File Scanner usage

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import java.io.*;	// for File
import java.util.*;	// for Scanner

public class FileScannerDemo {
   public static void main(String[] args) throws FileNotFoundException {
      File f = new File("test.txt");
      Scanner input = new Scanner(f);	
   }
}	

• The File class is in the java.io package
• To read from a file, construct a Scanner object on that file's File object
• Any method that constructs a Scanner object on a File needs to acknowledge the possibility of a FileNotFoundException
• The throws clause is like a legal waiver: "I know bad things will happen if the file is missing but I accept that"