get Browser from user agent - Java Network

Java examples for Network:User Agent

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Description

get Browser from user agent

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String userAgent = "java2s.com";
        System.out.println(getBrowser(userAgent));
    }/* w w w.j  a v  a  2  s  .  co m*/

    public static String getBrowser(String userAgent) {
        String browser = "";
        String version = "";
        Integer startLen = 0;
        Integer endLen = 0;
        if (userAgent.toLowerCase().indexOf("msie") != -1) {
            browser = "IE";
            startLen = userAgent.toLowerCase().indexOf("msie");
            endLen = userAgent.indexOf(";", startLen);
            version = userAgent.substring(startLen + 5, endLen);
        } else if (userAgent.toLowerCase().indexOf("trident/7") != -1) {
            browser = "IE";
            startLen = userAgent.toLowerCase().indexOf("rv:") + 3;
            endLen = userAgent.indexOf(")", startLen);
            version = userAgent.substring(startLen, endLen);
        } else if (userAgent.toLowerCase().indexOf("chrome") != -1) {
            browser = "CHROME";
            startLen = userAgent.toLowerCase().indexOf("chrome") + 7;
            endLen = userAgent.indexOf(" ", startLen);
            version = userAgent.substring(startLen, endLen);
        } else if (userAgent.toLowerCase().indexOf("firefox") != -1) {
            browser = "FIREFOX";
            startLen = userAgent.toLowerCase().indexOf("firefox") + 8;
            endLen = userAgent.length();
            version = userAgent.substring(startLen, endLen);

        } else if (userAgent.toLowerCase().indexOf("safari") != -1) {
            browser = "SAFARI";
            startLen = userAgent.toLowerCase().indexOf("version") + 8;
            endLen = userAgent.indexOf(" ", startLen);
            version = userAgent.substring(startLen, endLen);
        } else if (userAgent.toLowerCase().indexOf("opera") != -1) {
            browser = "OPERA";
            startLen = userAgent.toLowerCase().indexOf("opera") + 6;
            endLen = userAgent.length();
            version = userAgent.substring(startLen, endLen);
        } else {
            browser = "OTHER";
        }

        return browser + "_" + version;

    }
}

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