包含标签：Java 的文章
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Java exec() does not return the expected result of the pipe connect command
I'm calling a command line program connected through a pipe All of these can run on Linux My approach: protected Strin…… -
Using JPA in WebSphere to select all rows from the database
I try to implement a web service that uses open JPA to access the data layer I use WebSphere v7.0 0 and JPA 2.0 This s…… -
Java synchronization is based on parameters
I am looking for a way to synchronize the method based on the received parameters, as follows: public synchronized voi…… -
Can I remove generic type parameters from object constructors in Java?
In Java, you must write: Pair<String,String> pair = new Pair<String,String>("one","two"); It would be nice…… -
Java – using the interactive console (debug view) in eclipse
Some threads [1] ask how to use the interactive console in eclipse because you cannot enter anything in this console I…… -
How can GDB be used to debug Java programs?
When GDB is used for Java debugging: >What is its practical use? > What are its limitations? > How does it co…… -
Java – how do I get an object / class to tell me which jar file it comes from
In eclipse, an impossible class is being loaded In debug mode, I can pause it and see the call to class A.B.C, but cla…… -
Implement the automatic update function of JavaFX application
I want to write a new cross platform application. I chose JavaFX mainly because of its rich UI Library (standard and t…… -
Java – inline class definition
I've seen several similar examples in Java, and I hope someone can explain what happened It seems strange to me that a…… -
Java – how to monitor c3p0 connections
I used hibernate in the JBoss war and c3p0 for connection pool. They are all in a hibernate in my classpath cfg. Confi…… -
Java – why does a program compile for me, but not for another person?
My code is as follows. It's good for me, but my professor said he was receiving an error because few variables in my c…… -
Java – how do I know if I press shift?
In my game, I hope to use the left and right shift keys for different functions In Java (or another language), is ther…… -
Java – algorithm for generating random numbers of Size X
In my mobile application, I must provide users with a random and unique x alphanumeric code so that users can reply wi…… -
Java – how do I stop the task in the scheduledthreadpoolexecutor once I think it is complete
I have a scheduledthreadpoolexecutor, and I schedule tasks to run at a fixed rate I want the task to run with the spec…… -
Why is there a warning in this Java generic method definition?
I noticed that if I use generic method signature to complete something similar to the return type of common type, it w…… -
Java – mockito: when method A.A is called, then execute B.B
I'm using mockito for JUnit testing class A{ public A(){} public final String a(String x){ return "A…… -
Java Swing animation looks messy How to make it look pro?
Update: semiconplex animation swing timer = trainwreck The ultimate source of the problem is the Java timer, both swin…… -
Java – extract a sequence of bits of any length from the byte [] array
I am looking for the most efficient way to extract a sequence of (unsigned) bits of any length (0 < = length = 16) …… -
Java – PostgreSQL error: undeclared due to user request
What causes this error in PostgreSQL? org.postgresql.util.PsqlException: ERROR: canceling statement due to user reques…… -
Java – detect mouse movement on the screen
I created a mousemotiondetection class, which just detects whether the user has moved the mouse anywhere on the screen…… -
. Net – complex query of ORM (especially NHibernate) performance
Our company is rewriting the existing application from scratch This application and other tasks perform complex SQL qu…… -
Java – IntelliJ: search the project for the source of Maven dependencies
Can I search some text through the source code of all Maven dependencies of the project? For example, if you import th…… -
How to use generics in Java to reference nested types?
How do I create generic classes that reference nested generic types? I'm trying to create a comparator class that can …… -
Java – why not use the element zero of the heap array?
This is the beginning of my rough sketch of a heap with arbitrary values 0 1 2 3 4 5 6 7 8 9…… -
Java – why choose JMS for asynchronous resolution? Why is it better than a simple entity bean?
In most of the projects I participated in, the choice of asynchronous solution has always been the source of a lot of …… -
Java – get threads waiting indefinitely
I have a java thread to handle outgoing communication with the socket I just want the thread to run, and the pending o…… -
Java – why does type promotion take precedence over varargs of overloaded methods
public class Test public class Test { public static void printValue(int i,int j,int k) { System.out.pr…… -
Is the Java virtual machine language agnostic?
To be sure, the Java virtual machine was originally designed for the Java programming language, but now other develope…… -
Java – use the console to read system. Java for IntelliJ in
I need to open the console and use IntelliJ to enter my homework Is there any way to do this? My code is as follows: p…… -
java – org. hibernate. Persistent objectexception: passing detached entities to persistence – using JPA
I'm creating a simple application that just inserts a row into the table (if the table doesn't exist, create it) using…… -
Java – final static method test
I've been studying for my software development course and got this problem from the example: "Why do you have both sta……