Recent questions tagged Java

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java - Retrieve ServerValue.Timestamp from Firebase in Android app, when data is sent

I would like to know how to use Firebase's ServerValue.TIMESTAMP method, when I want to create a timestamp ... appliction. 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 - using properties within the properties file

I apologize for the title.. i couldn't find a better way to explain the situation. I use to load ... possible with some other syntax? 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 - JavaFX - how to get instance of the controller object

How do I get a reference to my controller class? Here is my code snippet. Parent root = FXMLLoader.load(getClass ... to set them at runtime. 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 - Create a text/plain Jersey response

I have some code that works, but I am looking for a better way to do it. I have a RESTful web API ... embedded Jetty and Jersey options. 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 - OkHttpClient cannot cancel Call by tag

I recently upgraded to OkHttp3, and noticed that you could no longer cancel a Call by tag directly from the Client. ... or queued Call by tag. 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 android app Database with big amount of data

The database of my application need to be filled with a lot of data, so during onCreate(), it's not ... attribute with all sql instructions? 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 count term frequency for set of documents?

i have a Lucene-Index with following documents: doc1 := { caldari, jita, shield, planet } doc2 := { ... , applied to client search queries. 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 a Jar File be updated programmatically without rewriting the whole file?

It is possible to update individual files in a JAR file using the jar command as follows: jar uf TicTacToe. ... way to do it programmatically. 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 synchronized block have max reentrant limit?

As we know, ReentrantLock has a max reentrant limit: Integer.MAX_VALUE; Does synchronized block have reentrant ... reentrant limit test? 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 - Accent and case insensitive collation in Oracle with LIKE

I have found this answer useful: Accent and case insensitive COLLATE equivalent in Oracle, but my question is ... case and accent insensitivity. 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 - I can't see Android SDK javadoc in Eclipse

I am developing for Android in Eclipse Helios. I'm using the latest ADT plugin 8.0.1. Previously, I ... it stopped working for some reason. 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 update expandable list view when adapter's data changes

I have an activity that extends ExpandableListActivity. I use SimpleCursorTreeAdapter to fill ExpandableListView. My layout contains ... ; } } } 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 - Run jar with dependencies from the command line

Java can run jar files from the command line like this: java -jar foobar.jar However, if foobar.jar ... dependencies from the command line? 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 - JMeter - response time calculation

Can someone explain me please how JMeter calculate response time? I need to understand this graph: Response Times Over Time. 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 Jersey 2.x web service on Weblogic 12.1.1

I'm trying to deploy Jersey 2.13 web services to Weblogic 12.1.1. This version of weblogic is compliant with JSR- ... 12.1.1 or below? 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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251 views

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java - Kafka KStreams - processing timeouts

I am attempting to use <KStream>.process() with a TimeWindows.of("name", 30000) to batch up some KTable values and ... me a chance to use 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 - Efficiency of Multithreaded Loops

Greetings noble community, I want to have the following loop: for(i = 0; i < MAX; i++) A[i] = B[i ... is more efficient then the other and why? 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 make a Jsoup whitelist to accept certain attribute content

I'm using Jsoup with relaxed whitelist. It seems perfect but I would like to keep the embedded images tags like ... Is it possible with jsoup? See Question&Answers more detail:os...

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

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326 views

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java - Pass class type as parameter to use in ArrayList?

I need to write a java method which takes a class (not an object) and then creates an ArrayList with that ... can I accomplish this 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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java - Loading a JAR dynamically from memory

I want to load a JAR dynamically, straight for memory. Say, I have a buffer that contains a JAR, and I want ... take care of this by myself? See Question&Answers more detail:os...

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

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440 views

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java - Thread safety when iterating through an ArrayList using foreach

I've got an ArrayList which is being instantiated and populated on the background thread (I use it to store the Cursor ... } } return false; } } 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 equivalent format string of DateTimeFormatter.ISO_OFFSET_DATE_TIME?

Do we know if there is an equivalent format string that outputs the same result as DateTimeFormatter. ... would output the same See Question&Answers more detail:os...

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

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238 views

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java - Sip Error while registration

I am using native methods of sip calling and it is working fine but some time it is giving ... CallingScreen.fa.calling_screen_text.setVisibility(View.GONE); CallingScreen.fa....

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 - Oracle getConnection slow

In a Java project, I am using an ojdbc6 jar <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc6</ ... this property is in oracle? 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 - Duck example strategy pattern - Head first design pattern

I want to ask something about duck example on this book that made me confused and I feel contradictions. Problem the ... 't get from the book. See Question&Answers more detail:os...

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

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314 views

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java - Start / stop a web application from itself?

I've made a web application using Java, Struts and running over Apache Server and Tomcat. It would be very useful to ... etc)? Thank you 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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207 views

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java - what is the difference between pass by reference and call by reference?

what is the difference between pass by reference and call by reference 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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340 views

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java - What's the proper way to use reflection to instantiate objects of unknown classes at runtime?

I am working on a Configuration Loader class so that I can change the parameters of my program via an external ... from a single parent 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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