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Core Java
Be Careful When Modifying Data While Using a Java Iterator
As this semester begins to wrap up, I figured I’d share a little story of how I got very, very…
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Enterprise Java
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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Enterprise Java
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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Enterprise Java
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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Core Java
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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DevOps
The High Cost of NOT Monitoring Every Business-Critical Application
Maybe you’ve been there. You’re a VP of engineering, or a product owner. There was a critical outage in one…
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Enterprise Java
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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Core Java
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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Enterprise Java
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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