Files
To work with files, you must use the type java.io.File. Also, the program includes support for the library apache.commons.io, which will simplify the work with files.
var File = Java.type('java.io.File');
var FileUtils = Java.type('org.apache.commons.io.FileUtils');
var myFile = new File('helloWorld.txt');
system.println('Is file exist? - ' + myFile.exists());
system.println('');
if(!myFile.exists()){
FileUtils.write(myFile,'Hello world','UTF-8');
}
system.println('file content:');
system.println(FileUtils.readFileToString(myFile,'UTF-8'));