Java 归档 - Page 348 of 655

Java – when the difference between methods is a parameter subtype, null is passed to the overriding method

See English answer > which overload will get selected for null in Java? 3 Why does the virtual machine call this me……

Java

2020-01-23

Generate UML from Java source

Because I have a big project, I have to generate UML for it Writing UML for 300 classes is excessive So is there any s……

Java

2020-01-23

Java – exception thrown when connecting to JMX server in spring!

So when I try to connect to JMX from jconsole, I get this exception: Caused by: java.rmi.ConnectException: Connection ……

Java

2020-01-23

Java – in memory scanning of files, ideally using ClamAV

We are implementing an enterprise application that focuses on security, including uploading files These files need vir……

Java

2020-01-23

Java – WebSockets with multiple data in onmessage annotation

I'm using WebSockets I want to use multiple @ onmessage overloaded methods with different data types @OnMessage public……

Java

2020-01-23

Java scriptengine: use values on the Java side?

In the Java program, I am calling a user-defined JavaScript program: File userJSFile=...; javax.script.ScriptEngineMan……

Java

2020-01-23

Java – spring security displays “bad credentials” even before submitting the form

I have the following spring safety code, but it doesn't work When I open the login page and enter the user name / pass……

Java

2020-01-23

Java – how to terminate matcher Find() when it runs too long?

I want to know the technology of terminating long-running regular expression matching (Java matcher. Find () method) M……

Java

2020-01-23

Java – add jdbc driver to classpath

OK, I set up my Maven correctly on win vista_ HOME,JAVA_ HOME. But I don't have a course path yet I also installed mys……

Java

2020-01-23

Java compiler of JDK 1.6: how to write class bytes directly into byte [] array?

So I recently learned about the new Java compiler API provided in JDK 1.6 This allows string to be compiled directly f……

Java

2020-01-23

Java – getting, (#803) there is no error in some aliases you requested

When I try to get data from Facebook using the graphics API, I get this error, {"error": {"message":"(#803) Some of th……

Java

2020-01-23

Java – libgdx: how to animate on an isometric tile map?

I have some questions about libgdx and Pingpu map I can use isometric tiled maprenderer as a renderer and orthographic……

Java

2020-01-23

Java – bit strings: check whether one bitstring is a subset of another

I represent this group of English letters as a 26 bit string The first bit corresponds to 'a', the setting bit corresp……

Java

2020-01-23

Java – how do I check if a byte array is empty?

I am using the following code to get the uploaded file @POST @Path("update") @Consumes(MediaType.WILDCARD) ……

Java

2020-01-23

Java – how to ignore attributes with null values during deserialization from JSON

I am trying to deserialize a JSON string into a concurrenthashmap object, and I receive an error because my JSON conta……

Java

2020-01-23

Random enumeration of hash tables in Ocaml

Sorry, it's a long question I decided to explain the background of the problem first, because my problem may have othe……

Java

2020-01-23

Java – can regular expressions be used for jetty’s servlet mapping?

I have this mapping <servlet-mapping> <servlet-name>service</servlet-name> <url-pattern>/servi……

Java

2020-01-23

How to use the system Use multiple scanner objects on in?

What is the correct way to use multiple scanner objects in my program For example, I use a scanner to read a file, and……

Java

2020-01-23

What is the most valuable Java object database?

The most valuable Java object databases are: >Easy to use: one line of code stores any object. > Effective memor……

Java

2020-01-23

Java – the eclipse debugger “skips” important code

I have a strange problem debugging Android applications // Get the puzzles from cache List<PuzzleDetails> newPuz……

Java

2020-01-23

Java – activate SQL statements using hibernate and spring data JPA

I have a spring data JPA repository that uses hibernate as a provider I want to record SQL statements, but I can't I'v……

Java

2020-01-23

Java – how to calculate an average using mongodb and numberlong

I tried to use the mongodb Java driver to calculate the average value of the collection, as follows: DBObject conditio……

Java

2020-01-23

Java – how to create gradle sharedmanifest for multiple projects?

I have several Java projects These projects use gradle to create jar, war, and ear files In each project, I use manife……

Java

2020-01-23

Prime factorization of Java display numbers

Therefore, for my task, I must write a program that requires the user to input an integer, and then print out the prim……

Java

2020-01-23

How do I store and reuse key pairs in Java?

I want to generate the key pair once and reuse it public static KeyPair generateKeyPair() throws Exception { K……

Java

2020-01-22

Java – how to use a custom runner when using categories in JUnit?

I have a bunch of JUnit tests that extend my basic test class basetest, which in turn extends assert Some of my tests ……

Java

2020-01-22

Java – in IntelliJ, why should I clean up and build wars to see changes when I run Google App Engine locally?

I'm using the Google application engine to build wars, and I notice that whenever I make local changes, I don't apply ……

Java

2020-01-22

Java – spring boot jsr-303 / 349 configuration

In my spring boot 1.5 In the application, I am trying to configure support for JSR - 303 / JSR - 349 authentication I ……

Java

2020-01-22

Java – spring utilities cannot be resolved

I'm trying to use one of the Oracle GUI examples of spring utilities But eclipse gave me errors and could not resolve ……

Java

2020-01-22

Test – guava ticker cache expired

Google guava tutorial says cache expiration can be tested with ticker According to my understanding, I can use it to f……

Java

2020-01-22

Java – in Hadoop map reduce, will any class see the entire key list after sorting and before partitioning?

I'm using Hadoop to analyze very uneven data distribution Some keys have thousands of values, but most have only one F……

Java

2020-01-22

Build a process pipeline using processbuilder in Java 7

I've been trying to figure out how to manage some processes in Java using the new process builder I can't find a suita……

Java

2020-01-22

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Java – when the difference between methods is a parameter subtype, null is passed to the overriding method

Generate UML from Java source

Java – exception thrown when connecting to JMX server in spring!

Java – in memory scanning of files, ideally using ClamAV

Java – WebSockets with multiple data in onmessage annotation

Java scriptengine: use values on the Java side?

Java – spring security displays “bad credentials” even before submitting the form

Java – how to terminate matcher Find() when it runs too long?

Java – add jdbc driver to classpath

Java compiler of JDK 1.6: how to write class bytes directly into byte [] array?

Java – getting, (#803) there is no error in some aliases you requested

Java – libgdx: how to animate on an isometric tile map?

Java – bit strings: check whether one bitstring is a subset of another

Java – how do I check if a byte array is empty?

Java – how to ignore attributes with null values during deserialization from JSON

Random enumeration of hash tables in Ocaml

Java – can regular expressions be used for jetty’s servlet mapping?

How to use the system Use multiple scanner objects on in?

What is the most valuable Java object database?

Java – the eclipse debugger “skips” important code

Java – activate SQL statements using hibernate and spring data JPA

Java – how to calculate an average using mongodb and numberlong

Java – how to create gradle sharedmanifest for multiple projects?

Prime factorization of Java display numbers

How do I store and reuse key pairs in Java?

Java – how to use a custom runner when using categories in JUnit?

Java – in IntelliJ, why should I clean up and build wars to see changes when I run Google App Engine locally?

Java – spring boot jsr-303 / 349 configuration

Java – spring utilities cannot be resolved

Test – guava ticker cache expired

Java – in Hadoop map reduce, will any class see the entire key list after sorting and before partitioning?

Build a process pipeline using processbuilder in Java 7

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