Java Lesson 14: Abstract methods

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The main class now looks as follows: 

public class MyClass {
    public static void main(String[] args) {
        Argument argument1 = ArgumentHelper.getArgumentAsInt(0,args);
        Argument argument2 = ArgumentHelper.getArgumentAsString(1,args);
        printStuff(argument1);
        printStuff(argument2);
    }
 
    public static void printStuff(Argument data) {
        System.out.println("You specified: "+data.getValue());
    }
 
}

The helper class still looks as follows: 

public class ArgumentHelper {
    public static Argument getArgumentAsInt(int argumentNumber, String[] args) {
        int argument = Integer.valueOf(args[argumentNumber]);
        return new IntArgument(argument);
    }
 
    public static Argument getArgumentAsString(int argumentNumber, String[] args) {
        String argument = args[argumentNumber];
        StringArgument strArgument = new StringArgument();
        strArgument.setString(argument);
        return strArgument;
    }
}

The Argument class looks as follows: 

public class Argument {
}

The IntArgument class looks as follows: 

public class IntArgument extends Argument {
    private int intArgument;
    public IntArgument(int intArgument) {
        this.intArgument = intArgument;
    }
    public int getInt() {
        return intArgument;
    }
    public String getValue() {
        return String.valueOf(intArgument);
    }
}

And the StringArgument class: 

public class StringArgument extends Argument {
    private String strArgument;
    public void setString(String arg) {
        this.strArgument = arg;
    }
    public String getString() {
        return strArgument;
    }
    public String getValue() {
        return String.valueOf(strArgument);
    }
}

The program is as usual executed as: 

java MyClass 5 Hello

Your work is to modify the Argument class so the program compiles and gives the following output: 

You specified: 5
You specified: Hello
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