Recent questions tagged Java

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java - Java8, how discover the class and method name in visitMethodInvocation?

With Java7 and Java8, I would like to generate a warning if some methods was called. The warning will be print if ... ? Or how to approach 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 - Converting String from One Charset to Another

I am working on converting a string from one charset to another and read many example on it and finally found below ... forName("US-ASCII")))); 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 - Regex to replace a string not within quotes (single or double)

I have a input string this or "that or" or 'this or that' that should be translated to this || "that or" | ... reuse it when I get this to work. 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 - Tomcat context.xml files, is there a hierarchy?

I am trying to use symbolic links in one of the applications I have running on Tomcat5. Thanks to some ... symbolic links in myapplication 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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java - Android Button Doesn't Respond After Animation

I have a basic animation of a button after it is pressed currently in my application. After the button ... generate.setAnimation(animation); } 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 - Confused by Java8 Collectors.toMap

I have a collection that looks like below, and I want to filter out the everything except the dates that aren't the end ... .toMap(/* HUH? */)); 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 - In GoogleCloudMessaging API, how to handle the renewal or expiration of registration ID?

As the question says that How to find out when does the registration ID has become invalid in GoogleCloudMessaging API ... of ID by Google? 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 - Share session data between 2 subdomains

I am using tomcat 7.0.6 with jdk 1.6.0_22 Is it possible to share session data between 2 different ... serve any servlets from mydomain.com 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 - Making datasource in Glassfish

I am creating a JDBC connection pool resource for GlassFish, using the server's Admin Console. One of the fields on ... the drop-down as well. 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 - DBCP returns closed connections

We are seeing situations where our database connection from org.apache.commons.dbcp.BasicDataSource is dying ... .getConnection(); 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 - Cannot access HTTPS from Weblogic

I have a problem with Weblogic accessing an HTTPS server, I can access other HTTPS urls, like google or ... t complain about it. 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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291 views

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java - Compute hex color code for an arbitrary string

Heading Is there a way to map an arbitrary string to a HEX COLOR code. I tried to compute the HEX number for ... (programs[i].hashCode())); } 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 - Inserting links into RESTEasy XML results via JAXB

I want to insert links into XML via RESTeasy / JAXB. I tried to use the documentation for my code, but ... this still throws the same error. 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 declaring Mapper and Reducer classes as static?

This is likely showing my lack of Java understanding but I am wondering why in most MapReduce programs mapper and ... are declared as static? 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 security without form login

I have implemented Spring Security Expression in my application Spring controller: @Controller @RequestMapping("init") ... login form header See Question&Answers more detail:os...

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

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238 views

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java - Use of joinTransaction in JPA

The following code is from JPA specs. I could not understand why em.joinTransaction() is required in createLineItem(int ... em.close(); } } 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 - Specification/Predicate to Search Nested Objects

I'm using Spring Boot with Spring JPA and Specification Executor. I have my Specification/Predicate combo ... nested object? 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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376 views

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java - How to set a JFrame size to fit the CardLayout displayed JPanel?

I have a JFrame containing a set of JPanels in a CardLayout. Each JPanel has a different size and I want the ... ). How can I achieve 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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669 views

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java - Spring 3 and NTLM authentication

I am using a spring 3 web application, as Spring 3 doesn't support NTLM authentication, what are the ... help is highly appreciable. 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 - Spring Boot - Load multiple YAML files

I'm using Spring boot for my project and trying to load yaml files so that I can use the data in the files ... can use to load custom.yml files? 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 - Draw a String onto a ProgressBar, like JProgressBar?

I recently started working with JavaFX, and started making FX versions of my custom Swing components. One of ... much 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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395 views

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java - Checking Out Directory / File with SVNKit

I can't see on the wiki where checking out is documented. Ideally, I would like to check out a file "example/folder ... file. How do I 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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341 views

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java - JDBC - Statement, PreparedStatement, CallableStatement and caching

I am wondering what are the differences and when to use Statement, PreparedStatement, and CallableStatement. What is ... using each of these? 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 to configure spring boot mvc app for JSP?

I am new to Spring boot ( and servlet 3.0 ). I am trying to create spring mvc project with JSP as ... tutorial for Spring boot mvc with jsp. 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 - Exporting a SQLite database to an XML file in Android

I know this is possible but I'm not really sure where to start. Has anyone been able to achieve 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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380 views

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java - how to use onclicklistener for grid view

i used gridview to display numbers, so if i click on any number the next activity should start. i tried this code ... signal. PID: 341 SIG: 9 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 - Spring WebFlux Flux behavior with non streaming application/json

I am evaluating using Spring Webflux but we have to support clients that expect application/json, ... attached. Dropping: EmptyLastHttpContent See Question&Answers more detail:os...

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

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600 views

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java - Start H2 database programmatically

I'm coding a server-client application in Java and I need to implement a local database on the server side and ... 176] I followed this article. See Question&Answers more detail:os...

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

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