Tutorial 35 (Multiple Exceptions)

//Tutorial 35 (Multiple Exceptions)
//App.java

import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.ParseException;

public class App {

    public static void main(String[] args) {
        Test test = new Test();

        /*
        // Multiple catch blocks
        try {
            test.run();
        } catch (IOException e) {

        } catch (ParseException e) {
            System.out.println("Couldn't parse command file.");
        }
        */

        /*
        //Try Multi-catch (Java 7+ only)
        try {
            test.run();
        } catch (IOException | ParseException e) {    //this is the Try Multi Catch. It can handle multiple exceptions
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        */
        //Using polymorphisim to catch the parent of all exceptions (ie: IOException, ParseException or any child classes of exception)
        try {
            test.run();
        } catch (Exception e) { //all exceptions derive from the parent class exception: "Exception" //thus just like we're passing methods to a parameter, we could catch any exception by using a parent class here "catch (parent-class-Exception  e)"
            // TODO Auto-generated catch block
            e.printStackTrace();

        }
         // Important to catch exceptions in the right order!
        // IOException cannot come first, because it's the parent
        // of FileNotFoundException, so would catch both exceptions
        // in this case.
        try {
            test.input();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}



//---------------------------------------------------------------------------------------------------------------------------------------
//Test.java
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.ParseException;


public class Test {
    public void run() throws IOException, ParseException {

        //throw new IOException();

        throw new ParseException("Error in command list.", 2);
    }
    public void input() throws IOException, FileNotFoundException {

    }
}