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Java video processing library

I want to extract frames from video and apply some filters on them, such as Gabor / Hough, etc Which Java library is p……

Java

2020-01-30

Java recoverable hash calculation

I want to realize the recoverable instant hash generation of some files uploaded on the server The file is very large,……

Java

2020-01-30

com. sun. JNA and net java. What is the difference between dev.jna?

I'm looking at the central Maven repository and looking at net java. Dev.jna and com sun. jna groupId for JNA. JNA's G……

Java

2020-01-30

Migrate Jersey project to work in Jersey repackaged. org. objectweb. asm. Java. In classreader Java 10 result used in lang.illegalargumentexception

Previous projects run well on Tomcat 8 and JDK 8, but when I migrate my projects on Tomcat 9 and JDK 10, it gives the ……

Java

2020-01-30

Java – the key in treemap returns null

So I have a very strange mistake When I first used keyset () to iterate over the first 10 keys of a large treemap, I s……

Java

2020-01-30

How to use java8 lambda expressions to throw exceptions for custom checks?

See English answers > java 8: lambda streams, filter by method with exception 13 private static void readStreamWith……

Java

2020-01-30

Criteria – multiple expressions in the JPA querybuilder where clause do not work

I'm using javax persistence. criteria. Criteriabuilder encountered a problem creating the query I am using eclipse lin……

Java

2020-01-30

ADO. Optimistic concurrency in net Entity Framework

I found that an MSDN article describes how EF handles concurrency when saving changes: I have two questions: >There……

Java

2020-01-30

Java – you cannot use expressions to increment byte values, but use the increment operator

See English answers > why byte + = 1 compile, but byte = byte + 1 not? 8 byte i=0; i++; The following is invalid by……

Java

2020-01-30

Java – why Catalina home_ IS_ The undefined directory is generated by logback in the same project directory?

I wrote the logback configuration file for my application, but when I was doing Maven clean install (MVN clean install……

Java

2020-01-30

Java – set the list parameter to native query

I want to set the parameter to local query, javax.persistence.EntityManager.createNativeQuery Such a thing @ h_ 419_ 5……

Java

2020-01-30

Openid architecture for Java

I try to understand the concept and benefits of implementing openid in the project Moreover, since I am a java develop……

Java

2020-01-30

Is the Java – quartz scheduler no longer applicable to spring since version 3.0?

Spring's internal scheduling function starts with spring 3, including support for cron type expressions, which is very……

Java

2020-01-30

Java – base64encoder is an internal API and may be removed in future versions

See the English answer > how to avoid warning for the base 64? 2 code: public static String Encrypt(String Data) th……

Java

2020-01-30

Java – why does overridepending transition not take effect when jumping from fragment to new activity?

The first activity contains a clip with a button inside. When I click this button, I want to jump to a new activity wi……

Java

2020-01-30

Java keystore and password settings

I have the following problems on Java keystores and keytool I assume that the keystore may have multiple certificates ……

Java

2020-01-30

Java – Canny’s algorithm: lag error function

I'm writing Canny's algorithm. I seem to have a lag problem The threshold seems to be working, but my lag doesn't seem……

Java

2020-01-30

Model view controller – questions about Java EE 6 architecture

>From the above figure, I can conclude that Java EE 6 architecture is a 3-tier architecture What I don't understand……

Java

2020-01-30

Java – why should you try to throw an unchecked exception on a checked exception?

See English answers > the case against checked exceptions 32 If I have this method title, two exceptions will be th……

Java

2020-01-30

Java – ActiveMQ oom with stomp enabled

After enabling the stomp protocol on the ActiveMQ server (before it only enables the default protocol), it starts to f……

Java

2020-01-30

Java – Jenkins build fails with svnexception

I'm trying to run Jenkins build Here is my configuration Jenkins version: 1.445 deployment: as war Java: 1.7 (server 6……

Java

2020-01-30

Nutch: using java calls instead of the command line?

Am I thick or really unable to programmatically call Apache nutch through some java code? Where are the documents (or ……

Java

2020-01-30

Java 9 repl for running applications

Java 9 introduced repl. Exe called jshell in the JDK distribution Is there any way to connect to the jshell of the JDK……

Java

2020-01-30

Java – what is the default temporaltype for temporal mapping keys without @ mapkeycolumn or @ mapkeytemporary annotations?

I am creating a JPA 2.0 annotation compliance kit for my internship I know that when you use @ mapkeycolumn to define ……

Java

2020-01-30

Java – best practice for testing indexof return values

What do you usually write when testing the return value of indexof? if str.indexOf("a") < 0 VS if str.indexOf("a") ……

Java

2020-01-30

java. Lang. IllegalStateException: assetmanager completed

I went to bed yesterday while my application was working, and today I couldn't start when I tried to run it Once I try……

Java

2020-01-30

Does Sun’s hotspot JIT compiler automatically apply “final” to Java local variables?

I've heard of this, but I can't find a definite online resource to confirm it Background: a colleague likes to make hi……

Java

2020-01-30

Java: read the image and display it as imageicon

I'm writing an application that reads and displays images with imageicons (in jlabel). The application needs to be abl……

Java

2020-01-30

Java – how do I run the play framework 2.1 project in IntelliJ?

I have an existing play 2.1 project I've been running it on the console and it works normally However, when I try to r……

Java

2020-01-30

Java – HttpServletRequest #getremoteaddr() returns null

Why HttpServletRequest Getremoteaddr() sometimes returns null? For about 2 identical requests, null is returned for no……

Java

2020-01-30

Java – spring boot remote shell custom command

I tried to add a new custom command to the spring boot remote shell, but failed http://docs.spring.io/spring-boot/docs……

Java

2020-01-30

Java – how to use yaml attribute and constructor injection in spring boot?

I know it should be a piece of cake, but I just didn't get anywhere In my spring boot application, in application In t……

Java

2020-01-30

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Java video processing library

Java recoverable hash calculation

com. sun. JNA and net java. What is the difference between dev.jna?

Migrate Jersey project to work in Jersey repackaged. org. objectweb. asm. Java. In classreader Java 10 result used in lang.illegalargumentexception

Java – the key in treemap returns null

How to use java8 lambda expressions to throw exceptions for custom checks?

Criteria – multiple expressions in the JPA querybuilder where clause do not work

ADO. Optimistic concurrency in net Entity Framework

Java – you cannot use expressions to increment byte values, but use the increment operator

Java – why Catalina home_ IS_ The undefined directory is generated by logback in the same project directory?

Java – set the list parameter to native query

Openid architecture for Java

Is the Java – quartz scheduler no longer applicable to spring since version 3.0?

Java – base64encoder is an internal API and may be removed in future versions

Java – why does overridepending transition not take effect when jumping from fragment to new activity?

Java keystore and password settings

Java – Canny’s algorithm: lag error function

Model view controller – questions about Java EE 6 architecture

Java – why should you try to throw an unchecked exception on a checked exception?

Java – ActiveMQ oom with stomp enabled

Java – Jenkins build fails with svnexception

Nutch: using java calls instead of the command line?

Java 9 repl for running applications

Java – what is the default temporaltype for temporal mapping keys without @ mapkeycolumn or @ mapkeytemporary annotations?

Java – best practice for testing indexof return values

java. Lang. IllegalStateException: assetmanager completed

Does Sun’s hotspot JIT compiler automatically apply “final” to Java local variables?

Java: read the image and display it as imageicon

Java – how do I run the play framework 2.1 project in IntelliJ?

Java – HttpServletRequest #getremoteaddr() returns null

Java – spring boot remote shell custom command

Java – how to use yaml attribute and constructor injection in spring boot?

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