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Tag: java

Rearrange modifier keywords in IntelliJ

Is there any way to automatically rearrange modifier keywords in IntelliJ? For example, if I have the following code: Rearrange it to: Answer Go to Settings and enable the Editor | Inspections | Java | Code style issues | Missorted modifiers inspection. It has a quick fix to sort the modifiers. This inspectio…

Java – Write hashmap to a csv file

I have a hashmap with a String key and String value. It contains a large number of keys and their respective values. For example: I would like to write this hashmap to a csv file such that my csv file contains rows as below: I tried the following example here using the supercsv library: http://javafascination…

How to download GZip file from S3?

I have looked at both AWS S3 Java SDK – Download file help and Working with Zip and GZip files in Java. While they provide ways to download and deal with files from S3 and GZipped files respectively, these do not help in dealing with a GZipped file located in S3. How would I do this? Currently I have: C…

What is Pure Java [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 5 months ago. Improve this question I was invited to interview for Pure Java Developer Please help me to…

Shared Preferences on a Null Object Reference Android

I am new to android developing maybe its a silly question but please help me. I am getting this error while trying to save an int value. Caused by: java.lang.NullPointerException: Attempt to invoke virtual method ‘android.content.SharedPreferences android.content.Context.getSharedPreferences(java.lang.S…

Rotate image continuously

I want to rotate the ring image constantly in anticlockwise direction here is my code Answer I guess the Actions are what you are looking for. An Action can be added to Actors (and subclasses) and they will be performed inside the act(delta) method, of the Actor. In your case you could use the Actions.rotateB…