Java tutorial
//package com.java2s; // License & terms of use: http://www.unicode.org/copyright.html#License public class Main { public static int getJavaVersion() { int ver = -1; String verstr = System.getProperty("java.version"); if (verstr != null) { String[] numbers = verstr.split("\\."); try { ver = Integer.parseInt(numbers[1]); } catch (NumberFormatException e) { ver = -1; } } return ver; } }