What is a JAR file, and what is an object in Java?
💡 Model Answer
A JAR (Java ARchive) file is a packaged archive that bundles Java class files, metadata, and resources into a single file for distribution and deployment. It is essentially a ZIP file with a specific structure and a manifest file that can specify the main class. An object in Java is an instance of a class that holds state (fields) and behavior (methods). Objects are created at runtime using the new keyword, and they are managed by the Java Virtual Machine’s garbage collector. Together, JAR files enable modular distribution of Java code, while objects are the fundamental units of execution within that code.
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