Java
-
Java benchmarking tool
I wrote a small java application. I need to get performance indicators, such as memory utilization, running time, etc …… -
Java – how to create a test environment for multithreaded applications
All, Recently I developed a code, which is said to be a thread safe class Now I say 'so-called' because even after usi…… -
Parsing data from CSV to array in Java
I'm trying to import CSV files into arrays that can be used in Java programs The CSV file was successfully imported in…… -
Java array index out of bounds
I just started a unit in arrays, and I gave some sample code to see this very basic array starter Basically, all I hav…… -
Java – unit testing, static and factory
I'm implementing a model in Java. It needs to iterate a set and go through some identification stages. It involves loo…… -
Java – I can kill or complete () an activity in a thread other than a thread?
I wonder if it is possible to create a thread and kill / complete the activity, if so, how can it not work in the doin…… -
Java – resource leak: ‘in’ has never been closed, even though it is closed
I know there are several similar problems here, but most people have forgotten to put a close () instruction in their …… -
Java – ThreadPoolExecutor: how does it reuse threads
I read about ThreadPoolExecutor wired process pool, which is destined to reduce the cost of creating new threads (at l…… -
Java – what is a good combination of tools currently used to implement rest / J2EE / database custom authentication
I just want to know what is the good combination of tools / frameworks / libraries for implementing rest API on J2EE a…… -
Java – MapReduce / Hadoop getting started
Recently, I have read a lot of information about MapReduce / Hadoop and think this is where the industry is turning Ca…… -
How to create an OAuth request using Java?
I need to use OAuth to connect with viago website Referring to their documentation, I need to create a request similar…… -
In Java, there is no two – to – long conversion
I need to convert double to long and keep its binary structure instead of numeric value Just change the type, but keep…… -
Java – JPanel does not use SetSize and setprefferedsize
Please explain why it doesn't work. You can also publish a solution to solve this problem Thank you very much for your…… -
Java – deploy jax-ws web services on Tomcat
Note that Java 6 contains javax xml. WS, I can create a stand - alone web service Solution Download the subway from he…… -
Java – JDBC uses select for update to lock a row, which does not work
I have a select problem with MySQL For update, this is the query I tried to run: SELECT * FROM tableName WHERE HostNam…… -
Java – hibernate subquery
I have a problem creating subqueries using hibernate Unfortunately, the subqueries class has almost no documentation a…… -
Java – why does the spring task scheduler wait for the last task to complete?
I have the following task scheduler settings: <bean id="Task" class="foo.bar.Task" /> <bean id="TaskSchedule…… -
How do I unit test the javanica @ hystrixcommand annotation method?
I am using javanica and commenting on my hystrix command method, as follows: @HystrixCommand(groupKey="MY_GROUP",comma…… -
Java – GWT and enumeration issues
I have an enumeration in the client of the GWT application. When I try to run it, I receive an exception related to se…… -
UTF-8 encodes Java strings into properties
I have a single UTF - 8 encoded string, which is a series of key - value pairs that need to be loaded into the propert…… -
Java – @ size, @ length and @ column (length = value)
What is the difference between the validation check of the following three fields? @Entity public class MyEntity { …… -
What Java data type corresponds to Oracle SQL data type numeric?
Oracle jdbc driver assigns Java data type to Oracle SQL data type numeric? Does this vary with the size of the numeric…… -
The Java implementation of producer consumer throws Java lang.IllegalMonitorStateException
import java.util.LinkedList; import java.util.LinkedList; import java.util.Queue; class Producer extends PubSub imple…… -
javax. imageio. Is imageio broken? It rotates some images
Below you will see a delicious cake "simit" from Turkey It's taken from the iPad 2, so it's a JPEG with a size of 720 …… -
Java – spring data repositories – find the where field in the list
I am trying to use spring pagingandsortingrepository and find myentity, where the fields in fieldvalues are queried as…… -
JavaFX bean binding suddenly stops working
I use JavaFX numberbindings to calculate certain values At first, everything worked as expected However, after a fairl…… -
Java – how to access enum field in playframework template
I have an enum, which has some fields that I need in play1 2.4 access in template public Enum WORKER{ FARMER,SMITH,…… -
Java BigDecimal triangulation
I am developing a mathematical parser that can evaluate strings, such as' 5 b * sqrt (C ^ 2) ' I am using ANTLR for pa…… -
Java – how to add support for resizing when using an undecorated JFrame?
I want to customize my title bar, minimize, maximize and close buttons So I use setundecorated (true); On my JFrame, b…… -
What is jar signing in Java?
What is a jar signature? Can we customize it? I mean, have your own signature Solution Jar signature is the process of…… -
Java – use the stream to find objects in the list
See the English answer > why filter () after flatmap () is "not completely" lazy in Java streams? 6 // returns [i,j……