Recent questions tagged JAVA

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java - Android Studio 2.2 and Jack are getting blocked by Avira Antivirus

So I update my project to use the new jack compiler, but for some unknown reason my ... :UsersUserAppDataLocalTempjill-1475579265083-0.jack 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 - Method name interchange - public abstract or abstract public

I recently came across the following methods. I tried googling and did an example to see the difference by defining ... in the above 2 methods. 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 programmatically send ActionEvent to JButton?

How do I programmatically send an ActionEvent (eg button pressed/ACTION_PERFORMED) to a JButton? I know of: ... a little personal experiment. 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 - hibernate dialect for oracle 12c

I'm using hibernate in my spring mvc project and I want to connect to oracle 12c database. I used org.hibernate. ... 'm using hibernate 4.3.9. See Question&Answers more detail:os...

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

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java and python equivalent of php's foreach($array as $key => $value)

In php, one can handle a list of state names and their abbreviations with an associative array like this: <? ... is exactly what was required. 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 Data Elasticsearch: Multiple Index with same Document

I'm using spring-data-elasticsearch and for the beginning everything works fine. @Document( type = "products", ... ? Thanks a lot Marcel 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 - Htmlunit on Android application

Has anybody gotten HTMLUnit (or HtmlUnitDriver) to work on Android apps? This is the problem: I am getting the ... shed some light on 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 - Considering object encapsulation, should getters return an immutable property?

When a getter returns a property, such as returning a List of other related objects, should that list and it' ... class for each mutable class? 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 - Add XML comments into marshaled file

I'm marshaling objects into an XML file. How can I add comments into that XML file? 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 prevent Eclipse from auto-importing packages when pasting code?

Frequently I copy and paste code from my existing code base. Eclipse frequently brings in erroneous import ... Eclipse, using Eclipse. 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 - No compiler is provided in this environment with jenkins

I'm getting this error when I try a Jenkins build on a maven project: No compiler is provided in this ... anyone have ever face this 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 - Android Studio:error: illegal character: 'u2028'

I am trying to do a JSONObject request: final String URL = "https://some/url"; // Post params to be sent to ... : 'u2028' How can I fix 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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java - Ghost items in javafx ListView with custom ListCell

I try to view a custom object in a ListView using a custom ListCell. As an example to demonstrate the problem ... -fx-background-color: #ddd; } 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 - Grouping animations for sequential execution

I have a Swing program that executes 2D animations using Swing Timers. With each button click there are several ... marked in a certain 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 - How to invalidate selected session programmatically?

I'm trying to invalidate selected session (with given sessionId) from my web application runing on Jboss 4.2. ... .ManagerBase Can You help me? 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 - File Directory Navigation with Android Nanohttpd lightweight server

With the code below, i was able to create a mobile server on android phone with the Nanohttpd lightweight server. The code ... (answer); } } } : 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 email address validation

Can someone please explain this java Regex to me? ^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9 ... This regex is used to validate an email address. 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 key interruptions?

I'm trying to write a game in JavaFX but I'm having a slight issue with it and that's the key listeners ... the other one go back to 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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java - How to combine the GUI class and the scanner class?

I'm new in java and well I'm trying to create a program that will first ask the user to for some number and ... perimeter is:"+Perimeter); } } 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 - Understanding Jeprofile output

I was able to generate the Jeprofile output as follows based on the descriptions present here jemalloc post Please find the ... 8.0 GCC 9 Thank! 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 - A use case for a manual GC invocation?

I've read why is it bad practice to call System.gc(), and many others, e.g. this one describing a really ... servers I'm in charge of). 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 - Add content to a very large Excel file using Apache POI (run out of alternatives...)

I have a large xlsx file which has an empty "data source sheet" and other sheets containing lots of formulas that ... Any Ideas?? Thank you!! 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 - structuring things in XML file

I want to have something below to save in the xml file Question0 : What is ur name? Answer0: Tina Question0.0 : ... great as I am new to 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 - No suitable driver found for jdbc:mysql://localhost:3306/test

When i try to run my JSF application on Tomcat 7, it throws this exception. Caused by: java.sql.SQLException: ... to solve this problem? 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 - JDBC with ms-access?

How to connect to a Microsoft Access-based database in a Windows using JDBC code? What syntax is to be written ... driver syntax to be loaded.. 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 more than one key-pair in SSL Socket Factory Connection

I'm using a key-pair and I thinking in the possibility to use more than one private key to create ans SSL ... possible or is a dream? Thx See Question&Answers more detail:os...

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

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688 views

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java - android Wikipedia api game

Hi i have to make an app with the following requirement: When the user opens the app, it displays the ... problem any suggestions will help. 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 - Locking on Strings

2 Questions: str field is shared between two instance of A type [line 2] What's implications according to following code ... two").start(); } } See Question&Answers more detail:os...

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

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