How to get int out of string in Java

Question

Hello everyone. I need to know, how can I get an integer value saved in a string into an integer variable.
Here is a simple example:
Consider that input is "I am <num> years old" and I need to get the num value.

int Age=0;
Scaner scn = new Scanner(System.in);
String input=scn.nextLine();
String [] text=input.split(" ");
Age=text[2]; <-- This is what doesn't work.

Casting doesn't work.

Answer 1

Use Integer.parseInt("YourString");

Answer 2

Be aware that parseInt throws an exception if your string is not indeed and integer so it is good to put it in a try block, especially if there is a chance the string could not contain an int

try{
int a = Integer.parseInt("YourString");
//everything else you want to do with a
}
catch (NumberFormatException ex){
System.out.print("The string is not an integer (or whatever)");
}

Answer 3

Thanks a lot. 😃

Answer 4

Donna
Thank you too, but why is there the for cycle? It works fine without it too.😕