Java
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Can I use two Java classes with the same name and the same package?
Can I import and use two different classes with the same name and package in Java? For example, suppose I have two cla…… -
Java – how to use in Net?
Lucene is a good search engine, but Net version is the official JAVA version (the latest stable. Net version is 2.0, b…… -
Java Double vs double：class type vs primitive type
I'm curious about the performance difference between Java classes and primitive types So I created a small benchmark a…… -
How to get the source code of web pages from Java
See English answers > How do you programmatically download a web page in java8 > http://www.cumhuriyet.com.tr?hn…… -
Java – thread exit and uncapped exception: no stack trace
My application is causing a forced shutdown somewhere instead of using the usual (and very informative) stack trace in…… -
Java – hide the program in the windows system tray
I want my program to display an icon in the taskbar status area near the clock in windows and find a way The thing is,…… -
Deadlock in Java: when occurs
I'm developing an application for J2ME. Sometimes it's completely frozen. AMS takes a long time to close it In my opin…… -
Although the serializable interface in Java has no methods and no fields, it can realize its functions What about?
Although Java io. Serializable interface public interface serializable {} surprisingly does not contain any methods an…… -
Java – can I specify a class wide group on a TestNG test case?
I have a base class to represent database tests in TestNG. I want to specify that all classes extended from this class…… -
Java – how to clear bad characters that are not suitable for utf8 encoding in MySQL?
I have dirty data Sometimes it contains characters like this I use this data to query WHERE a.address IN ('mydatahere'…… -
Java’s better way to delete files (if any)
We need to be in file Delete () before calling file. Exists() before deleting the file File file = ...; if (file.exis…… -
Java – why do we need to synchronize on the same object to make notify () work
I got Java lang.IllegalMonitorStateException. I mentioned this problem and it solved my problem The first answer is To…… -
Java – how do I check if a thread terminates?
When does the thread reach the termination state? When the end of the run () method is reached, will it be terminated?…… -
Which mobile phone supports which J2ME (Java Micro Edition) specification?
I can't find the latest chart on which mobile device supports which Java I'm particularly interested in Nokia smartpho…… -
Java – how to get int values from a spinner
I use NetBeans 7.1 to write Java I have a JFrame. I have a spinner with integer value on it. I want to know how to get…… -
Java generics and return types
I've just come across something I don't understand Why is every loop illegal when the second is the same? public inter…… -
How to get datasource or connection from JPA2 entitymanager in Java EE 6
I have a working application that I use Java EE 6 with eclipse link persistence and a PostgreSQL database For user reg…… -
Java – JPA onetoone bidirectional
I have two entity classes with @ onetoone relationships The example code is as follows: public class A { @Id private i…… -
Java – how to redirect AWS SDK log output
Even if I'm using logback and configuring it, I keep getting stdout I can't get AWS out of the console Jun 19,2014 3:4…… -
Create Java Native methods for constructors
I'm writing a program in Java. I want to create a native interface for the library written in C But I'm confused about…… -
Close resultset in Java 7
See English answers > must JDBC resultsets and statements be closed separately although the connection is closed af…… -
Java – when to select JMS API through UDP socket API and vice versa?
It can motivate programmers to use the Java JMS (Java Message Service) API instead of Java in distributed Java applica…… -
Java – how to track row indexes after JTable has been sorted by users?
I have a JTable with the first line blank Now, when I sort the columns by clicking on the column, the blank row is at …… -
Embedding a web browser window in Java
Does anyone know to open an instance of a platform (Windows / Linux / MAC) browser in a swing window integrated into a…… -
How do I use java to capture selected screens from other applications?
We are trying to develop a screen capture utility How do we use java to capture the selected screen of another applica…… -
Natural language processing solution in Java
See English answer > is there a good natural language processing library [closed] 3 Solution The two popular I know…… -
Audio / video capture in phonegap / Cordova using external Java plug-ins
I am developing an Android application using phonegap / Cordova and JavaScript I want to use an external Java plug-in …… -
Generating patterns from entities using JPA2 hibernate eclipse 4.2 MySQL 5.5
I'm new to hibernate / JPA, and I insist it's the last step Solution If you are using hibernate, you can: >Set "hib…… -
Why does this exceed the 65535 byte limit in Java constructors and static initializers?
Disclaimer: I realize that I can generate this at Java runtime. When testing some code, I need a very special case I f…… -
How to parse large (50 GB) XML files in Java
At present, I try to use a Sax parser, but about 3 / 4 through the file, it is completely frozen, I have tried to allo…… -
Java – why doesn’t Maven generate project reports?
This is Maven 3.0 I am creating a new project: mvn archetype:create Then I create a file site / site xml： <project…… -
Java – converts a byte array containing ASCII characters to a string
I have a byte array consisting of ASCII characters that I want to convert to a string For example: byte[] myByteArray ……