How to compile code from string(with exec)

[psaulius]

Help
How to compile and run code from string(with exec)

 

[v777779]

You can use Runtime.getRuntime().exec()
For more complicated cases write sequence of string into batch file, then run it with the method above.
Linux https://stackoverflow.com/questions/10277709/how-can-i-run-linux-commands-on-an-android-device
Windows https://stackoverflow.com/questions...-multiple-commands-in-the-same-cmd-exe-window
more links https://stackoverflow.com/questions/2843250/how-to-run-terminal-command-in-android-application
https://www.mkyong.com/java/how-to-execute-shell-command-from-java/

 

[psaulius]

I do not understand, you need a simple example

 

[Deleted User]

Your question isn't that clear. Could you explain what you're trying to do?

 

[psaulius]

File Example2 text:
//////////////
import java.util.*;
public class Example2 { public static void main(String args[]) { System.out.println(1234567); } }

Main program text:
/////////////////
import java.util.*;
public class Main
{
public static void main(String[] args)
{
try{
Runtime.getRuntime().exec("/storage/emulated/0/AppProjects/MyJavaConsoleApp/src/Example2.java");}
catch (Exception e){}
}
}

//////////Do not wait, fail

 

[psaulius]

Your question isn't that clear. Could you explain what you're trying to do?

Your question isn't that clear. Could you explain what you're trying to do?

I want to run the program from another program with a parsed code, try to create ide

 

[Deleted User]

Runtime.getRuntime().exec("/storage/emulated/0/AppProjects/MyJavaConsoleApp/src/Example2.java");

That's not going to work. I think you misunderstand how to use the exec() method of Runtime. The string parameter is the path to an executable (binary) file within the filesystem.
Simply specifying a Java source file won't work and would probably generate an exception.

Plus you have a basic misunderstanding of how an Android app is constructed, because you never define a main() method. Android apps run as a thread of execution, within the Dalvik JVM runtime framework. The entry point for any app is via the onCreate() method.

 

[psaulius]

That's not going to work. I think you misunderstand how to use the exec() method of Runtime. The string parameter is the path to an executable (binary) file within the filesystem.
Simply specifying a Java source file won't work and would probably generate an exception.

Plus you have a basic misunderstanding of how an Android app is constructed, because you never define a main() method. Android apps run as a thread of execution, within the Dalvik JVM runtime framework. The entry point for any app is via the onCreate() method.

How to use Dalvik for compiling, building, runing program.?