Recent questions tagged Java

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java - SSLHandshakeException with jlink created runtime

I've got a dropwizard app, which runs fine with the standard JRE. I've tried creating a runtime using jlink ... being left out by jlink? 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 - Android studio: debug application on device

I have difficulties with with debugging at Android Studio. After trying to launch application in debug mode device show ... I'm doing wrong? 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 - Spring SimpleFormController in 3.0

i notice that this controller has now been deprecated in the latest spring and was wondering what the alternative controller is? 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 - ant junit task does not report detail

I tried to write an ant with JUnit test, but get below result: unittest: [junit] Running com.mytest. ... can not troubleshoot my questions? 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 - Spring MVC @Path variable with { } braces

Am developing an application using spring boot. In REST controller i prefer to use path variable(@PathVariabale ... in controller {john} 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 - Optional Spring bean references

In my application I am using ContextLoaderListener to load context files from many jars using: <context-param ... handling dynamic references? 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 - Using PdfBox, how do I retrieve contents of PDDocument as a byte array?

I am currently using PdfBox as the driver for a pdf-file editor application. I need the contents of the PdfBox ... anyone know how to do this? 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 - Class.forName() throws ClassNotFoundException

A Thinking in Java program is as follows: package typeinfo; import static util.Print.*; class Candy { static { ... the Gum class, as expected? 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 do I manually invoke an Action in swing?

For the life of me I cannot seem to find details on Java Swing Actions :'( When I came across them I immediately ... . Now how do I run 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 - Round a double to 3 significant figures

Does anybody know how I can round a double value to 3 significant figures like the examples on this ... purplemath.com/modules/rounding2.htm 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 vector to arraylist

Is there any way to copy or convert a vector to arraylist in Java? 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 - Return a value AND throw an exception?

I'm working with an API that claims to return true if it succeeds, and false if it fails. But, it also ... return false and throw an exception? 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 - Increase memory of tomcat7 maven plugin?

I want to start an embedded tomcat7 instance directly from maven using the tomcat7-maven-plugin. This is working fine, ... ideas how to do that? See Question&Answers more detail:os...

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

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199 views

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java - Insert Dimensions to complete Expression/ReferenceType

I'm a newbie to Java. I have provided a short snippet from my code for BFS. public int bfs(Person p, ... . I would appreciate any input/advice! 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 - Float.NaN == Float.NaN

Why does this comparison give me 'false'? I looked at the source and Float.NaN is defined as /** * A ... think that NaN is equal to itself! 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 - Is it possible to ignore an exception?

In Java, is it possible to make a method that has a throws statement to be not checked. For example: public class ... I don't want to } } See Question&Answers more detail:os...

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

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388 views

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java - local variables referenced from a lambda expression must be final or effectively final

I have a JavaFX 8 program (for JavaFXPorts cross platfrom) pretty much framed to do what I want but came ... must be final or effectively final See Question&Answers more detail:os...

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

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441 views

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java - Android soft keyboard resize layout

When the virtual keyboard opens, it resizes my layout. How can i made for put the keyboard on my layout? And what it doesn't re-size my layout? See Question&Answers more detail:os...

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

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150 views

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java - How to export an Android Studio project as a zip file?

How do I export a project in ZIP format in Android Studio? I have always worked with Eclipse that has this feature. See Question&Answers more detail:os...

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

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148 views

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java - how can I make a page break using itext

I want to generate a pdf using itext. I would at some point while the content was added to make a page break ... on separate pages. Any ideas??? See Question&Answers more detail:os...

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

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368 views

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java - Can't add an image to a pdf using PDFBox

I'm writing a java app that creates a pdf from scratch using the pdfbox library. I need to place a jpg image in ... to put my image in the pdf? See Question&Answers more detail:os...

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

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208 views

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java - Process output from apache-commons exec

I am at my wits end here. I'm sure this is something simple and I most likely have huge holes in my ... .out.println(stdout.toString()); } See Question&Answers more detail:os...

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

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127 views

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java - Passing JUnit data between tests

I just discovered when creating some CRUD tests that you can't set data in one test and have it read in ... allowed to depend on each 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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411 views

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java - Jsoup select div having multiple classes

I am trying to select, using Jsoup, a <div> that has multiple classes: <div class="content-text ... perfectly with the aforementioned syntax. See Question&Answers more detail:os...

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

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284 views

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java - Is there any way to convert a Map to a JSON representation using Jackson without writing to a file?

I'm trying to use Jackson to convert a HashMap to a JSON representation. However, all the ways I've seen ... way to what I have implemented? 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 check whether an OutputStream is closed

Is there anyway to check whether an OutputStream is closed without attempting to write to it and catching the IOException ... 't closed */ with? See Question&Answers more detail:os...

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

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292 views

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java - How to make Jersey work with Dagger dependency injection?

Jersey normally uses HK2 dependency injection, but I would like to use Jersey with Dagger 2. Both Dagger and ... integrate Dagger with Jersey? See Question&Answers more detail:os...

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

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304 views

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java - Delete Email on Server using javax.mail

I am receiving emails from the server using the IMAP protocol like it is described here. This is working very fine ... so, please tell me how. See Question&Answers more detail:os...

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

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