How to return multiple values?
There are a few different ways to return multiple values from a method in Java:
Use an array: You can create an array of the values you want to return, and return the array. The calling method can then access the individual elements of the array to get the return values.
Use a Java object: You can create a Java object that contains the values you want to return as instance variables. The calling method can then access these instance variables to get the return values.
Use a Java 8
java.util.Optional
object: If you are using Java 8 or later, you can use theOptional
class to return multiple values. TheOptional
class is used to represent a value that may or may not be present, and it can be used to wrap the values you want to return. The calling method can then use theOptional
object to retrieve the values.Use a Java tuple: There are a few libraries available that provide tuple classes for Java, which allow you to group multiple values together and return them as a single object. The calling method can then access the individual elements of the tuple to get the return values.
It's worth noting that returning multiple values in this way can make your code more difficult to read and understand, and it is generally better to use a more structured approach such as using an object or a tuple if you need to return multiple values.