Deleting first character in a string- getting rid the the front $ value sign

samuelnsweeney

Hello All,

I know in python its as simple as the syntax String[1:] etc.

But I can not seem to find as simple as a way in java. I am wanting to loop through a series of dollar values and just get rid the the dollar sign to start using the values as ints to manipulate.

Thanks, Sam

koogs

java substring.

http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#substring(int)

samuelnsweeney

Beautiful- exactly what I was after. That would be a similar idea for getting rid of any instances of a comma for example between numbers?

Sam

jeremydouglass

@samuelnsweeney -- There are many ways to filter specific characters from a string, but if you are only going to remove a single character and of the strings are reasonably small then you could just split() and join() using the Processing built-ins:

// remove commas from strings
String num;
String[] tmp;
num = "100,000,000";
println(num);
tmp = split(num, ',');  // processing.org/reference/split_.html
num = join(tmp, "");    // processing.org/reference/join_.html
println(num);

Concisely:

String num = "100,000,000";
num = join(split(num, ','),"");
println(num);    // prints: 100000000

samuelnsweeney

That sounds like a good way, thankyou Jeremy. The string document above shows what look like more complex ways like replace. etc

Sam