I wrote the following code to match whole numbers only. However, when a decimal number like 3.4 is given it matches with the number 3. Is there any way to match the whole string and otherwise reject if a number is not whole number like 3.4?
Pattern e = Pattern.compile([0-9]+);
Matcher m = e.matcher("3.4");
Your question is very confusing, but you may want to use the following to match numbers with or without decimals
Pattern e = Pattern.compile("\\d+(?:\\.\\d+)?");