Recent questions tagged JAVA

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java - JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory

I've been trying to sort out a connection to my DB with JPA Hibernate ... ) at core.JPAConfig$$EnhancerBySpringCGLIB$$c2bcf261$$FastClassBySpringCGLIB$$901863a2.invoke(<generated>)...

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

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java - Why is <taglib> giving me a problem in my web.xml?

I have this web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/ ... .. What more do I need to do? 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 use EnumMap instead of HashMap

As we already have HashMap, why would we use EnumMap? 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 use "tab space" while writing in text file

SimpleDateFormat formatter = new SimpleDateFormat("ddMMyyyy_HHmmSS"); String strCurrDate = formatter.format(new java.util. ... giving "space". 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 get HTML code of a WebElement in Selenium

I am new at testing so my apologies in advance if my question sounds a bit primary. I am using Selenium and Java ... -radius: 0px 0px 4px 4px;" 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 you enable a microphone input in the android emulator

I have been on a rough ride trying to do something using the Speech recognition on an android emulator. Having ... shed some light on 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 - Failed to load driver class com.mysql.jdbc.Driver

I am trying to run my Spring Boot backend with two profiles, one using H2 in memory database and the second one using ... H2) .build(); } } } 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 - Correct Way to Obtain The Most Negative Double

Is this the correct way to obtain the most negative double in Java? double v = -Double.MAX_VALUE; 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 - Joda DateTime to Unix DateTime

It's odd enough, but I didn't find any result about converting Joda(Time) DateTime to Unix DateTime (or timestamp, ... ). How can 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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java - log4j2 ERROR StatusLogger Unrecognized conversion specifier

I have log4j2 in my project when I run main method in intellij Idea ,it correct to print log. when i use ... /Root> </Loggers> </Configuration> 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 - Parsing data for Android L failed.Unsupported major.minor version 51.0

After installing ADT Plugin for Eclipse, I tried to make a new Hello world Android app. But I met with the ... my JRE compliance to 1.7. 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 - Mongo - Ignore property from being persisted

I have a standard POJO that has a set of properties in it. The POJO has been annotated as a @Document, so ... in the POJO from being persisted? 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 make reflection work on JDK 16 and later?

I have the following legacy code that I migrated to Java 16 but, due to the strong encapsulation introduced by this ... a way to make it 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 - Simulating nested loops

In a beginner's programming book (free licence) there was the following code, dynamically creating nested loops in Java ... I'm just a beginner. 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 Provide Database Independency in JDBC Without Using Hibernate.?

I am trying to solve this problem with the help of properties file, but in a Properties file, we can handle ... =manish k5=select * from dept See Question&Answers more detail:os...

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

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216 views

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java - How to store a file in a mysql database using blob

I have searched about this matter a lot but, I didn't get a proper solution for my problem, I have ... please assist me regarding 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 - How to restrict to a specific domain to login with Spring-Boot and OAuth2

I have successfully done a OAuth2 login with spring boot and Google, but I'd like to restrict logins to a ... (@company.com) must be accepted. 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 - Check if area is localized in loaded ADF

UPDATE: I found the lines for re-localization, but de the device doesn't localize itself. ... , TangoPoseData.COORDINATE_FRAME_DEVICE); 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 - "Highlighting" specific rows in a JTable

I would like to highlight specific rows in a JTable whenever the contents of the a cell match with an input from ... in each? Thanks in advance! 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 - Clarification on the meaning of the parameter block synchronization

i would like to know if this expression it is correct and if it means this: i put a write lock over the field ... this.status = newStatus; } } } See Question&Answers more detail:os...

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

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412 views

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java - RegEx for split a string with comma ignoring comma with a space

I need to write a regular expression to split a string with comma but not comma with space.I wrote one , but ... OF EPAL EW ZEALAND RI LANKA See Question&Answers more detail:os...

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

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266 views

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java - Can an interface nested inside a class be non-static?

I'm reading about some articles[1][2] online about nested interface in Java, I understand that interface A { ... /08/inner-interface-in-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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257 views

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java - Jetty: How to nest HandlerWrapper, HandlerList, and ContextHandlerCollection, and ContextHandler

I'm trying to build an api server on Jetty. I want to have multiple apis on routes that look like /apis/api1 ... . What am I missing? Cheers, 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 a superclass instance also being created when creating a subclass instance?

I have seen many threads (e.g.: Inheritance in Java - creating an object of the subclass invokes also ... reliable resource to confirm 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 - JavaFX button reacting on second click not first

I am trying to create my very first application in JavaFX and I have a problem with Button that calls a method (for ... ) { window.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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298 views

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java - Fill a form with saved cookies

I have an action class that saves my cookies like this: public String execute() { // Save to cookie Cookie name ... ="Enter your Name here"/> See Question&Answers more detail:os...

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

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334 views

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java - Mapping a document with partly-defined schema

I'm writing a demo app using Spring & MongoDB as a database. My main domain class looks like: @Document public ... found no solution. Any ideas? See Question&Answers more detail:os...

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

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297 views

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java - classNotFoundException in Loading JDBC Driver

I am a newbie in java and I'm developing a Java EE application on the Netbeans 6.9.1 IDE. I ... com.microsoft.jdbc.sqlserver.SQLServerDriver"); See Question&Answers more detail:os...

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

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