import java.io.*;
import java.util.*;

/**
 * This is an example of how to handle checked exceptions. 
 *
 * @author Stephanie Taylor
 */
public class Lecture11 {

    /** Read the first character of the given file and print it out
    * This version catches the checked exceptions and prints error messages.
    *
    * @param fn, name of file
    */
    public static void doFileThing_catching( String fn ) {
        try {
            FileReader fr = new FileReader( fn );
            char[] c = new char[1];
            fr.read(c);
            System.out.println( "The first character is " + c[0] );
        }
        catch (FileNotFoundException e) {
            System.out.println( "Give up, " + fn + " doesn't exist." );
        }
        catch (IOException e) {
            System.out.println( "We had a hard time reading the first character from " + fn );
        }
    }
    
    /** Read the first character of the given file and print it out
    * This version just passes along the checked exceptions.
    *
    * @param fn, name of file
    */
    public static void doFileThing_specifying( String fn ) throws FileNotFoundException, IOException {
        FileReader fr = new FileReader( fn );
        char[] c = new char[1];
        fr.read(c);
        System.out.println( "The first character is " + c[0] );
    }

    /** Test the doFileThing methods
    */
    public static void main( String[] args ) {
        doFileThing_catching( "test.txt" );
        try { 
            doFileThing_specifying( "test.txt" );
        }
        catch (java.lang.Exception e) { ; }
    }
}