Exercise : File Scanner declaration syntax

Which of the following choices is the correct syntax for declaring a Scanner to read the file example.txt in the current directory ?

1. Scanner input = new Scanner("C:\example.txt");
2. Scanner input = new Scanner(new File("example.txt"));
3. Scanner input = new File("example.txt");
4. File input = new Scanner("/example.txt");
5. Scanner input = new Scanner("C:/example.txt");