How to Use Batch in JDBC to Insert huge data

Prefer using plain JDBC for huge data migration. One record at a time is too slow,…

Interview Question: Comparable vs Comparator

most asked interview question, Comparable vs Comparator. Both beginners and experienced persons get this question in…

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Iterating over List: Basic to Advance to Stream API

how you can iterate over a List, be it ArrayList, LinkedList or any other. Basic loop…

Get Ready to Deep Dive in Java Memory Management: Garbage Collector

In Java memory management, a Garbage collector is the process by which Java programs perform automatic…

Get Ready to Deep Dive in Java Memory Management: Structure of JVM Memory

Memory management is the process of allocation and de-allocation of objects from memory, it's done automatically…

Most Loved Interview Question: How HashMap Works in Java

An interview cant be complete without this question. HashMap working contains most of the concept we…

Reduce NullPointerExceptions with Optional in Java 8 & Beyond

"Billion Dollar Mistake?". NullPointerException is the most common and frequently appeared error compared to others, especially…

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The Interface of Java and the Many Faces of It

Interface is an integral part of java and has become so powerful over the years, that…