Turning Arguments into a Value.

I was just wondering how to to an argument in to a value.
For example, essentials uses the command /pay <player> <amount>
I was wandering how do i get the string <amount> an byte value.
Sorry if this is obvious, I am new the developing plugins.

 

Code:

int amount = Integer.parseInt(myString);

 

To be more specific:

Code:

byte amount = Byte.parseByte(arg1);

 

To elaborate more on the above answer:

Code:java

 
Integer value = null;
try {
    value = Integer.valueOf(args[1]);
} catch(NumberFormatException e) {
    // not a valid integer
}
 

And dont forget to null check the args variable before trying to use it

 

BillyGalbreath

Integer.valueOf() returns an Integer, while Integer.parseInt() returns and int. You should use primitives unless you specifically need the Integer class.

 

Alshain01 I know how data types work (see my exampke above?) there is no rule against using Integer over the primitive. Especially since my example declares it null instead of 0. All about personal preference.

 

Thanks guys.
So to sum up.

Code:java

byte b = Byte.parseByte(args[0]);
int i = Integer.parseInteger(args[0]);
short s = Short.parseShort(args[0]);
long l = Long.parseLong(args[0]);

 

Pretty much.

As BillyGalbreath suggested though it is a good idea to use a try-catch and catch NumberFormatException in case the player doesn't enter a valid number or value, which allows you to send them feedback instead of just letting the method crash.

 

Sure, no rule against it, but it's inefficient. Why waste processing time creating a new object, the code behind Integer.valueOf() reads like this:

return new Integer(Integer.parseInt(s));

so your calling parseInt anyway and creating an object on top of it. Why would you do that? And that doesn't even account for the size of an object vs an 32-bit int.

 

XDMAN00 Like a pro

 

Like you said, sometimes you need an Integer. I'm not arguing that you are wrong, because you're right.