Can Android Studio be used to run standard Java projects

Question

For those times when you want to isolate the Java and give it a quick test    Can you run non-Android Java projects in Android studio as in Eclipse

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Spent a day on finding the easiest way to do this. The purpose was to find the fastest way to achieve this goal. I couldn't make it as fast as running javac command from terminal or compiling from netbeans or sublime text 3. But still got a good speed with android studio.

This looks ruff and tuff way but since we don't initiate projects on daily bases that is why I am okay to do this.

I downloaded IntelliJ IDEA community version and created a simply java project. I added a main class and tested a run. Then simply closed IntelliJ IDEA and opened Android Studio and opened the same project there. Then I had to simply attach JDK where IDE helped me by showing a list of available JDKs and I selected 1.8 and then it compiled well. I can now open any main file and press Control+Shift+R to run that main file.

Then I copied all my Java files into src folder by Mac OS Finder. And I am able to compile anything I want to.

There is nothing related to Gradle or Android and compile speed is pretty good.

Thanks buddies

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I installed IntelliJ IDEA community version from http   www jetbrains com idea download   I tried opening my project that I started in Android studio but it failed when at gradle build   I instead opened both android studio and intellij at same time and placed one screen next to the other and simply drag and dropped my java files  xml layouts  drawables  and manifest into the project hiearchy of a new project started in IntelliJ   It worked around the gradle build issues and now I can start a new project in IntelliJ and design either an android app or a basic Java app    Thankfully this worked because I hated having so many IDEs on my pc

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EDIT  many moon after this question was asked  yes  now apparently you can   No  but it s based on Intellij IDEA   The community version of that is free for download but it doesn t support most things requiring an external database or application server  The line for Java is pretty much that JavaSE code can happily use Community   If you want that  or are using JavaEE  then you either need the Ultimate version  which isn t free  or the EAP of the next version which is usually good for a month until they release another   Basically it works like this  Android Studio is just Android the Android Stuff from IDEA 13 Community         which will be free  and is anything from IDEA 13 Ultimate         that doesn t require a database or app server   http   www jetbrains com idea   IDEA 12 Community doesn t have the ability to import the gradilized project and it won t  so while you can do Android development in it now  I do   don t expect it to have the same features as Android Studio  There s a lot of good new Android stuff in it  that s going into 13

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Tested in Android Studio 0 8 14  I was able to get a standard project running with minimal steps in this way   In an open Android Studio project  click File   New Module  Click More Modules   Java Library   Next  then fill in whatever you prefer for the names  A new module will appear as a folder on the same level as your  app  folder in the Project Structure   Open it and open the new Java class file    You can then add your code  and choose Build   Run  YourClassName    Presto  your code is running with no Android device

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I have been able to do it using following steps      Open Android Studio and select  Import Project    Browse to your project folder in the browse window and select it

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I found a somewhat hacky  annoying and not-completely-sure-it-always-works solution to this  I wanted to share in case someone else finds it useful   In Android Studio  you can right-click a class with a main method and select  Run  main     This will create a new Run configuration for YourClass  although it won t quite work  it will be missing some classpath entries   In order to fix the missing classpath entries  go into the Project Structure and manually add the output folder location for your module and any other module dependencies that you need  like so    File -  Project Structure     Select  Modules  in the Project Settings panel on the left-column panel Select your module on the list of modules in the middle-column panel Select the  Dependencies  tab on the right-column panel   And then for the module where you have your Java application as well as for each of the module dependencies you need   - Click     -   Jars or directories  on the far right of the right-column panel  - Navigate to the output folder of the module  e g   my module build classes main java  and click  OK   - On the new entry to the Dependencies list  on the far right  change the select box from  Compile  to  Runtime   After this  you should be able to execute the Run configuration you just created to run the simple Java application   One thing to note is that  for my particular  quite involved  Android Studio project set-up  I have to manually build the project with gradle  from outside Android Studio in order to get my simple Java Application classes to build  before I run the application - I think this is because the Run configuration of type  Application  is not triggering the corresponding Gradle build   Finally  this was done on Android Studio 0 4 0   I hope others find it useful  I also hope Google comes around to supporting this functionality soon

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It works perfect if you do File Open    and then select pom xml file   Be sure to change the dropdown at the top-left of the sidebar that says  Android  to  Project  to see all your files   Also I think it helps if the folder your pom xml file is in a folder called  app     Disclaimer  My java project was generated by Google App Engine

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Here s exactly what the setup looks like     Edit Configurations         Application

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on Android Studio 4 0 and above  you will get an option readily on the IDE a green run icon to run the related main   class

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With Android Studio 0 6 1   and possibly earlier  you can easily develop standard Java  non-Android  apps   This method has been tested on 0 8 2   Start by creating a vanilla Android Phone app  using File   New Project   Then add a Java Library module to hold your Java Application code    Choose  Java Library  even if you re building an application    You ll find you can build and run Java apps with main   methods  Swing apps etc   You ll want to delete the auto-generated Android  app  module  which you re not using   Go to File -  Project Structure  and delete it  select the  app  module in the box on the left  and click the  minus  icon above the box     Now when you reopen File -  Project Structure -  Project  you ll see options for selecting the project SDK and language level  plus a bunch of other options that were previously hidden   You can go ahead and delete the  app  module from the disk   In 0 6 1 you could avoid creating the android module in the first place    Go to File   New Project    Fill in your application name   On the  form factors  selection page  where you state your minimum Android SDK  deselect the Mobile checkbox  and proceed with creating your project   Once the project is created  go to File -  Project Structure -  Project  and set your JDK as the  Project SDK    Add a Java Library module to hold your application code as above

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Tested on Android Studio 0 8 6 - 3 5  Using this method you can have Java modules and Android modules in the same project and also have the ability to compile and run Java modules as stand alone Java projects    Open your Android project in Android Studio  If you do not have one  create one  Click File   New Module  Select Java Library and click Next  Fill in the package name  etc and click Finish  You should now see a Java module inside your Android project  Add your code to the Java module you ve just created  Click on the drop down to the left of the run button  Click Edit Configurations    In the new window  click on the plus sign at the top left of the window and select Application A new application configuration should appear  enter in the details such as your main class and classpath of your module  Click OK    Now if you click run  this should compile and run your Java module   If you get the error Error  Could not find or load main class     just enter your main class  as you ve done in step 7  again even if the field is already filled in  Click Apply and then click Ok   My usage case  My Android app relies on some precomputed files to function  These precomputed files are generated by some Java code  Since these two things go hand in hand  it makes the most sense to have both of these modules in the same project   NEW - How to enable Kotlin in your standalone project  If you want to enable Kotlin inside your standalone project  do the following    Continuing from the last step above  add the following code to your project level build gradle  lines to add are denoted by        buildscript        gt  gt  gt  ext kotlin version    1 2 51      repositories           google           jcenter             dependencies           classpath  com android tools build gradle 3 1 3           gt  gt  gt  classpath  org jetbrains kotlin kotlin-gradle-plugin  kotlin version              NOTE  Do not place your application dependencies here  they belong            in the individual module build gradle files              Add the following code to your module level build gradle  lines to add are denoted by        apply plugin   java-library   gt  gt  gt  apply plugin   kotlin   dependencies       implementation fileTree dir   libs   include      jar         gt  gt  gt  implementation  org jetbrains kotlin kotlin-stdlib-jdk7  kotlin version       gt  gt  gt  runtimeClasspath files compileKotlin destinationDir         Bonus step  Convert your main function to Kotlin  Simply change your main class to   object Main                JvmStatic     fun main args  Array lt String gt                do something

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Easy way to run a java program in Android Studio would be   Create a java Class says  quot Test java quot  in Android Studio   Write your code eg  a Hello World program to test   Right-click on the Java class and     select the option Run  Test main     or  press CTRL   SHIFT   F10  on windows  or control   R  on Mac   There you have your Java code running below

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To run a java file in Android ensure your class has the main method  In Android Studio 3 5 just right click inside the file and select  Run  Filename main     or click on  Run  on the menu and select  Run Filename  from the resulting drop-down menu

[android-studio] Can Android Studio be used to run standard Java projects?

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