包含标签：Java 的文章
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In Java, if only the last numeric item is replaced, what is the best way to sort an integer array?
This is an array of integers Solution Take the last element as an insertion sort -
Java – dagger 2 activity injection does not work
I'm trying the new dagger 2. This is my first time to implement it, but I can't make it work I think I got the concept…… -
Can Java modules call C modules?
Just out of interest, can I call the C module from the Java module? If so, what should I do? Solution Yes, you can do …… -
Java – looking for numbers greater than the average – why doesn’t my if statement work properly?
I'm testing a program that contains different text files of randomly generated numbers The Java program is built to ad…… -
10 Ethernet in Java?
Does Java 6 support 10 gig Ethernet out of the box? It doesn't seem to require Java changes, but I think I remember th…… -
Java – deletes the last known entry in HashMap on map
OK, so this is a different bit I have a new HashMap private Map<String,Player> players = new HashMap<String,P…… -
Using interfaces in Java New problems
Suppose you have a displaceable interface and a class circle that implements displaceable Displaceable has a method ca…… -
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 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 perform memory analysis on remote Java Web Applications
I know we can use tools like jpprofiler Any ideas? Solution You have visualgc, which is not very advanced, but you can…… -
Java – how to find an executed SQL query that does not return anything?
import java.net.URL; import java.net.URL; import java.net.URLConnection; import java.sql.*; public class searchlink{ p…… -
Java – why use the “this” keyword in constructors and setters?
Constructor is used to initialize a value and assign it to class variables when creating class instances, right? publi…… -
Java – Method override
class A class A { int i=10; void show() { System.out.println("class A"); } } class B extends A { int i=…… -
Java – why doesn’t my rating bar change the user’s touch?
I tried to add a rating bar to my campaign But I can't add or delete stars on the user's touch What should I add? <…… -
Java – when using batik in webapp on tomcat, “sax2 driver class org.apache.crimson.parser.xmlreaderimpl not found”
This may be related to the classpath problem, but I'm not sure yet because I don't have this error on some machines Th…… -
Java – lint found a fatal error when assembling the release target
I am compiling my application for publishing, and I receive an error saying: <issue id="UnkNownId" severity…… -
Default class extended by all classes in Java
In Java, by default, do all classes extend the default class? Example: if I have a simple class, such as: Class A { St…… -
Java – switch statement, which defaults to the previously defined switch case?
I want to do something like this: int i = 0; switch(difficulty) { case 1: i++; break; case 2: i--; break; …… -
Java – sum of substrings of numbers
What is the best solution to find the sum of digital substrings? For example, sum (123) = 1 2 3 12 23 123 = 164 I thin…… -
MD5 uses iso-8859-1 string hash in Java
I am implementing a digital payment service interface called Suomen verkkomaksut Information about payment will be sen…… -
How to add multiline labels on the Java GUI?
I made a Java Swing GUI Now I want to display a static message on it, but the message is multi line and jlabel is sing…… -
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 – 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 …… -
How do the consumer and begin methods work within the Java functional interface
Who can let me know how the following procedures work internally: public class Main { public static void main(String…… -
Java – how do I automatically log in to this site using system credentials?
I need to develop a web application for intranet users I don't want them to enter login credentials every time they vi…… -
How to change only Java net. Protocol part of URL object?
I have a Java. Net that uses HTTPS protocol net. URL object, for example: https://www.bla.com I only need to change th…… -
Verify the URL in Java
Who knows how to use regular expressions to verify the URL format in Java? thank you Solution A very sneaky way is: tr…… -
How to “time out” functions in Java?
private String indexPage(URL currentPage) throws IOException { private String indexPage(URL currentPage) throws IOExce…… -
Java reference
Is there a way to find all references to objects (in Java)? I have an object cache and want to scan it regularly to se…… -
Generate getter / setter in Java (again)
I'm thinking about writing class MyClass { @Get @Set protected int aValue; } Then, get is automatically generate…… -
Java – why not run server-side applications with daylight saving time enabled?
I have implemented a server - side application that records the timestamp when the record is created and updated The a…… -
Java – find two pairs from an array of integers in two elements
Two pairs: if there are two pairs of dice with the same number, the player scores the sum of these dice If not, the pl……