Java
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Tomcat JDBC Pool – Connection Leak – Catch the Culprit
Database connection leaks are something that can stay hidden unless paid specific attention and would come to the surface at…
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Apache Derby Database JVM Security Policy
Abstract I have already posted a number of blogs about Derby: Derby Database Backup Multiple Derby Network Servers on the…
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Spring Boot Remove Embedded Tomcat Server, Enable Jetty Server
A quick guide to exclude embedded tomcat server in spring boot application and adding Jetty Server Instead. Configuration to remove…
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Java 8 Stream Intermediate Operations (Methods) Examples
A Complete guide to Java 8 Streams intermediate operations. List of all built-in Stream API Intermediate operations(methods) with examples. 1.…
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Custom HTTP Header with the HttpClient
A quick guide to set custom HTTP Header in Apache HTTPClient request. On HttpRequest call setHeader() method to set HttpHeaders…
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Java UnknownHostException – Invalid Hostname for Server – How to Fix It?
A quick guide to An UnknownHostException and it is thrown if a java.net.UnknownHostException occurs while creating a connection to the…
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HttpClient 4 API – Get the Status Code -getStatusLine().getStatusCode() Example
A quick guide to get the status code in the HttpClient API. getStatusLine().getStatusCode() Example and related errors. 1. Introduction In…
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Encrypt with OpenSSL, Decrypt with Java, Using OpenSSL RSA Public Private Keys
Abstract In 2017 I wrote a 3 part series on choosing the best hashing and encryption algorithms. While doing the…
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How to process images and videos within Java JVM
Processing of images – let alone videos – within the Java JVM has always been a challenging task. ImageIO classes have come…
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