Suppose we want to create a utility class that contains methods for performing mathematical operations. Following snippet is used to call add method with input 1 and 2. It can be represented as thodName (arguments). The class name followed by the method name and passing the argument is enough for accessing any instance of the class. Now that we've discussed what static methods are and why you might use them, let's look at some examples to see how they work in practice. In the above example, add is a static method that takes two integers as arguments. The static method in java is a method which resides in the class and can be accessed even if no object is created or say there is no instantiation done.
private static final MapSingletons are often used for managing resources such as database connections or thread pools. Collection of helper methods for calling methods and accessing fields reflectively. A singleton is a class that can only have one instance. Utility classes are often used for mathematical operations, string manipulation, and file input/output.įinally, static methods can be used to implement the singleton design pattern. Second, static methods can be used to create utility classes, which are classes that contain only static methods. First, static methods can be called without creating an object of the class, which can be convenient if you only need to call the method once or if you don't need to store any data in an object after calling the method. Method method m圜lass.getMethod ('getInstance', null) Object object method. I had a super class that had a static method and I wanted to.
Java reflection call static method code#
For me the following two pieces of code both work correctly for static method and print out the returned value. While coding Java for one of my projects, I came across a weird requirement.
There are several reasons why you might want to use static methods. The second change is preferable IMHO, but optional. As you can see, static methods are called using the class name followed by the method name with no need to create an object of the class.
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