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Java2s.com Programming Tutorials and Source Code Examples

Programming Tutorials and Source Code Examples

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Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Java2s.com receives about forty thousand unique visitors and eighty thousand pageviews per day. The estimated value of java2s.com is one million USD. Each unique visitor makes about 1.79 pageviews on average.

Over the time java2s.com has been ranked as high as 4,646 in the world, while most of its traffic comes from India, where it reached as high as 2,339 position.

java2s.com is hosted by AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC, US in United States, but we recommend to move server to India, as it will speed up java2s.com page load time for the majority of their users. See the list of other websites hosted by AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC, US.

Java2s.com is registered under .COM top-level domain. Check other websites in .COM zone.

At the time of the last check (November 20, 2019) java2s.com has an invalid SSL certificate.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust java2s.com is quite a safe domain.

Mobile-Friendly test indicates that java2s.com is well optimized for mobile and tablet devices.

Global Rank
8,557
Average Load Time
1.24sec
Links In Count
2,753
Website Value
$1.1 M
Overview
Last Updated: 11/20/2019
Overall result - "java2s.com" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "java2s.com" OK.

Norton ConnectSafe evaluates java2s.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 02/04/2019
GSS "java2s.com" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "java2s.com".
"java2s.com" is not a phishing page.
"java2s.com" does not install unwanted software.
"java2s.com" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "java2s.com" OK.

McAfee assesses java2s.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze java2s.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "java2s.com" VERY GOOD.

The WOT calculates reputation of the java2s.com. This reputation system receives ratings from users and information from third-party sources, assesses the java2s.com for safety features and confirms, whether java2s.com is suitable for children.

SSL Information
WARNING! Certificate download error. Previous scan results are shown below.
Domain Unknown
Issuer Organization Unknown
Issuer Unknown
Algorithm Unknown
Valid form Unknown
Expiration Unknown
Signed No information
Additional Domains
Server Location
Scottsdale
Arizona
United States
ASN Information

ASN ID: 26496
ASN Title: AS-26496-GO-DADDY-COM-LLC - GoDaddy.com, LLC, US

Last Update: 05/30/2019

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 26496
ASName: AS-26496-GO-DADDY-COM-LLC
ASHandle: AS26496
RegDate: 2002-10-01
Updated: 2012-02-24
Ref: https://rdap.arin.net/registry/autnum/26496


OrgName: GoDaddy.com, LLC
OrgId: GODAD
Address: 14455 N Hayden Road
Address: Suite 226
City: Scottsdale
StateProv: AZ
PostalCode: 85260
Country: US
RegDate: 2007-06-01
Updated: 2014-09-10
Comment: Please send abuse complaints to abuse@godaddy.com
Ref: https://rdap.arin.net/registry/entity/GODAD

OrgNOCHandle: NOC124-ARIN
OrgNOCName: Network Operations Center
OrgNOCPhone: +1-480-505-8809
OrgNOCEmail: noc@godaddy.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC124-ARIN

OrgAbuseHandle: ABUSE51-ARIN
OrgAbuseName: Abuse Department
OrgAbusePhone: +1-480-624-2505
OrgAbuseEmail: abuse@godaddy.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE51-ARIN

OrgTechHandle: NOC124-ARIN
OrgTechName: Network Operations Center
OrgTechPhone: +1-480-505-8809
OrgTechEmail: noc@godaddy.com
OrgTechRef: https://rdap.arin.net/registry/entity/NOC124-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

HTML Metatags
Title
Programming Tutorials and Source Code Examples
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
Programming Tutorials and Source Code Examples
The description is too short. If a description is too short, the search engines may add text found elsewhere on the page. Note that search engines may show a different description from the one you have authored if they feel it may be more relevant to a user's search.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
en English
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Success, no any <img> without defined ALT attribute. Alt text is helpful to end users if they have images disabled or if the image does not properly load.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
Line 50, ...<h1>Mobile</h1>...
Line 50, ...<h1>C# /C++ /C</h1>...
Line 66, ...<h1>ASP.NET</h1>...
Line 66, ...<h1>Database</h1>...
Line 66, ...<h1>Javascript</h1>...
Line 66, ...<h1>HTML/CSS</h1>...
Line 82, ...<h1>Script</h1>...
Line 82, ...<h1>Graphics</h1>...
Line 82, ...<h1>MS-Office</h1>...
Line 82, ...<h1>XML</h1>...
Line 82, ...<h1>VB.Net</h1>...
Line 82, ...<h1>Java Q and A</h1>...
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about. Remove redundant H1 tags from the page source, so that only one H1 tag exists.
H2
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
21 H3 tag(s).
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
H5
H6
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
14.73 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Line 14, http://www.java2s.com/style/favicon.ico
default, favicon.ico
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File failed Loaded (/robots.txt)
If you don’t have a robots.txt file, then search engines will still crawl and index your website. However, you will not be able to tell search engines which pages or folders they should not crawl.
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File failed Loaded (/sitemap.xml)
Your site will benefit from having a sitemap.
WHOIS

Domain Name: JAVA2S.COM
Registry Domain ID: 134501758_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2019-08-29T16:08:01Z
Creation Date: 2004-11-07T18:49:49Z
Registry Expiry Date: 2020-11-07T18:49:49Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: NS-1297.AWSDNS-34.ORG
Name Server: NS-1843.AWSDNS-38.CO.UK
Name Server: NS-532.AWSDNS-02.NET
Name Server: NS-59.AWSDNS-07.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2019-10-01T14:27:07Z

DNS Records
HostA RecordTTL
java2s.com52.216.186.1305
HostMX RecordPriorityTTL
HostNS RecordTTL
java2s.comns-1297.awsdns-34.org172800
java2s.comns-1843.awsdns-38.co.uk172800
java2s.comns-532.awsdns-02.net172800
java2s.comns-59.awsdns-07.com172800
HostTXT RecordTTL

ns-59.awsdns-07.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

Errors
Line: 5 Column: 1 - 67
"...="utf-8"> <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'> <meta..."
Line: 9 Column: 1 - 57
"...s</title> <meta http-equiv='content-style-type' content='text/css'> <meta..."
Line: 10 Column: - 31
"...hor' content=''Demo Source and..."
Line: 10 Column: - 59
"...nd Support Ltd.'> <meta name='..."
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 46 Column: 17 - 63
"... <input type="submit" name="sa" value="Search"/> ..."
Line: 47 Column: 14 - 24
"... </fieldset> ..."
Line: 42 Column: 17 - 45
"... <label class="control-label"> ..."
Warnings
Line: 10 Column: 1 - 60
"...ext/css'> <meta name='author' content=''Demo Source and Support Ltd.'> <meta..."
Line: 42 Column: 17 - 45
"... <label class="control-label"> ..."
Line: 49 Column: 11 - 111
"... <script type="text/javascript" src="http://www.google.com/cse/brand?form=cse-search-box&amp;lang=en"></scri..."
Line: 51 Column: 1 - 31
"...br/><br/> <script type="text/javascript"><!-- g..."
Line: 65 Column: 1 - 68
"...</script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></scri..."
Line: 67 Column: 1 - 31
"...br/><br/> <script type="text/javascript"><!-- g..."
Line: 81 Column: 1 - 68
"...</script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></scri..."

Last tested: 06/13/2016

Desktop
Desktop Speed
76%
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 194.7KiB (75% reduction).

Compressing http://java2s.com/style/bootstrap.min.css could save 89.2KiB (83% reduction).
Compressing http://java2s.com/style/jquery-1.11.0.js could save 61.5KiB (65% reduction).
Compressing http://java2s.com/style/bootstrap.min.js could save 22.7KiB (73% reduction).
Compressing http://java2s.com/ could save 21.3KiB (84% reduction).

Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

http://java2s.com/style/jquery-1.11.0.js
http://java2s.com/style/bootstrap.min.js
http://www.google.com/cse/brand?form=cse-search-box&lang=en

Optimize CSS Delivery of the following:

http://java2s.com/style/bootstrap.min.css
http://java2s.com/style/longTutorial.css

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:

http://java2s.com/style/bootstrap.min.css (expiration not specified)
http://java2s.com/style/bootstrap.min.js (expiration not specified)
http://java2s.com/style/jquery-1.11.0.js (expiration not specified)
http://java2s.com/style/longTutorial.css (expiration not specified)
http://pagead2.googlesyndication.com/pagead/show_ads.js (60 minutes)
https://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 1.4KiB (69% reduction).

Losslessly compressing https://www.google.com/cse/static/en/google_custom_search_watermark.gif could save 1.4KiB (69% reduction).

Desktop Resource Breakdown
Total Resources17
Number of Hosts5
Static Resources11
JavaScript Resources8
CSS Resources2

Last tested: 06/13/2016

Mobile
Mobile Usability
80%
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="http://www.jav…cala/index.htm">Scala Tutorial</a> and 169 others are close to other tap targets final.
The tap target <span class="rhfavicon"></span> is close to 1 other tap targets.
The tap target <span class="rhfavicon"></span> is close to 2 other tap targets.

Mobile Speed
65%
Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

http://java2s.com/style/jquery-1.11.0.js
http://java2s.com/style/bootstrap.min.js
http://www.google.com/cse/brand?form=cse-search-box&lang=en

Optimize CSS Delivery of the following:

http://java2s.com/style/bootstrap.min.css
http://java2s.com/style/longTutorial.css

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 194.7KiB (75% reduction).

Compressing http://java2s.com/style/bootstrap.min.css could save 89.2KiB (83% reduction).
Compressing http://java2s.com/style/jquery-1.11.0.js could save 61.5KiB (65% reduction).
Compressing http://java2s.com/style/bootstrap.min.js could save 22.7KiB (73% reduction).
Compressing http://java2s.com/ could save 21.3KiB (84% reduction).

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:

http://java2s.com/style/bootstrap.min.css (expiration not specified)
http://java2s.com/style/bootstrap.min.js (expiration not specified)
http://java2s.com/style/jquery-1.11.0.js (expiration not specified)
http://java2s.com/style/longTutorial.css (expiration not specified)
http://pagead2.googlesyndication.com/pagead/show_ads.js (60 minutes)
https://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 1.4KiB (69% reduction).

Losslessly compressing https://www.google.com/cse/static/en/google_custom_search_watermark.gif could save 1.4KiB (69% reduction).

Mobile Resource Breakdown
Total Resources34
Number of Hosts10
Static Resources22
JavaScript Resources11
CSS Resources3
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