Читать книгу OCP Oracle Certified Professional Java SE 17 Developer Study Guide - Jeanne Boyarsky - Страница 121

Now that we've played with our objects, it is time to put them away. Luckily, the JVM takes care of that for you. Java provides a garbage collector to automatically look for objects that aren't needed anymore.

Remember, your code isn't the only process running in your Java program. Java code exists inside of a JVM, which includes numerous processes independent from your application code. One of the most important of those is a built-in garbage collector.

All Java objects are stored in your program memory's heap. The heap, which is also referred to as the free store, represents a large pool of unused memory allocated to your Java application. If your program keeps instantiating objects and leaving them on the heap, eventually it will run out of memory and crash. Oh, no! Luckily, garbage collection solves this problem. In the following sections, we look at garbage collection.