[grimpirate]

I'm work with JDK 7 and attempting to make use of the new input/output. Here's the code:

import java.nio.file.Path;
import java.nio.file.Paths;

class MimeReader{
  public static void main(String[] args){
    if(args.length == 2){
      Path keyPath = Paths.get(args[0]).toRealPath(true);
      Path valuePath = Paths.get(args[1]).toRealPath(true);
    }else{
      System.out.println("Usage: MimeReader KEY VALUE");
    }
  }
}

And the following error is what the java compiler produces:

Quote

MimeReader.java:7: error: method toRealPath in interface Path cannot be applied to given types;
Path keyPath = Paths.get(args[0]).toRealPath(true);

required: LinkOption[]
found: boolean
reason: argument type boolean does not conform to vararg element type LinkOption

It also reproduces the same error for line 8. What I'm understanding here is that somehow it's interpreting a boolean value when in fact its seeking out a LinkOption[] value. However, if I understand the javadocs, Paths.get() method returns a Path, and I can use the toRealPath method to return another Path. So what am I missing here?

[pbl]

arg[0] and arg[1] are String
the class String does not have a method toRealPath(boolean)

In which class did you find the method toRealPath() ?

[grimpirate]

This is the relevant javadoc:
http://download.orac....LinkOption...)

[macosxnerd101]

The toRealPath() method accepts a LinkOption[] param, not a boolean.

Path.get(args[0].toRealPath(new LinkOption[]{..LinkOption elements..});

[pbl]

The relevant Javadoc says in the Path interface

Path toRealPath(LinkOption... options)

So any class that implements Path should provide a method toRealPath(LinkOption...) that returns a Path
As far as I know, unless they changed it in 1.7, String does not implement Path

[macosxnerd101]

Has nothing to do with String, except that Paths.get() accepts a String param.

[pbl]

macosxnerd101, on 21 August 2011 - 12:15 AM, said:

Has nothing to do with String, except that Paths.get() accepts a String param.

Guess I will have to read 1.7 release notes

[grimpirate]

Hmm... somehow I glossed over that LinkOption parameter. However, why do the Java tutorials then say that a boolean is an acceptable value to pass to the function? Grotesque error?
http://download.orac...io/pathOps.html

@macosxnerd101: I understand the example you've given but how would I know what LinkOption elements to provide?

This post has been edited by grimpirate: 21 August 2011 - 07:56 AM