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Garbage Collection in Java is a process by which the programs perform memory management automatically. Java collection means a single unit of objects. Programs that uses Generics has got many benefits over non-generic code. Collection and Collections are widely used in Java programming. It is a general-purpose programming language intended to let application developers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. The Java Collections Framework provides the following benefits: Reduces programming effort: By providing useful data structures and algorithms, the Collections Framework frees you to concentrate on the important parts of your program rather than on the low-level "plumbing" required to make it work. At last, we see Collection framework in Java: Methods and Iterator Interface in Java. Garbage collection is the technique used in Java to deallocate or remove unreachable objects and unused memory. 2. An array is initialized with an predefined size during instantiation. Here, you will learn what collections are and how they can make your job easier and programs better. synchronizedMap() returns a synchronized (thread-safe) map backed by the specified map and we will use one more API synchronizedList(). lists, maps, stacks etc. The Java Collections Framework provides common data structures implementations which are enough for general-purpose such as list, set, map, queue, tree, etc. The Java Collections API provide Java developers with a set of classes and interfaces that makes it easier to work with collections of objects, e.g. If you have any of below questions then you are at right place: Java + Java Collections; Series; I just announced the new Learn Spring course, focused on the fundamentals of Spring 5 and Spring Boot 2: >> CHECK OUT THE COURSE. names.removeIf(e -> e.startsWith("A")); It's important to note that contrary to the Iterator approach, removeIf performs similarly well in both LinkedList and ArrayList. Eventually, some objects will no longer be needed. Java Collection Framework is one of the most used section. The collection interfaces declare the operations that can be performed on each type of collection. From the name itself, we can understand that Garbage Collection deals with tracking and deleting the garbage from the memory area. The garbage collector is a daemon thread that frees memory during runtime. The Java Iterable interface represents a collection of objects which is iterable - meaning which can be iterated. Interface java.util.Collection All Known Subinterfaces: BeanContext, BeanContextServices, List, Set, SortedSet All Known Implementing Classes: AbstractCollection . The Garbage Collector(GC) finds the unused objects and deletes them to reclaim the memory. In short, Java Collections Framework is a set of reusable data structures and algorithms which are designed to free programmers from implementing data structures themselves so that they can focus on business logics. The Java Collections Framework is a fundamental and essential framework that any strong Java developer should know like the back of their hand.. A Collection in Java is defined as a group or collection of individual objects that act as a single object.. 2. As shown in the above example, the code to print each element is passed into the method. The Garbage Collection in Java that we discussed in this tutorial is automatic and the programmer need not concern himself/herself about deleting the objects or variables allocated in the program. In java “Collection” is an interface that a lot of data structure interfaces like Set, List, Queue, DeQueue , Stack extends. Code Reuse: By using Generics, one needs to write a method/class/interface only once and use for any type. There are more than 100 APIs are available for us to use at fingertips. Also, there is a keyword, called synchronized, to make them thread safe. 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