[Scala] Java Execution Shell command

Methods

Both the Processbuilder.start () and the Runtime.exec () methods are used to create an operating system process (to perform command-line operations) and return an instance of the process subclass that is used to control the status of processes and obtain relevant information.

• The Runtime.exec(String) method takes a single command string, the IT splits into a command and a sequence of arguments.

     Process process = Runtime.getruntime (). EXEC ("C:\DoStuff.exe-arg1-arg2");

• The ProcessBuilder constructor takes a (varargs) array of strings. The first string is the command name and the rest of them is the arguments.

New Processbuilder ("C:\DoStuff.exe", "-arg1", "-arg2"); // or alternatively list<string> params = java.util.Arrays.asList ("C:\DoStuff.exe", "-arg1", "-arg2"new  = Builder.start ()

Examples

def execute = {context = =val Command=Shell (context) var result:try[string]=NULLvar process:process=NULL      Try{Val Builder=NewProcessbuilder (scala.collection.JavaConversions.seqAsJavaList (command)) Builder.redirectoutput ( ProcessBuilder.Redirect.INHERIT) Builder.redirecterror (ProcessBuilder.Redirect.INHERIT) process=Builder.start () process.waitfor () Val ExitCode=Process.exitvalue ()if(ExitCode! = 0) {result= Failure (NewIllegalmonitorstateexception (S "Exit Code of process is no zero, but: $exitCode"))        }Else{result= Success (S "Successfully executed command $command")        }      }Catch{         CaseE:exception = result =Failure (e)}finally {        if(process!=NULL) {Process.destroy ()}} result}

[Scala] Java Execution Shell command