Java
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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…… -
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 – how to return specific types when implementing a common interface
I have an interface that will be implemented by several different classes, each using different types and return types…… -
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 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…… -
How to map lambda expressions in Java
I come from Python and try to understand how lambda expressions work in Java In Python, you can do the following: opdi…… -
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 – 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…… -
Warning: jsf1074: a managed bean named “bean” has been registered
I'm using mojarra JSF 2.2 The bean we define is based on anonation, for example @ManagedBean(name = "codeBean") @ViewS…… -
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…… -
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…… -
How to automatically improve debugging in symfony2
I tried to debug using symfony2 before, and dealing with cache is a great pain Solution I'm on the app_ This code (bas…… -
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 – 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…… -
Implementation of counting using group in Java 8
I am looking for the implementation of group by, and then filter it according to the count in the lambda expression se…… -
Java – hibernate subquery
I have a problem creating subqueries using hibernate Unfortunately, the subqueries class has almost no documentation a…… -
Java hash map thread visibility
I fully loaded a Java HashMap during initialization, but after initializing multiple threads, the HashMap will read th…… -
How to use Java driver to execute full-text search commands in mongodb?
Mongo and Java masters Our team decided to use the full-text search API recently introduced in mongodb However, we fin…… -
Java – how Web services work
I am new to web services. I want to use java to implement web services in my eclipse project So anyone can tell me how…… -
java – Hadoop Map Reduce For Google web graph
We have given the task of creating a map reduce function as a task. This function will output the nodes you can start …… -
Java – Oracle jdbc driver statement cache and bonecp statement cache?
I am using the Oracle jdbc driver and evaluating bonecp I asked myself if I should use one or another for statement ca…… -
Create variable names using loops in Java?
The first poster, long time readers, so be gentle to me:) Refer to the following code, which is used to generate time …… -
Java – when to @ requestparam and @ pathvariable
Just want to know in which case we should select @ requestparam and @ pathvariable I Know: >@ requestparam takes th…… -
Java – round to 2 decimal places
(Math.round(doubleValue*100))/100.0 (Math.round(doubleValue*100))/100.0 Is there a better way to round the decimal to …… -
Java – what is imageobserver?
When you draw an image, you need an image observer New comments new new new flag new new new flag new new flag new fla…… -
Java – Lucene index problem with “–” character
I came across a Lucene index that indexes words with "–" characters It applies to some words that contain "–" but not …… -
JPA: what is the behavior of merging with lazy initialization sets?
The following is the sequence that caused the problem: >I have a team record and 3 player records in the database T…… -
Java – sort double values in JTable
I found many problems related to this, but I didn't find a simple way to solve my problem I can't find a way to make m…… -
Threshold image using OpenCV (Java)
I'm working on a project with OpenCV I need to convert the following image to a threshold image I tried this function:…… -
Java – how to comment that all lines contain some text in eclipse
I'm using eclipse to cook Java Now, when I want to comment on all lines containing specific text / variables, I have e…… -
Java XML schema validation: prefix unbound
I have followed this tutorial to validate XML files However, an exception was received while validating the XML file W……