The difference between static methods and non-static methods in java

Static methods

Like static member variables, they belong to the class itself. They are loaded into memory when the class is loaded and are not automatically executed. Destroyed, it will remain in memory until the JVM is shut down.

Non-static method

Also known as instantiation method, it belongs to the instance object. Memory will be allocated after instantiation. It must be referenced through an instance of the class. When the instance object After being recycled by the JVM, it also disappears.

Difference:

First of all, the essential difference between the two is: static methods are methods modified with static in the class and have been loaded when the class is defined. and distribution. Non-static methods are methods without the static keyword and do not occupy memory when the class is defined. Memory is allocated only when the class is instantiated into an object and the object calls the method.

Secondly, only static members or static methods can be called in static methods, and non-static methods or non-static members cannot be called. Non-static methods can call both static members or methods and other non-static members or methods. method.

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