I have the following string: I want to convert it back to hashmap. I tried the following code below but the problem is that it can’t convert the string with spaces. It outputs something like this: I think it has something to do with the regex. Help! Thanks. Answer Something like this will work for you :
How to sort a list of months with years
I have a list of months with years such as: [12-2014,11-2012,5-2014,8-2012] and I have to sort them with the most recent on top (or the latest date on top) eg. [12-2014,5-2014,11-2012,8-2012] . Does anybody have any idea on how to do this in Java efficiently? EDIT: The class YearMonth is not available, I̵…
How do I keep the iteration order of a List when using Collections.toMap() on a stream?
I am creating a Map from a List as follows: I want to keep the same iteration order as was in the List. How can I create a LinkedHashMap using the Collectors.toMap() methods? Answer The 2-parameter version of Collectors.toMap() uses a HashMap: To use the 4-parameter version, you can replace: with: Or to make …
How to write a unit test for a Spring Boot Controller endpoint
I have a sample Spring Boot app with the following Boot main class Controller What’s the easiest way to write a unit test for the controller? I tried the following but it complains about failing to autowire WebApplicationContext Answer Spring MVC offers a standaloneSetup that supports testing relatively…
Convert .Java file to .Smali file
I reverse-engineered an Android application with APKTool and got .Smali files as source code output. I converted the .Smali files with an application to .Java files. I was able to successfully edit the .Java files but now I want to convert them back to .Smali so I can recompile the application with the new .S…
Android – Using Shared Preferences in separate class?
I want to save data using Shared Preferences in android. But I am looking to use separate class to do this task. I have implemented that class like below, But there is an error on getActivity(), How to solve this? Thanks Answer getActivity() is a method of Fragment not of your SavePref. In your case the simpl…
Can I use value of a local variable defined in a method, in other method in Java?
The method is not returning the value of the local variable. Can I use the value of local variable index from the following method in this method as the index of the array of the object that I want to remove. I know the scope of a local variable is limited to the method it’s declared in. But there might
How to stream url from .pls file with java?
I want to stream a radio with Java, my approach is to download the playlist file (.pls), then extract one of the urls given in that same file and finally, stream it with java. However, it seems I cannot find a way to do it.. I tried with JMF, but I get java.io.IOException: Invalid Http response everytime I ru…
Java GUI Calculator
My JTextArea does not display and no errors or problems shows up. It’s a Java GUI Calculator. Main class code: Calculator code: Any suggestions on improvements to the code? Answer You’re adding your JTextArea, text, to your screen JPanel, but you’re adding screen to nothing, and so it makes …
How to understand Spring @ComponentScan
I’m following a tutorial about Spring MVC and I cannot understand something about the @ComponentScan annotation even after reading the spring API doc, so here is the sample code: Configuring View Controllers Annotation-based Controllers My question is, for View Controllers, by adding @Configuration and …