Multithreading means multiple threads and is considered one of the most important features of Java. As the name suggests, it is the ability of a CPU to execute multiple threads independently at the same time but SHARE the PROCESS RESOURCES simultaneously. Its MAIN purpose is to provide simultaneous execution of multiple threads to utilize the CPU time as much as possible. It is a Java feature where one can subdivide the specific program into two or more threads to make the execution of the program FAST and easy.