Recent questions tagged java

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java - Confusion in choosing between JavaGit, JGit and EGit

I am making a Java application that uses Git. I found that there is something called JavaGit, EGit and JGit ... in a class called BundleWriter 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 force derived class to call super method? (Like Android does)

I was wondering, when creating new Activity classes and then overriding the onCreate() method, in eclipse I always get ... Or how is it done? 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 compile with -Xlint:unchecked?

I'm getting a message when I compile my code: Note: H:Project2MyGui2.java uses unchecked or unsafe ... recompile with -Xlint:unchecked? 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 set environment variable or system property in spring tests?

I'd like to write some tests that check the XML Spring configuration of a deployed WAR. Unfortunately some ... spring context is initialized. 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 - Take a screenshot of RecyclerView in FULL length

I want to get a "full page" screenshot of the activity. The view contains a RecyclerView with many items. I ... should I approach this 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 - How to redirect all console output to a GUI textbox?

I currently have a program that prints lines of text to the screen in various manners such as 'System.out. ... doing this. 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 - producer/consumer work queues

I'm wrestling with the best way to implement my processing pipeline. My producers feed work to a BlockingQueue. ... feels gross.) Suggestions? 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 - Android - Tabs, MapView, activities within tabs

We're in the process of writing an app that has 4 tabs: Map, People, Places, Events. The People, Places, ... too simplistic for our use case. 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 specify KeyValueTextInputFormat Separator in Hadoop-.20 api?

In new API (apache.hadoop.mapreduce.KeyValueTextInputFormat) , how to specify separator (delimiter) other than tab(which ... tab as a separator. 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 batch inserts in hibernate?

With hibernate, when I attempt to enable batch inserts with <property name="jdbc.batch_size">50</property> I get ... Am I missing a setting? 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 - RESTEasy client framework authentication credentials

RESTEasy (a JAX-RS implementation) has a nice client framework, eg: ServiceApi client = ProxyFactory.create( ... credentials to this client? 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 Security logout does not work - does not clear security context and authenticated user still exists

I know, there are many articles about this topic, but I have a problem and I can't find any solution. I ... my config and the logout process? 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 - Load and display all the images from a folder

I want to read all the images in a folder using Java. When: I press a button in the Java ... welcome! Please provide reference links! 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 - hibernate unique key validation

I have a field, say, user_name, that should be unique in a table. What is the best way for validating it using Spring/Hibernate validation? 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 - best way to externalize HTML in GWT apps?

What's the best way to externalize large quantities of HTML in a GWT app? We have a rather complicated GWT app ... ought to be a simpler way. See Question&Answers more detail:os...

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

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261 views

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java - How does the Jackson mapper know what field in each Json object to assign to a class object?

Let's say I have a Json object like this: { "name": "Bob Dole", "company": "Bob Dole Industries", " ... an explanation that made sense to me. 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 - Subscribe and Read MQTT Message Using PAHO

I'm using paho to send and receive mqtt messages. So far it has been no problem to send the messages, I' ... TODO Auto-generated method stub } } 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 - Hibernate second level cache with Spring

I'm using Spring + JPA + Hibernate. I'm trying to enable Hibernate's second level cache. In my Spring's ... .xml weren't even being read. 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 - Tomcat's Clustering / Session Replication not replicating properly

I'm setting up clustering/replication on Tomcat 7 on my local machine, to evaluate it for use with my ... or further questions are welcome. 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 - ExecutorService's surprising performance break-even point --- rules of thumb?

I'm trying to figure out how to correctly use Java's Executors. I realize submitting tasks to an ExecutorService ... , TimeUnit.SECONDS); } } 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 change fragment with the Bottom Navigation Activity?

I created a new project with the "Bottom Navigation Activity": This is the generated code: package com.aaron.waller. ... how can I do that? 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 of making a singleton a Spring bean

I am converting a singleton to a Spring bean, so that if the singleton fails to initialize, then entire web ... spring bean. I chose singleton. See Question&Answers more detail:os...

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

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259 views

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java - How to add WAR inside EAR with Maven

I have EAR with an application and I need to extend this app with my own code that is packaged as a WAR. ... only the binary file nothing more. 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 - Jackson deserialization error handling

My problem is fairly simple : I have the following simple class: public class Foo { private int id = -1; public ... you any clue on this issue? See Question&Answers more detail:os...

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

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421 views

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java - JavaEE6 DAO: Should it be @Stateless or @ApplicationScoped?

I'm currently creating an EJB3 Data Access Class to handle all database operations in my Java EE 6-application. ... the full Java EE 6 platform See Question&Answers more detail:os...

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

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175 views

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java - Mutual-authentication with web services

Currently, I've been successful implementing Mutual Authentication security so long as the client accesses the website ... This is 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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95 views

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java - Convert a PDF file to image

I wanted to convert PDF document into image. I was using Ghost4j. Problem: Ghost4J needs gsdll32.dll file at runtime, ... java:53) ... 13 more 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 - Not getting currency symbols for specific Locale

I am trying to get the symbols of the currencies based on their Locale. But instead of returning a symbol, it is ... instead of doller sign($). See Question&Answers more detail:os...

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

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