What is garbage collection in the context of Java?

By BYJU'S Exam Prep

Updated on: September 25th, 2023

  1. The operating system periodically deletes all of the Java files available on the system.
  2. When all references to an object are gone, then the memory used by the object is automatically reclaimed.
  3. Any java package imported into a program and not being used is automatically deleted.
  4. The java virtual machine (JVM) checks the output of any java program and deleted anything that does not make sense at all.

Java garbage collection is the process of releasing unused memory. There are instances when a program no longer needs a certain object, and in those cases, the object should be released. The act of collecting trash is referred to as this.

Garbage Collection in Context of Java

  • JVM performs the garbage collection process (java virtual machine). Garbage collection is accessible for unreachable and useless items.
  • The programmer doesn’t have to be concerned about dereferencing the object thanks to garbage collection. Memory leakage is decreased, and memory efficiency is increased.
  • To accomplish this, make the object reference null so that trash collection will remove it.
  • Java programs utilize the garbage collection mechanism to automatically manage their memory. By compiling Java programs to bytecode, or JVM, they can be run on the JVM.
  • When Java programs are launched on the JVM, objects are created on the heap, a portion of memory set aside for the application. Eventually, certain things will be rendered outdated. The trash collector finds these unnecessary things and removes them to free up memory.


What is garbage collection in the context of Java?

Garbage collection, as used in the context of Java, is the process of automatically reclaiming memory when all references to an object have been removed.

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