java2s.com
Programming Tutorials and Source Code Examples
Last scanned Aug 24, 2026, 1:23 PM
Overall score
Great
Summary
Programming Tutorials and Source Code Examples. This website uses Apache hosted on DigitalOcean. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Multiple H1 headings found.
Programming Tutorials and Source Code Examples
- United States
- Hosted on DigitalOcean
Top issues to fix
7 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
124 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Programming Tutorials and Source Code Examples
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Programming Tutorials and Source Code Examples
- Description
- Programming Tutorials and Source Code Examples
- Canonical
- http://www.java2s.com
- Language
- en
- Charset
- UTF-8
- Viewport
- width=900
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- DigitalOcean
- CDN provider
- —
- IP address
- 159.223.210.207
- ASN
- AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- java2s.com
- Valid from
- Aug 21, 2026
- Valid to
- Nov 19, 2026
- Days until expiry
- 86
- SAN domains
- java2s.com, www.java2s.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 13 · H2 0 · H3 24
Links
225 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
7 scripts · 2 stylesheets
JS / CSS size
139 KB · 132 KB
Page size
25.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 1
- sitemap.xml
- Found
- URLs in sitemap
- 21293
SEO issues
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://java2s.com
- Final URL
- https://java2s.com
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 124 ms
- HTML size
- 25.0 KB
- Redirect chain
- https://java2s.com
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Frequently asked questions
- What technology does java2s.com use?
- java2s.com is built with Bootstrap, jQuery, Apache.
- Is java2s.com secure (HTTPS)?
- Yes. java2s.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 19, 2026.
- Who hosts java2s.com?
- java2s.com is hosted on DigitalOcean.
- What is java2s.com's SEO score?
- java2s.com scored 80/100 for SEO in the latest analysis (great).
- What is java2s.com's overall website score?
- java2s.com has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card