Java
-
Java – find specific file types from folders and their subfolders
I'm writing a method to get specific file types from folders and subfolders, such as PDF or txt, but I can't solve thi…… -
Java – Dao class method naming
I'm using spring MVC and hibernate to build a small java web application. I'm confused about the naming of Dao class m…… -
Java – what database do you want to use?
I'm new to database, but I think I've finally encountered a situation where flat files don't work properly I'm writing…… -
Java – find hash table with maximum size
I have the following data structures: Map<Integer,Map<String,Double>> ---------------- | | a 2 | |…… -
Java: copying properties from one object instance to another
Say you have public class Car{ private Engine m_eng; public Car(){ } public Engine getEngine(){ return m…… -
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…… -
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…… -
What is = =?
>Search this website, no references found int[] test = {0,1,2,3}; System.out.println("test1[3] ++== 0 is " + (test[…… -
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…… -
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…… -
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…… -
Language independent – runnable pseudocode?
I tried to identify existing technologies for the following ideas: 1) The user types a language called (insert_name_he…… -
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…… -
Java – mockito’s spy object in spring
When I try to snoop on objects in unit tests, @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations …… -
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…… -
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…… -
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…… -
Java reflection: finding fields of subclasses
I have a class hierarchy as follows: (= > indicates the subclass of "yes") anonymous instance class => abstract …… -
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 – 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…… -
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 – 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 >>…… -
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: 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…… -
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 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…… -
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 – 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 – understand the “symbol not found” error
What is this mistake? cannot find symbol,symbol: method getstring(java.lang.String) Location: class InternalFrameDemo…… -
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 – 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…… -
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……