Recent questions tagged Java

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java - Spring Data configuration - hibernate.properties not found

I try to configure Spring Data with Hibernate in-memory database, based on this and this answers: <beans xmlns=" ... in advance for every 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 - How to call method in main activity from other activity?

I want to call public method in main activity from other activity. How can I do that? class MainActivity extends ... () in MainActivity? } } 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 - Screenshot of the full web page loaded into JavaFX WebView component, not only visible part

I'm writing my first lines of code after 2 years of managerial work. No time to read a lot of docs, ... . Please suggest how to proceed. 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 - Auto populating Set

Is there anything like AutoPopulatingList but for Set? The data that I want to show is an association that ... trying to implement dynamic form 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 - Does Android have any way to detect cyanogenmod and its version?

I'm working on an android media player which needs equalizer. However, equalizer is only available on Gingerbread and ... to detect OS version. See Question&Answers more detail:os...

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

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532 views

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java - Getting Filename/FileData as key/value input for Map when running a Hadoop MapReduce Job

I went through the question How to get Filename/File Contents as key/value input for MAP when running a Hadoop MapReduce ... { return null; } } 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 - Get ArrayList of all possible permutations of an ArrayList

I am trying to get all possible permutations of an ArrayList that are the same length as the input arrayList. I ... into an ArrayList>. 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 - How can I map multiple values from select tag in Struts 2?

I have a multi-selection combo in my Struts2 web application. I use the ui-multisection component. When I select and ... > </package> </struts> 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 - Throughput and Latency on Apache Flink

I have written a very simple java program for Apache Flink and now I am interested in measuring statistics such as ... how should I use 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 - Delete cache while using glide

I know it is a very basic question. I have tried to find the numerous solution but I am not able to understand ... old pic instead of new one. See Question&Answers more detail:os...

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

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644 views

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java - Datetime parsing error

I am having problem parsing dates in Java. Below is the code. String dateString = "2017-12-13T16:49:20. ... available for API level below 26. 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 - Does the ModelDriven interface poses a security explot in struts2?

background: I coded a struts2 ActionSupport class with ModelDriven. It's a hibernate/spring web app, using OSIV ... the transaction to commit. 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 - Getting Captcha image using jsoup

I am trying to develop a small java-GUI based application by fetching captcha from my academics URL, asking ... Please point out my mistakes. 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 would you want to declare a true false variable as type int?

The code below is from one of the classes in a SDK jar I'm using in my app. How did it compile with int as ... + bestWidth + "x" + bestHeight); 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 update the JTextField when the variable value is changed?

I have two Java(.java) files. One has a JButton and JTextField and the other has a Thread. In first Java ... ; textField.setColumns(10); } } 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 detect backspace in a keyTypedEvent

I'm using Netbeans' bean form to create my GUI. I've added a keyTyped event to a JTextArea and I want to ... typed key is Backspace (or Delete)? 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 circle on JPanel after mouse click

I want to draw circle only after mouse gets click. As paintComponent method called itself, so first circle draw without ... ); repaint(); } } See Question&Answers more detail:os...

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

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573 views

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java - Is a switch executing all the cases without stopping?

I'm on Java 8v60. I tried to embed a switch regarding an exception group in a catch block. Apparently, the case ... Weird, isn't it. Any idea? See Question&Answers more detail:os...

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

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594 views

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java - Is there a way to re-use a <util:list> in spring configuration file?

I have a bunch of rules to be injected into a set of classes, something like below: <bean id="rule1" ... the reference to the common list. 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 - Does anyone know where I can find the "Orto" Javascript JVM?

I've read about "Orto", a Java virtual machine that runs on Javascript, but I can't find the actual code, only ... is Scala, so GWT won't 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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725 views

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java - Encapsulation and Getters

I was reading this article on why getter and setters are evil. The article doesn't say not to use them ... times where a getter is necessary? 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 - BodyEditorLoader - noSuchMethod

So, I started using Physics Body Editor as an extension to libgdx. I also use Android Studio to compile ... .run(GLSurfaceView.java:1239) See Question&Answers more detail:os...

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

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607 views

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java - How to pass constructor's parameters with jackson?

i am trying to desearlize an object using Jackson this.prepareCustomMapper().readValue(response.getBody(), EmailResponse ... your help. Regards See Question&Answers more detail:os...

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

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908 views

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java - How to avoid Spring batch persistence of metadata in DB

I have a Spring batch job that reads from a DB and writes into a CSV. The batch job is trying to use the DB ... 1.0.1.0] at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:...

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

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560 views

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java - Perspective Vision on Canvas

today I'm bringing a subject about Pseudo 3D and perspective. I was checking the video #1 Java Classical 3D ... use to create the walls. See Question&Answers more detail:os...

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

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530 views

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java - Inject not working for nested objects[Jersey 2.22.1]

I have a Jersey resource with a facade object injected. This is configured in my ResourceConfig and the facade gets injected ... ) {} }; } } See Question&Answers more detail:os...

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

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772 views

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java - JavaFX LineChart legend style

I want to update the style of LineChart legend, i using setStyle on the nodes with the correspoding series class. ... new series has been added? See Question&Answers more detail:os...

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

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677 views

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java - Apache POI XSSFPivotTable setDefaultSubtotal

I am having an issue with the setDefaultSubtotal method for axisRow pivotFields. When I set the value to false for ... I'd appreciate a pointer. See Question&Answers more detail:os...

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

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