Java tutorial
//package com.java2s; import java.util.Locale; public class Main { private static final Float CMS_PER_INCH = 2.54f; public static String cmsToInches(String cmsAsString) { try { float cms = Float.parseFloat(cmsAsString); float inches = cms / CMS_PER_INCH; return String.format(Locale.US, "%.1f \"", inches); } catch (NumberFormatException e) { /*- not a number, text is shown without parsing it */ return cmsAsString; } } }