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Core Java
Java Custom Linked List Implementation
Arrays store elements in a contiguous memory block, whereas a linked list spreads its nodes across different memory locations. Each…
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Software Development
Liquibase Preconditions Example
Liquibase is a popular open-source database schema change management tool that allows developers to track, manage, and deploy database changes…
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Core Java
Java Execute JAR File Example
A JAR (Java Archive) file is a packaged collection of Java classes and resources that can be executed as a…
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Core Java
Fix ClassCastException Ljava.lang.Object to Ljava.lang.Integer
In Java, the ClassCastException occurs when we attempt to cast an object to a subclass of which it is not…
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Core Java
Java ServerSocket Simple HTTP Server Example
An HTTP server is responsible for serving resources to a requesting client. While Java offers several production-grade web servers, understanding…
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Core Java
Java JDBC Execute Multiple Statements Example
When working with databases in Java, it’s common to execute multiple SQL statements in a single execution. This improves efficiency…
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Core Java
Adding a Non-Null Value to a Map in Java
When working with Java’s Map data structure, it is common to check whether a value is null before inserting it…
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Core Java
Comparing isA() and anyObject() Matchers in EasyMock
EasyMock is a widely used Java framework for creating mock objects in unit tests. It provides various matchers to define…
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Core Java
Java Switch Greater Than Or Equal Condition Example
The switch statement in Java is a control flow statement that handles multiple conditions efficiently. However, it is typically used…
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