Java 归档 - Page 338 of 655

Java – someone can explain spring security basepermission Create?

I'm developing a project involving spring security ACL, and I encountered creating permission basepermission CREATE. S……

Java

2020-01-30

Java – hibernate 5: generator class = “sequence” does not work properly

I have the following mappings: <id name="id" type="java.lang.Long" column="id"> <generator class="seq……

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

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

Java – iterator of wildcard type variables with upper bound

Hello, I'm trying to extend HashMap < string, string > to enforce the "all lowercase" rule public class HttpQuer……

Java

2020-01-30

How to convert vectors in 1 row table in R

In R, I have a 1 - row table How do I convert it to a vector? Specifically, the table is as follows: 0 1 2 3 4 21……

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

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

Java – create only one object for the class and reuse the same object

I want to create only one object of a class and reuse the same object over and over again How can I do this? Solution ……

Java

2020-01-30

Java – change fonts of different lines in jtextarea

I want to add different font lines in jtextarea, but the last font seems to overwrite another font Please help import ……

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

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

Java – if there is no code: is it just an intellectual challenge or is it useful?

A friend of mine is discussing these design techniques for object state transformation (he is a Java master, by the wa……

Java

2020-01-30

Java – is it valid to get the logger from the static final variable initializer?

We have many class codes, and they have some templates as follows: private static Logger logger = null; private stati……

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

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

Emacs – Tuareg mode and CAML mode

I am currently using Tuareg mode, but I hope to be able to use the function of cam mode In particular, I want to be ab……

Java

2020-01-30

Java – how to ignore checkstyles on methods based on specific patterns

Does the checkstyle rule methodlength have a way to set the mode for the method to be ignored? I want to disable the c……

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

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

Java – calculates the nth floating point number

Using 32-bit floating-point numbers, I think there are floating-point numbers like 2 ^ 31 – 1 In Java, you can use an ……

Java

2020-01-30

Implementation of observable pattern in Java

I am currently using the observer / observable pattern of Java. I want to know: In this way, if we want, we can use cl……

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 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

Multithreading – Perl asynchronous task for “any” code, no matter what it is?

I have been writing a "Checker" system to perform various "checks" on various services, systems, databases, files, etc……

Java

2020-01-30

Java EE 6: how to call a stateful session bean from a stateless session bean?

I have a stateful session bean (SFSB), which acts as an authentication module In SFSB, I store the currently logged in……

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

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 – how do I scale fonts on a high resolution screen?

On the high resolution screen (my example, windows 8.1) is my java application In particular, the menu is so small tha……

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

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

New constructor in xxxsummarystatistics java-10

I see that java-10 adds a constructor for intsummarystatistics (long summarystatistics and double summarystatistics), ……

Java

2020-01-30

搜索内容

Java – someone can explain spring security basepermission Create?

Java – hibernate 5: generator class = “sequence” does not work properly

Java 9 repl for running applications

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

Java – iterator of wildcard type variables with upper bound

How to convert vectors in 1 row table in R

Nutch: using java calls instead of the command line?

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

Java – create only one object for the class and reuse the same object

Java – change fonts of different lines in jtextarea

Java – Jenkins build fails with svnexception

Java – the key in treemap returns null

Java – if there is no code: is it just an intellectual challenge or is it useful?

Java – is it valid to get the logger from the static final variable initializer?

Java – ActiveMQ oom with stomp enabled

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

Emacs – Tuareg mode and CAML mode

Java – how to ignore checkstyles on methods based on specific patterns

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

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

Java – calculates the nth floating point number

Implementation of observable pattern in Java

Model view controller – questions about Java EE 6 architecture

Java recoverable hash calculation

Multithreading – Perl asynchronous task for “any” code, no matter what it is?

Java EE 6: how to call a stateful session bean from a stateless session bean?

Java – Canny’s algorithm: lag error function

Java video processing library

Java – how do I scale fonts on a high resolution screen?

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

Java keystore and password settings

New constructor in xxxsummarystatistics java-10

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