How to convert a String to an int in Java? How can I convert a String to an int in Java? My String contains only numbers and I want to return the number it represents. For example, given the string "1234" the result should be the number 1234. Solution: int foo = Integer.parseInt("1234"); See the Java Documentation for more information. (If you have it in a StringBuilder (or the ancient StringBuffer), you'll need to do Integer.parseInt(myBuilderOrBuffer.toString()); instead). http://stackoverflow.com/questions/5585779/how-to-convert-a-string-to-an-int-in-java