Recent questions tagged Java

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java - How to customize property name in JAXB?

I am using JAXB to generate java classes based on some XSD schemas. For an element such as: <xsd:element ... method names generated by jaxb? 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 - append values dynamically into an long[] array

i need some help regarding adding values into an array for example long[] s = new long[] {0, 1, 2}; when i do ... , a.length, x.length); a=tmp; 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 - Test case for 100% branch coverage with no fault?

The problem statement is A method that has a zero fault that you can write a test suite to that has 100% statement ... doesn't find the fault ? 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 - "The constructor is not visible" error

I have two classes : First, with one constructor : public class First { First (ObjectA myObjectA) { //do stuff } ... . Can you explain me why ? 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 - calling a function in a class's "owner" class

Following pseudocode sums up my question pretty well I think... class Owner { Bar b = new Bar(); dostuff(){... ... , am I on the right track? 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 - DH key size must be multiple of 64, and can only range from 512 to 2048 (inclusive)

I have a set-up in which I am executing a build from Jenkins on a Solaris Server connecting via sshexec task in ANT ... me know how to fix 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 - Is there a floor function in Mongodb aggregation framework?

I try to do some integer math in mongodb and have some problems. Is there a way to round doubles up ... in the mongo db aggregation framework? 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 ShortCut Keys to JTextField?

I am Stuck in some Step that I Can't Add a Shorcut Key like: CTRL+SPACE to my program , I am Searching for ... and I could'd find any answers . 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 properly implement a Dialog box using libgdx

I'm struggling with implementing a dialog box in my program. The main program does not use stage. However when the ... happy to hear it 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 - Inner Text and child elements

I would like to deserialize XML like the following using JAXB in Java: <?xml version="1.0" encoding="UTF-8"?> <root ... SEVERE, null, ex); } } } 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 all mapped Entities from EntityManager

I have a piece of maintenance code that should grant select privileges to a certain user at certain points of ... Hibernate under the hood). 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 - bitwise most significant set bit

I want to find the most significant bit that is set to 1. I have tried every possible way from & to ORing ... 1000000 I would like to have 7. 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 - Dynamic value binding of JSF component

How do I bind a value of certain component dynamically at runtime? For example, I have the following component ... should I do the traversing? See Question&Answers more detail:os...

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

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491 views

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java - Issue with a date extraction in SQL Server

I'm trying to list the dates registered in a table with SQL Server, but my problem is all the ... incorrect after retrieving from database). 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 - difference between these 2 ways of initializing an simple array

In java, I can initialize an array with predefined content either by : int[] myArr = new int[]{1,2,3}; Or ... ? Which way is better and why? See Question&Answers more detail:os...

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

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409 views

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java - Is using Object.wait and Object.notify directly a code smell?

This might be controversial, but I just realized I very seldom use wait and notify directly. Instead, I ... building higher-level constructs? See Question&Answers more detail:os...

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

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640 views

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java - Regexp for german phone number format

I try to get phone numbers from string in german format. But I don't get it to full run. The input text is a full ... . I have no idea 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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java - How to select Element with empty class using Jsoup

I want to select the element with class="" like <li class="" > </li> I used Elements topProductSecNav = ... String must not be empty 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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353 views

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java - How to add 20 pixels of white at the top of an existing image file?

I have an image of size w by h. In Java, I need to create an image that is size w by h+20 where the top w ... ...code to save the new image... } 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 - Adding a dynamic servlet using servlet 3.0 throws exception

I need to create add servlets at runtime. When I run the following code. protected void processRequest( ... I doing 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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392 views

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java - ScrollView inside a fragment with TabLayout is not scrolling, why?

im a noob in android development and i was in a introduction course of Cryptography so i decide ... setSupportActionBar(toolbar); TabLayout tabLayout = (TabLayout) findViewBy...

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

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435 views

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java - Servlet 3.0 annotations <welcome-file>

Is it possible to set welcome-file tag from standard web.xml file by servlet 3.0 annotation ? <welcome-file-list ... -file> </welcome-file-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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581 views

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java - Android default button color

When I open a new android studio project, the default color for button is purple. I want the default color to be ... theme here. --> </style> See Question&Answers more detail:os...

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

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620 views

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java - IntelliJ doesn't load javafx packages from Maven dependencies (JavaFX 17)

I'm trying to get a Maven/JavaFX project, created from the javafx-archetype-fxml archetype and unedited, to ... JavaFX is bundled/distributed. 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 - swing mouse listeners being intercepted by child components

I have a swing component that has several sub components. What I want to do change some label if the mouse is ... parent event if I wanted 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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444 views

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java - Changing color of selected text in jTextPane

I am creating a text editor using a JTextPane that allows the user to change the color of selected text. ... the question. 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 - Replace this if-then-else statement by a single return statement

While solving sonarQube issue i face the below warning,does any one tell me how to overcome this warning Method ... ones should be simplified. 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 createBlockOutputStream when copying data into HDFS

I am getting the below warning messages while copying the data into HDFS. I've 6 node cluster running. Every ... you need any other details. See Question&Answers more detail:os...

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

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