Recent questions tagged JAVA

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java - "Constructor cannot be applied to given types" when constructors have inheritance

This is my base class: abstract public class CPU extends GameObject { protected float shiftX; protected float shiftY; ... How to solve 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 - Multiple Styles to Excel Cell POI

I want to apply colour to cell as well as Format Cell value(e.g. Date,Amount).But when I ... ); cell9.setCellStyle(dateCellStyle); 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 405 POST method not supported?

How could POST method not support by Spring Boot MVC ?! I am trying to implement a simple post method ... in supportedMethods are {GET,HEAD} 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 is my String returning "ufffdufffdN a m e"

This is my method public void readFile3()throws IOException { try { FileReader fr = new FileReader(Path3); ... from properly reading the 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 - Make JSpinner Select Text When Focused

I would like to change the behavior of a JSpinner so that when you click on the text, it selects it. This ... not at the same time though). 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 - JPA - Optional columns

We have many customers data in separate databases per customer which should have the same schema/table structures ... t have them unfortunately. 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 - Are there any android application framework like spring?

are there any android application framework like spring? 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 MVC PUT Request returns 405 Method Not Allowed

I am using spring mvc to set up a rest api and most of the configurations are set up automatically through the ... </scope> </dependency> 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 - Set style on TableRow in Android

Using the Android SDK, there doesn't seem to be any way to set the style on a table row. I want to do ... Does anyone know how to find 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 - Saving audio byte[] to a wav file

Been having a bit of trouble over the last few days trying to get this to work. But what I want is we ... just save it with a binary writer? 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 insert a updatable record with JSON column in PostgreSQL using JOOQ?

I followed the answer in Is it possible to write a data type Converter to handle postgres JSON columns? to implement ... ()); r.store(); 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 - TransformerFactory and Xalan Dependency Conflict

I have the following code: javax.xml.transform.TransformerFactory factory = TransformerFactory.newInstance(); factory. ... as a dependency? 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 MySQL Database Initialization Error with Stored Procedures

In a Spring Boot application I am attempting to initialize some MySQL database tables and stored procedures before running ... Won't Fix label. 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 - Could not create local repository at /var/root/.m2/repository

My local maven repo is here /Users/power/.m2/repository. But I got this error [java] [ERROR] Could ... my maven tasks using root permissions. 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 queryString of a URL on FreeMarker

learning FTL here. I'm trying to get add a query string on my FTL page, like http://localhost/search, i'd like ... ://www.google.com on the h1. 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 upload a multipart file using angular js spring mvc

I am trying to upload a file using angularjs and spring MVC I have a multipartResolver bean ... .web.multipart.MultipartHttpServletRequest 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 custom data source to Jaspersoft Studio

I am trying to fill a table by passing a custom data source to it. I have created a simple report with a ... </band> </detail> </jasperReport> 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 - Hidden fields though inheritance

In the following code example: class Parent { int x =5; public Integer aMethod(){ System.out.print("Parent. ... x print 5" - Thanks @thinksteep 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 "throws Exception" bad practice?

I'm reviewing code for a colleague and I encounter a piece of code similar to this: public X Foo1(Y y) throws ... practice? Or is this code ok? 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 - Apache POI-HSSF vs POI-XSSF

HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) file format. XSSF is the POI Project's ... , or why would I use XSSF? 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 - Difference between isElementPresent and isVisible in Selenium RC

What is the difference between element isElementPresent and isVisible in Selenium RC. I get true for selenium. ... on selenium.isVisible() 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 order in a declaration of multidimensional array have an influence on used memory?

How many bytes will be allocated for a and b? import android.graphics.Bitmap; Bitmap[][][] a = new Bitmap[1000 ... it will be good to save some. 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 MVC populate @RequestParam Map<String, String>

I have the following method in my Spring MVC @Controller : @RequestMapping(method = RequestMethod.GET) public String ... "test" 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 - Proper way to autowire a Hibernate Session in a Spring Transaction JUnit test

This question is similar to a previous one. I am trying to @Autowire a Hibernate Session in one of my ... define my Hibernate Session bean? 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 - Generate additional custom method with jaxb-xjc

There's some way to generate a custom method within an class generated with JAXB. I search around tutorials, ... class described on XML Schema. 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 - Unable to get Scene from MenuItem in JavaFX

I am trying to change the scene in a javafx stage based on menuItem click. Here is my sample. ... .scene.Node at sample.Controller.onTweetsMenuActionPerformed(Controller.java:29)...

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

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java - Is there a solution about Gson "circular reference"?

I have found many articles about the circular reference with Gson, but I can't find an elegant solution. As ... strategy to solve the problem? 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 - Creating a method reference on a null-reference does not throw an exception

Is there a reason why it is possible to create method references on a null reference in Java? Doing this is ... a null pointer 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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