Converting a String with spaces to an Integer in java

Would .trim work? And if so, how would I use that?

Yes, trim() will work, it will remove leading and trailing spaces from String,

int integer = Integer.parseInt(string.trim());

The string split() method works well if you have a string of multiple numbers separated by spaces.

String numbers = "1 23 456";
String[] numbersArray = numbers.split(" "); // splitting string by spaces
System.out.println(numbersArray.toString());
// output ["1","23","456"]

Then you can use Integer.parseInt() on each index of the array. Hope that helps

Use the string trim function in Java to first get a string without the spaces, then parse it...

1.) Remove spaces with trim ... String#trim

String stringWithoutSpace = string.trim();

2.) Parse the string without spaces ... Integer#parseInt

int integer = Integer.parseInt(stringWithoutSpace);

3.) Do everything above in one step ...

int integer = Integer.parseInt(string.trim());

If you using Java 11, you can use the String::strip method. For example:

int integer = Integer.parseInt(string.strip());

The strip() method is similar to trim() but uses Character.isWhitespace(int) to resolve spaces. (The Character.isWhitespace(int) method is Unicode-aware.)