Recent questions tagged Java

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java - How to run Jetty with SPDY using ALPN?

I have returned to JDK8 with Jetty and SPDY and I see that now Jetty 9.2 supports ALPN protocol instead of ... or I have done something 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 - Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 (little edit)

what I am having here is a web service that gives me the following JSON code : [ { "_OrderDetails": [ { " ... please what am I 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 - Was asynchronous jobs removed from the Play framework? What is a better alternative?

I wanted to use Job so I can kick them off on the start of application. Now it seems like it has been ... belong here. At least something... 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 add icons to items in a navigation drawer

I would like to have icons next to my items in my navigation drawer that I have set up like ... "?android:attr/listPreferredItemHeightSmall"/> 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 - Use var in field declaration

So starting in Java 9, we can use var to declare local variables: var s = "cool"; is there a way to use a ... seem like it from what I can tell. See Question&Answers more detail:os...

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

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359 views

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java - Mask urls in JSP

Related to this question: URL characters replacement in JSP with UrlRewrite I want to have masked URLs in this JSP ... . Servlets did the job. 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 find type without using instanceof?

I have a List of interface type Criteria within my class Query. List<Criteria> criteria = new ArrayList<Criteria>() ... this the only/best way? 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 - JavaFX InvocationTargetException

I have the code: package core; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx. ... projects. 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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java - Why doesn't h:dataTable inside ui:repeat get correct ID?

Code: <ui:repeat var="obj" value="#{demo2Bean.someList}"> <h:panelGroup id="foo" /> <h:dataTable id="bar" /> ... 'j_idt55:1:foo'. Why is it so? 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 can you get the calling ip address on an ejb call?

If a java client calls a remote EJB on a different server, how can you get the client IP address? Note that it is ... EJB2 call on JBoss 4.2.2 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 add an xjc plugin programmatically at runtime?

I'm generating JAXB classes from an xsd at runtime using XJC. But by default the maxLength restriction in the xsd ... ; What am I 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 - How to get generic's class

Class Model<T>{ private T t; ..... private void someMethod(){ //now t is null Class c = t.getClass(); ... my instance is null? Is it possible? See Question&Answers more detail:os...

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

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466 views

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java - adding n number of zeros after decimal

I need to give accuracy of a number entered by user till few digit. like if user enter some random value and ... . Any help will be appreciated. See Question&Answers more detail:os...

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

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924 views

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java - Run TOR browser with Selenium WebDriver

Im currently trying to execute TOR 6.0.4 with Selenium WebDriver (JAVA) 2.53 and Firefox 43 ... BernhardtDesktopTor BrowserStart Tor Browser.exe See Question&Answers more detail:os...

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

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910 views

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java - How to display a local image via adb shell

I am trying to display a local image on my Samsung Note 3 via adb shell. $adb shell am start -a android ... help me, really appreciate for 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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334 views

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java - How to assign <s:property value="a"> value to a jsp variable

Can anybody tell how to assign a value coming from "<s:property value="a">" into jsp variable ? 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 - Exception in JPA when using seed file for PostgreSQL

I am using Spring Boot 2 with JPA, and I leave it to Hibernate to create my database from my entities, which ... but that didn't work either. See Question&Answers more detail:os...

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

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363 views

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java - How can I configure HTTP Response Headers in a Struts2 Interceptor?

We currently have a java web application in the middle of migration from Struts 1 to Struts 2. We would like ... response headers in this way? See Question&Answers more detail:os...

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

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334 views

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java - What is the purpose of generics before return type

For example, in the following code public void inspect(U u){ // Some method } what is ... comes just before the return type See Question&Answers more detail:os...

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

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394 views

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java - JAXB take all content of element (both tags and text)

I have an XML of a forml like this: <content>TextText</content> How can I map with JAXB annotations ... "TextText"? See Question&Answers more detail:os...

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

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550 views

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java - How to simulate constructor race conditions?

I am reading "Java Concurrency in practice" and looking at the example code on page 51. This states that if a thread has ... f*cked"); } } } } 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 testing and maven

I'm trying to test my Spring web app but i have some problems. I added a test class in my maven ... clean install tomcat7:run-war-only') See Question&Answers more detail:os...

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

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337 views

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java - Comparing the contents of 2 excel files

I have 2 excel files and i wanted to compare the contents and highlight the differences. For example: first file... ... the best way 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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436 views

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java - JPEGImageEncoder don't work in JDK 7

I try to make captcha using JCaptcha Component and i need to encode image in related servlet. So ... .SC_INTERNAL_SERVER_ERROR); return; } See Question&Answers more detail:os...

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

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582 views

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java - How to Reference Local XSD File By Relative Path

This is a follow up on How to Configure Eclipse to Work with `ehcache` and there is an example of absolute ... /resources/ehcache-spring-1.2.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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649 views

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java - JasperReport setParameter() Deprecated?

I have recently upgraded the Jasper Reports library for my project, from 3.7.6 to 6.0.0. I can ... together to achieve the desired output. See Question&Answers more detail:os...

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

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444 views

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java - commit changes in try-catch inside @Transactional

Consider I have a method doing some stuff and logging mechanism in ActiveRecord pattern style: @Transactional public void doSmt( ... }.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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509 views

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java - Multitenancy with Spring JPA

I am looking around for a multitenancy solution for my web application. I would like to implement a application with ... it is a good solution? See Question&Answers more detail:os...

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

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