Posts

All the articles I've posted.

• Dynamically Load Compiled Java Class

  21 Oct, 2009

  Dynamically load and execute compiled Java classes from byte array using a custom ClassLoader, without writing physical class files to disk. Highlights use cases like license validation, encrypted class delivery, and secure remote code execution.

• Monitor a Directory for Changes using Java

  17 Oct, 2009

  Monitoring a directory for file system changes using Java NIO.2 WatchService API introduced in JDK 7, offering a more efficient alternative to manual polling threads.

• Signing Java Objects for Secure Transfer

  13 Oct, 2009

  Use Java's SignedObject with DSA public-key cryptography to digitally sign serialized Java objects before network transfer. The signed objects are verified at the receiving end ensuring data integrity and authenticity without relying on shared secrets.

• Recover from Out of Memory Errors in Java

  10 Oct, 2009

  Proactively prevent OutOfMemoryError crashes in Java by using Apache Derby's LowMemory utility class to set memory watermarks, allowing applications to gracefully degrade rather than terminate when heap space is exhausted.

• Simple Proxy Server in Java

  26 Sep, 2009

  A Java HTTP proxy server using socket-based request-response forwarding with configurable port binding, timeout handling, and continuous listening loop architecture.

• Recover Weblogic Database Password

  20 Sep, 2009

  Recovering encrypted database passwords from WebLogic server configuration files.