Programming Tutorials

  Few things are more frustrating in Android development than an SDK integration that works perfectly on a test device running Android 8.0 but fails silently on a Pixel running Android 14. If you are integrating the Smaato SDK (or any programmatic ad network) and noticing that ad requests return "Success" but the ad container remains empty, you are likely hitting a security wall. On Android 9 (API level 28) and above, the operating system blocks  Cleartext HTTP traffic  by default. While the Smaato SDK communicates securely over HTTPS, the actual ad creatives—banners, videos, or tracking pixels—often originate from third-party Demand Side Platforms (DSPs) that still rely on unencrypted HTTP. When the WebView attempts to render these assets, the OS kills the connection. This guide details the root cause and the specific Network Security Configuration required to restore revenue flow. The Root Cause: Android's Default Security Policy Prior to Android 9 (Pie), apps could mak...

  Few things disrupt a backend engineer's day like a production log flooded with   org.xml.sax.SAXParseException: Premature end of file . This error is deceptive. It suggests a corrupted file, but in 90% of enterprise Java applications, the XML is fine. The issue usually lies in how the  InputStream  is handled, buffered, or shared across the network stack before it ever reaches the parser. If you are seeing this error in your Jakarta EE, Spring Boot, or legacy Java XML services, this guide provides the root cause analysis and the production-grade code required to fix it permanently. The Root Cause: Why Parsers Crash To fix the error, you must understand how Java XML parsers (both SAX and DOM) interact with I/O streams. When you pass an  InputStream  to  DocumentBuilder.parse()  or  SAXParser.parse() , the parser attempts to read bytes sequentially. The  Premature end of file  exception is thrown when the underlying stream returns a...