Recent questions tagged java

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java - How to run two methods simultaneously

I have this piece of code: public static void main(String[] args) { Downoader down = new Downoader(); ... ) simultaneously? If so, how? 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 convert a string into a GZIP Base64 string?

I've been trying to figure out using GZIPOutputStream's and the like but have had no success with understanding ... then converted into Base64. 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 birthday for each contact in Android application

In my android application, I read out all the contacts with the following code: ContentResolver cr = ... date of birth correctly? 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 - Cloning with generics

Once upon a time there was a class: public class Scope<C extends Cloneable & Comparable<C>> implements Comparable< ... How should I clone 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 - Spring: Annotation-driven Transaction Manager

I'm setting up a new, JPA+Spring project. What is the difference (for me as a programmer) between: <tx: ... " /> in my applicationContext.xml? 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 - RequestDispatcher for remote server?

I am trying to create a HttpServlet that forwards all incoming requests as is, to another serlvet running on ... 't introduce any dependencies. 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 portably read configuration data from a servlet

I'm writing a Java servlet that needs to read some site-specific configuration data; I would like it to be ... only works in Tomcat and Jetty. 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 using XML to create GUI is a good practice in Android

I am from Java Swing background. May I know why using XML to create GUI is a good practice in ... among GUI desktop application developers? 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 unmarshall in jaxb and enjoy the schema validation without using an explicit schema file

I am using jaxb for my application configurations I feel like I am doing something really crooked and I am looking for ... ? How do you 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 - Connecting to a VPN without installation of client software

I must sometimes write software to establish a socket with a particular server residing within a Cisco VPN. ... installing any client software? 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 - JVM Crash - "EXCEPTION_ACCESS_VIOLATION"

Today I decided to continue working on a program that I had created for my Computer Science class. Upon running it, I ... 512K, reserved 1048576K } Event: 0.110 GC heap before...

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

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java - Getting started with SNMP4J

I need to make an agent in SNMP4J, but the documentation on how to get started is pretty poor. Does anyone have ... how to get started? 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 - Understanding mappedBy annotation in Hibernate

I am trying to understand the mappedBy attribute of @OneToMany annotation in JPA. I created below example ... declared the mappedBy attribute? 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 - Split a list into two sublists in all possible ways

I have a list of variable size, for example [1, 2, 3, 4] and I want to get every possible way to split ... is not very nice looking in general. 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 use predefined formats in DOCX with POI?

I'm creating a docx generator with POI and would like to use predefined formats. Word includes several formats ... me to the correct solution? 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 map a nested collection, Map<Key,List<Values>>, with hibernate JPA annotations?

I have a class I am not sure how to annotate properly. My goal for Holder::data: List should maintain order not ... // create and update date } 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 find element on closed window on IE 11 with Selenium

I'm trying to run tests on Internet Explorer 11 working with Selenium WebDriver. The code is: System.setProperty ... on Firefox and Chrome. 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, how to post form without clicking submit button?

I know that in HtmlUnit i can fireEvent submit on form and it will be posted. But what If I disabled javascript ... but it does not always 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 - JpaSpecificationExecutor JOIN + ORDER BY in Specification

I have a query using a JOIN and ORDER BY and want to use it within my repository using the ... CriteriaQuery into a Specification/Predicate. 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 me - Logging in J2ME

What logging solutions exist for j2me? I'm specifically interested in easily excluding logging for "release" ... package & memory footprint. 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 - Enable CORS for OPTIONS request using Spring Framework

Every time I make a PUT Ajax call to my service, it return the following error: XMLHttpRequest cannot load ... wrong with the 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 - Recording Live OpenCV Processing on Android

My goal is to do a couple things: Use OpenCV and the JavaCameraView to process frames from the phone's camera feed ... (filename, rgbMat); Log.i("VideoTest", "Success writing im...

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

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255 views

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java - Hibernate SQL Query result Mapping/Convert TO Object/Class/Bean

1 2: select (table.*)/(all column) is OK String sql = "select t_student.* from t_student"; //String sql = ... for this error, help me please! 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 - What is the fastest way to get the domain/host name from a URL?

I need to go through a large list of string url's and extract the domain name from them. For example: http:/ ... these urls may be http or https 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 - what is the right way to handle errors in spring-webflux

I've been doing some research using spring-webflux and I like to understand what should be the right ... /LearningByExample/reactive-ms-example 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 - PATCH request using Jersey Client

I want to execute a PATCH request supported by our server for testing using Jersey client. My ... handle(URLConnectionClientHandler.java:153) See Question&Answers more detail:os...

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

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94 views

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java - Where to put hibernate annotations?

Where do i put my hibernate annotations? Is it the line above my instance variable? Or before the getter? Or ... it really matter? Thanks a lot 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 Android's webview addjavascriptinterface

I know that to interact from Javascript to Java you have to inject a Java object using the addjavascriptInterface method ... to call my object? See Question&Answers more detail:os...

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

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