r4 This is the code: @ h_ 301_ 8@ @H_ 301_ 8@ public s…… -
Java – mockito’s spy object in spring
When I try to snoop on objects in unit tests, @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations …… -
Java – why do internal static classes extend external abstract classes?
I'm trying to extend some existing code that implements trees using composite patterns As expected, there is an interf…… -
Language independent – runnable pseudocode?
I tried to identify existing technologies for the following ideas: 1) The user types a language called (insert_name_he…… -
What is the purpose of the enum class introduced in Java 5?
My suggestion: 1) The two enumerations only exist before compilation (like generics; but I've never heard anything abo…… -
Java – what happened to “2017-9-21 23:59”?
I used a calender for one minute at a time But something strange happened on the date of "2017-9-21 23:59" The date ca…… -
Java – pass the file as a command line parameter and read its line
This is the code I found on the Internet to read the file line. I also use eclipse and set the file name as SANSHIN. I…… -
What is = =?
>Search this website, no references found int[] test = {0,1,2,3}; System.out.println("test1[3] ++== 0 is " + (test[…… -
Java – make jlabel disappear
I am writing an application to perform a task and notify the user when the task is successfully completed Inform the u…… -
Java – how do I close the JFrame by clicking the button?
I want to have a button in my window. If I click it, the window will close I found that I can close windows in the fol……