// Build LArray
LIntArrayBuilder b = new LIntArrayBuilder();
for(int i=0; i<10; i += 3)
b.append(i);
LIntArray lb = b.result(); // LArray(0, 3, 6, 9)
System.out.println(lb.mkString(", "));
// Save to a file
File file = l.saveTo(new File("target/larray.tmp"));
file.deleteOnExit();