Recent Posts
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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 – find hash table with maximum size
I have the following data structures: Map<Integer,Map<String,Double>> ---------------- | | a 2 | |…… -
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 – 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 – 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 8 stream operation
Suppose I have a character stream named s Is it possible to convert a single string into a unary operation of two stri…… -
Why is the string method substring () not in camelCase in Java?
According to Java standards, we should follow camelCase But why is the string method substring () not in camelCase? Is…… -
Java – how do I know how many objects will be created using the following code?
For strings, I'm a little confused about the object situation, so I want to know how many objects will be created with…… -
Java – split string – Cartesian
The following string is given: “foo bar-baz-zzz” I want to divide it into the characters "" and "-", keep their values…… -
Java inheritance method with return type
Is it correct to write such a course? The problem is the method getprice () in the item class Each item needs a getpri…… -
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…… -
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 – do not modify the list, but still get concurrentmodificationexception
This is not a typical concurrent modificationexception problem until you look at another concurrent modificationexcept…… -
Combining functions and predicates in Java 8
In the isbigorder method, if the total price of the products in the order is greater than 1000, it must return true Ho…… -
Java program for factorial incorrect output
I execute the following java code in the eclipse ide public class Programs { public static void main(String[] arg…… -
Java – why does the stream operation repeat with the collector?
Allow me to make some complaints, which may be interesting, but I want to describe: "why did you raise this question?"…… -
Recent Java references?
I've been programming java, but I've been away from it for some time Anyone can recommend a very good java reference, …… -
Java – what is the character char ‘0x8’?
I have a lot of data in the database When I try to read a part of the data, generate some XML and send it to the web s…… -
Java – last working day of last month and localdate
public static String getLastWorkingDayOfPrevIoUsMonth() { public static String getLastWorkingDayOfPrevIoUsMonth() { …… -
Java – switches the number in the int array according to the mode
I've been scanning the Internet and trying to come up with a solution for this simple program. Basically, users enter …… -
Java – change eclipse getters setters syntax
Is it possible for eclipse to generate getvar1 () instead of getvar1 ()? (with capital g) Solution I doubt it very muc…… -
Java – error: the main method cannot be found in the class calculate, please define the main method as: public static void main (string [] args)
See the English answer > "main method not found" error when starting program? 7 Error: Main method not found in cla…… -
Java – fast string search, such as startswith() is not equal to ()
I have a sequence list (a dictionary – 100k words) and many words are often searched in this list Therefore, performan…… -
Java – sort objects by multiple attributes
I've been studying things that require me to classify objects (soft drinks) according to three attributes - Software (…… -
Multithreading – switch to parallel coding
We all write code for a single processor What do we need (software tools, logic, algorithms) to implement this transfo…… -
Java – Installation failed due to invalid URI
[2013-07-21 11:14:01 - AndroidTrial] Installation Failed due to invalid URI! [2013-07-21 11:14:01 - AndroidTrial] Inst…… -
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…… -
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…… -
Java – find coordinates in circles
I'm using Google maps under Grails for mashup. Users can create geonces by selecting points and radii on the map This …… -
Java – Tomcat server timeout in eclipse
I encountered a Tomcat server problem in eclipse I received the following timeout error: Server Tomcat v7.0 Server at …… -
Which simulates the optional parameters in Java better?
I have a Java method with three parameters, and I hope it also has the fourth "optional" parameter I know that Java do…… -
Java – is there a delayed loading implementation of JList?
Is there any way to implement delayed loading with swing's JList? Solution In a way, yes You can create a custom listm……