Java 归档 - Page 307 of 655

Java – improve protocol buffer performance

I'm writing an application that needs to quickly deserialize millions of messages from a single file The main function……

Java

2020-02-19

Java: get the class of the inherited class from the static method

I have the following problems in Java: class Base { static void foo() { // I want to get Derived class……

Java

2020-02-19

Java EE – inject CDI managed beans into custom Shiro authorizationrealm

In the application I'm building, we use direct Java 6 EE and JBoss (without spring, etc.), JPA / Hibernate, JSF, CDI a……

Java

2020-02-19

Unable to parse Java Lang.Object type – eclipse buildpath does not work properly

I encountered an eclipse problem on Mac OSX mountain lion I recently installed the Android SDK. In my java project, I ……

Java

2020-02-19

Java – incorrect MySQL date value: null

I'm trying to update a table from a Java application where a column may be null I tried several different methods, but……

Java

2020-02-19

Java – what is a component

I listen to podcast Java pose. There are often discussions about components here (note that components are not (clear)……

Java

2020-02-19

Java – spring JPA MVC – error creating bean

I developed a spring JPA project in eclipse to access the data stored in the MySQL server Now I need to import this pr……

Java

2020-02-19

The java compiler does not give all errors at once

System.out.println("First eror :: without semicolon ") // first Error System.out.println("First eror :: without semi……

Java

2020-02-19

Java – add code to package private library method

I have a library class that contains private methods Overriding this method directly through subclasses is not optiona……

Java

2020-02-19

Automatically increase the build number in the Java project

I am using a version system represented by abbuild, where a is the overall Version (the prototype is alpha, the beta v……

Java

2020-02-19

Java – use annotations for tracking

I've been using a company code base with a strategy to write a large number of tracking records Therefore, each method……

Java

2020-02-19

Java – Final fields and anonymous classes

I'm still not satisfied with the explanation of anonymous class and final field There are many questions trying to exp……

Java

2020-02-19

java – Hibernate Validator. How do I use @ valid annotation?

What is the purpose of placing the @ valid annotation at the method parameter level? public void (@Valid Person p) { .……

Java

2020-02-19

Java – the most efficient way to calculate query rows

I'm using hibernate to retrieve the number of rows for a particular query Suppose I have a table named 'person', which……

Java

2020-02-19

Java – why does ThreadPoolExecutor have BlockingQueue as a parameter?

I have tried to create and execute ThreadPoolExecutor int poolSize = 2; int maxPoolSize = 3; ArrayBlockingQueue<Run……

Java

2020-02-19

Java – maximum size when parsing XML using DOM

I am currently implementing a rest client that will parse XML response messages Later, it will run on Android devices ……

Java

2020-02-19

Java – Best ant tutorial / QuickStart?

Avoid learning ants for too long (IDE and copy and paste make simple tasks easier) I now see myself forced to take sha……

Java

2020-02-19

The Java decompiler has the saved line number of the actual physical location

Many ide debuggers match physical line numbers http://java.decompiler.free.fr/ Not one Solution I have released a supp……

Java

2020-02-19

Pyspark: exception: the Java gateway process exited before sending the driver’s port number

I tried to run pyspark. Com on my MacBook When I try to start it, I get an error: Exception: Java gateway process exit……

Java

2020-02-19

Java – use opencsv to write CSV to string without creating actual or temporary files

I'm trying to write CSV files using the opencsv library The limitation is that I don't want to create files or even te……

Java

2020-02-19

Where can I find the source code of Java arrays?

Where can I find the source code of Java array? Example: double[] arr=new double[20];@H_301_5@ 所有具有任何维度的数……

Java

2020-02-19

Java – include the contents of the JSP in the servlet

I have this servlet: public class SaveImage extends HttpServlet { protected void doGet(HttpServletRequest request……

Java

2020-02-19

java. Lang. IllegalStateException: neither bindingresult nor the common target object of bean name ‘category’ can be used as the request property

I checked almost all the answers related to this question on the Internet, but I couldn't find the problem in my code ……

Java

2020-02-19

Java – MySQL InnoDB pending table level lock

I have a large production network application (GlassFish 3.1 MySQL 5.5) All tables are InnoDB The application hangs co……

Java

2020-02-19

What does Java – HashMap check when calling containskey()?

ArrayList<Integer> lis = new ArrayList<Integer>(); ArrayList<Integer> lis = new ArrayList<Integer……

Java

2020-02-19

Java – unit testing: assertions don’t work?

I've been applying for unit test for some time. Today I met some very strange things Consider the following codes: Tes……

Java

2020-02-19

The JavaFX CSS style of textarea does not work

I'm writing a simple JavaFX application, but I can't use some CSS styles This is the relevant CSS: .text-area { -fx-……

Java

2020-02-19

Java – XPath: is there any way to set the default namespace for queries?

Is there any way to set Java XPath as the default namespace prefix? For example, instead of: / HTML: HTML / HTML: head……

Java

2020-02-19

Retrieving array values from mongodb using java

I have the following code: DBCollection collsc = db.getCollection("StudentCourses") ; BasicDBObject querysc = new Basi……

Java

2020-02-19

Java – how to get the response body in zuul post filter?

How to read the response body when zuul is used as a proxy in the post filter? I try to call the code like this: @Comp……

Java

2020-02-19

Java – getgeneratedkeys() in Preparedstatement After executebatch()

I want to insert a few lines using Preparedstatement: ps = con.prepareStatement(query,PreparedStatement.RETURN_GENERAT……

Java

2020-02-19

Implementing type erasure of ArrayList in Java

I read this article on Java generics and mentioned that the constructor of ArrayList looks a bit like this: class Arra……

Java

2020-02-19

搜索内容

Java – improve protocol buffer performance

Java: get the class of the inherited class from the static method

Java EE – inject CDI managed beans into custom Shiro authorizationrealm

Unable to parse Java Lang.Object type – eclipse buildpath does not work properly

Java – incorrect MySQL date value: null

Java – what is a component

Java – spring JPA MVC – error creating bean

The java compiler does not give all errors at once

Java – add code to package private library method

Automatically increase the build number in the Java project

Java – use annotations for tracking

Java – Final fields and anonymous classes

java – Hibernate Validator. How do I use @ valid annotation?

Java – the most efficient way to calculate query rows

Java – why does ThreadPoolExecutor have BlockingQueue as a parameter?

Java – maximum size when parsing XML using DOM

Java – Best ant tutorial / QuickStart?

The Java decompiler has the saved line number of the actual physical location

Pyspark: exception: the Java gateway process exited before sending the driver’s port number

Java – use opencsv to write CSV to string without creating actual or temporary files

Where can I find the source code of Java arrays?

Java – include the contents of the JSP in the servlet

java. Lang. IllegalStateException: neither bindingresult nor the common target object of bean name ‘category’ can be used as the request property

Java – MySQL InnoDB pending table level lock

What does Java – HashMap check when calling containskey()?

Java – unit testing: assertions don’t work?

The JavaFX CSS style of textarea does not work

Java – XPath: is there any way to set the default namespace for queries?

Retrieving array values from mongodb using java

Java – how to get the response body in zuul post filter?

Java – getgeneratedkeys() in Preparedstatement After executebatch()

Implementing type erasure of ArrayList in Java

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