Recent questions tagged java

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java - Adding pull to refresh on webview for refreshing

I will add pull to refresh on my webview so it refresh my webview. i have seen all questions on this page ... and solve this problem for 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 - Spring-data-mongodb connect to multiple databases in one Mongo instance

I am using the latest spring-data-mongodb (1.1.0.M2) and the latest Mongo Driver (2.9.0-RC1). I have a ... I will post the answer here. 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 - ConversionService in Spring

I'm following this scheme in a Spring application. Request is sent to the server with the id of the object and some ... .find((String)name); } } 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 many-to-many cascading delete

I have 3 tables in my database: Students, Courses and Students_Courses Students can have multiple courses and ... documentation on the web. 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 - Using HTTP Basic-Auth with Google App Engine URLFetch service

How can I specify the username and password for making Basic-Auth requests with App Engine's URLFetch service ( ... headers for Basic-Auth? 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 class in interface vs in class

What is the difference between these two innerclass declarations? Also comment on advantages/disadvantages? case ... text book semanticissiests. 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 - Iterate through JSONObject from root in json simple

I am trying to iterate over a json object using json simple. I have seen answers where you can do a ... : class org.json.simple.JSONObject 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 could I implement autocompletion using Swing?

I'm interested in providing an autocompletion box in a JFrame. The triggering mechanism will be based on ... to available [J]Components. 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 use of Collections.synchronizedList() method? It doesn't seem to synchronize the list

I am trying to add String values to an ArrayList using two threads. What I want is that while one thread ... () not doing the synchronization? 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 - Should we use clone or BeanUtils.copyProperties and why

By the looks of it - BeanUtils.copyProperties seems to create a clone of an object. If this is the ... provide a similar functionality. 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 - Usage of BufferedInputStream

Let me preface this post with a single caution. I am a total beginner when it comes to Java. I have been ... I would love some feedback. 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 - using Spring JdbcTemplate - injecting datasource vs jdbcTemplate

As per Spring documentation, the steps to use Spring JdbcTemplate is as follows: <?xml version="1.0" ... the component class directly? SGB 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 - Detect Android app upgrade and set Application class boolean for show/hide of EULA

I'm attempting to detect when my application has been upgraded using a BroadcastReceiver and set a boolean in my ... /intent-filter> </receiver> 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 - Trying to locate a leak! What does anon mean for pmap?

I'm trying to locate where my memory has gone for a java process running in linux. Someone suggested I use pmap ... entries of this (4000+)? 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 programmatically include layout (i.e. without XML)

So I've created an Activity subclass called CustomTitlebarActivity. Essentially, each main activity in my app ... slightly between activities.) See Question&Answers more detail:os...

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

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455 views

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java - IntelliJ IDEA Debugger isn't working on a Grails Project

I can't debug my code in IntelliJ IDEA. When debug mode is active and running, but the breakpoints don't have ... What am I supposed 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 - Spring: Using builder pattern to create a bean

I use ektorp to connect to CouchDB. The way to build an ektorp HttpClient instance is to use builder pattern: ... . Are any other options? 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 - Can spring @Autowired Map?

Here's the Map @Autowired private Map<String, ISendableConverter> converters; and ISendableConverter public interface ... ? and 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 to download SNAPSHOT version from maven SNAPSHOT repository?

So I have a project and I do regular releases to maven without a problem. I now want to make available a ... to my local (.m2) repository? 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 - jarsigner: This jar contains entries whose certificate chain is not validated

I'm trying to code sign a JAR file and am using JDK 1.7u1. We acquired a GoDaddy Code Signing certificate and ... signed properly for JDK 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 - Synchronising twice on the same object?

I was wondering if in Java I would get any odd behaviour if I synchronise twice on the same object? The ... other odd results that might occur. 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 - Conversion from null to int possible?

I know that when I read the answer to this I will see that I have overlooked something that was under my ... runtime (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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java - How to pass system properties to a jar file

I have a main class that expects certain properties that I pass using the -D option. I can access this in my ... pointers on what is going on? 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 elements of a string array to a string array list?

I am trying to pass a string array as an argument to the constructor of Wetland class; I don't understand how to ... add(speciesArr[i]); } } } 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 find the number of years between two dates?

I am trying to determine an age in years from a certain date. Does anyone know a clean way to do ... something this size is probably overkill. See Question&Answers more detail:os...

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

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173 views

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java - How can I utilize SimpleDateFormat with Calendar?

I've got GregorianCalendar instances and need to use SimpleDateFormat (or maybe something that can be used with ... good as permanent solutions. See Question&Answers more detail:os...

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

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468 views

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java - Double-click event on JList element

I have a JList with a DefaultListModel. How I can make an item in a JList react to double-click event? 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 does this boolean "(number & 1) == 0" mean?

On CodeReview I posted a working piece of code and asked for tips to improve it. One I got was to use a ... work, in case anyone is wondering. See Question&Answers more detail:os...

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

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