What are possible reasons for java.io.IOException: “The filename, directory name, or volume label syntax is incorrect”

Question

I am trying to copy a file using the following code:

File targetFile = new File(targetPath + File.separator + filename);
...
targetFile.createNewFile();
file         


        

Answer 1

Here is the test program I use

import java.io.File;
public class TestWrite {

    public static void main(String[] args) {
        if (args.length!=1) {
            throw new IllegalArgumentException("Expected 1 argument: dir for tmp file");
        }
        try  {
            File.createTempFile("bla",".tmp",new File(args[0]));
        } catch (Exception e) {
            System.out.println("exception:"+e);
            e.printStackTrace();
        }
    }
}