Recent questions tagged Java

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Why should I sign my JAR files? I know that I need to sign my client-side JAR files (containing Applets) ... JARs would be appreciated - thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Execute function after 5 seconds in Android

I am new in android development and now my launcher activity show only 5 seconds and after that I want to check the user ... In", "True"); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Filtering Maven files into WEB-INF

I am trying to add some filtering to the application context file, which resides in the WEB-INF directory. I ... and have it referenced there. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - The JDK is missing and is required to run some NetBeans modules

Complete error message: The JDK is missing and is required to run some NetBeans modules Please use the --jdkhome ... -version javac 1.8.0_66 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Error: Unable to find @SpringBootConfiguration when doing @WebMvcTest for Spring Controller

I am testing my controller given below @Controller public class MasterController { @GetMapping("/") public String ... to fix this. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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351 views

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java - Maven dependency graph

Is there a way to have a Maven dependency graph of a given set of projects (if possible, graphical) ... the dependencies between those projects. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven "shaded" JAR is prefixed with "original" in the file name

I'm using the "shade" Maven2 plugin to build a monolithic JAR with all Java dependencies bundled together. The ... anyone ever seen this before? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Providing test data for SharedPreferences for Robolectric

Just started to use Robolectric and it seems to be pretty much what I need. However, I've hit a bit of a ... to figure out how to do it! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - IntelliJ IDE gives error when using Try-Catch with Resources

I am attempting to use JDK 7's "try-catch with resources" statement; IntelliJ highlights my resource line, saying ... that's even the issue). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the HTTP status return code for a successful DELETE statement in REST?

I am studying how to Spring handle REST web services (but I don't know if it is a Spring related ... the DELETE operation are gone succesfull? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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282 views

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java - Should Helper/Utility Classes be abstract?

I commonly find myself extracting common behavior out of classes into helper/utility classes that contain nothing but a ... Object arg0){ } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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136 views

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java - Add attributes to the model of all controllers in Spring 3

Every single view in my Spring 3 app has a set of attributes they can rely on. So the first line of every ... this if a redirect was returned? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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130 views

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java - Handling null values in protobuffers

I am working on something which fetches data from database and constructs protobuff message. Given the ... during protobuff construction?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

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java - Maven + Spring Boot: Found multiple occurrences of org.json.JSONObject on the class path:

When I run mvn test I get this warning. How can I fix it? Found multiple occurrences of org.json.JSONObject ... dependency> Apache Maven 3.5.3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to specify JPA 2.1 in persistence.xml?

A quick search on the Net reveals three or four variants how folks have been specifying xmlns and xsi: ... ns/persistence/persistence_2_1.xsd"> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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149 views

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java - Maven and dependent modules

Colleagues have been touting the wonders of maven and its magical dependency stuff but I'm finding that it fails ... go build A automatically. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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java - JCheckbox - ActionListener and ItemListener?

Both ActionListener and ItemListener are used to fire an event with JCheckBox? So, what's the difference between ... preferred to the other? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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313 views

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java - Error in Fragment: "Already managing a GoogleApiClient with id 0"

Everything works right the first time, if you launch a second time you see this error: FATAL EXCEPTION: main ... work. What am I missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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367 views

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java - DateTimeFormatter Support for Single Digit Day of Month and Month of Year

DateTimeFormmater doesn't seem to handle single digit day of the month: String format = "MM/dd/yyyy"; String date ... month and month of year? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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263 views

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java - Fastest way to check if a List<String> contains a unique String

Basically I have about 1,000,000 strings, for each request I have to check if a String belongs to the list ... the best method? ArrayList? Hash? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

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java - ProGuard: duplicate definition of library class?

I run my ProGuard for my Android project and get the following warnings: Note: duplicate definition of library class ... this lead to problems? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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293 views

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java - Spring Data JPA difference between findBy / findAllBy

Is there any difference when using Spring Data JPA keywords between: List<SomeEntity> findBySomeCondition(); ... > findAllBySomeCondition(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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231 views

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java - How to copy a directory using Ant

I have used copydir to copy a directory tree but it is deprecated. My directory contains some sub-directories, and ... I copy the entire tree? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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439 views

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java - How do you stop Console from popping up automatically in Eclipse

I have a web application running in Eclipse with Tomcat. It has a few errors that make the console popup every ... popping up and taking focus? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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java - "Cannot start compilation: the output path is not specified for module..."

I have a very simple Java + Gradle project. It builds fine. It runs fine from the shell with "gradle run". ... a normal gradle build and run. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

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java - Why doesn't String switch statement support a null case?

I am just wondering why the Java 7 switch statement does not support a null case and instead throws ... before every switch use. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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325 views

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java - Interface/enum listing standard mime-type constants

I am looking among the standard libraries (like apache commons, jax, jboss, javax) for an interface or enum that lists ... blah ... blah ... } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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203 views

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java - spring-boot - Which piece of code actually register dispatcher servlet for springMVC?

I am trying to find out in spring-boot, which implementation of WebApplicationInitializer actually register the ... serve specific url? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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