![]() Eventually, some objects are no longer needed. Over the lifetime of a Java application, new objects are created and released. When Java programs run on the JVM, objects are created on the heap, which is a portion of memory dedicated to the program. Java programs compile into bytecode that can be run on a Java Virtual Machine (JVM). Java Garbage Collection is the process by which Java programs perform automatic memory management. This eliminates the need to de-allocate memory and therefore avoids memory leaks. In Java, garbage collection happens automatically during the lifetime of a program. You can use methods like free() in C, and delete() in C++ to perform Garbage Collection. Such applications suffer from " memory leaks".Īfter a certain point, sufficient memory is not available for creation of new objects, and the entire program terminates abnormally due to OutOfMemoryErrors. The used memory of the system keeps on growing and eventually there is no memory left in the system to allocate. Sometimes, the programmer may forget to destroy useless objects, and the memory allocated to them is not released. In languages like C and C++, the programmer is responsible for both the creation and destruction of objects. ![]() Garbage Collection is the process of reclaiming the runtime unused memory by destroying the unused objects. I will also cover some of the new experimental Garbage Collectors that are available in the latest Java releases. In this article, you will learn more about the Garbage Collector, how it works, and the various types of GC available in Java and their advantages. As part of the Execution Engine component, I also briefly covered the Java Garbage Collector (GC). In my previous article, I wrote about the Java Virtual Machine (JVM) and explained its architecture.
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