Can a Java method return more than one type?
A method cannot return more than one type. The signature of a method contains the return type or void if the method doesn’t return anything.
How can I return two data types in Java?
Java doesn’t support multi-value returns but returning multiple values with different datatype in Java is possible via creating a class. In above case Test and encapsulating encapsulating all returned types into that class in above case a double and an integer value is to be returned.
Can a method return two data types?
No you cannot. You can only return the type you mentioned in method signature.
Can a function return different data types?
So there are some practices you might be violating if your function can return multiple types. Knowing them will help you determine if your particular function should return multiple types anyway. Actually, it’s not very uncommon at all to return different types even in a statically typed language.
How do you return a value from one method to another in Java?
You have to set the returned value to a variable, otherwise it is lost and you are retrieving the value of “x” in your main method. Do this instead to capture the return value. If you only want to see the returned value and not store it, you can even put the function call inside the System.
Can we return a string in Java?
There’s no problem with returning Strings in this manner. In Java, a String is a reference to an immutable object.
Can we return an array in Java?
We can return an array in Java. Below is a Java program to demonstrate the same. We can use Pair in Java to return two values. We can encapsulate all returned types into a class and then return an object of that class.
Is pair immutable in Java?
An immutable pair consisting of two Object elements. Although the implementation is immutable, there is no restriction on the objects that may be stored. If mutable objects are stored in the pair, then the pair itself effectively becomes mutable.
|Modifier and Type||Field and Description|
|R||right Right object|
Can a method return an array?
A method can return a reference to an array. The return type of a method must be declared as an array of the correct data type.
How many values can a method return?
Let us take a deeper look… Even though a function can return only one value but that value can be of pointer type.
What should return type of method where there is no return value?
If a method does not return a value, it must be declared to return void .
Should a function always return same type?
SRE_Match and NoneType are instances of object, so in a broad sense they are of the same type. So the rule that “functions should always return only one type” is rather meaningless. Having said that, there is a beautiful simplicity to functions that return objects which all share the same properties.
What are the arguments given in the function call called?
The term parameter (sometimes called formal parameter) is often used to refer to the variable as found in the function definition, while argument (sometimes called actual parameter) refers to the actual input supplied at function call.
What are different return types in Java?
A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing). The type of data returned by a method must be compatible with the return type specified by the method. For instance, if the return type of some method is boolean, we can not return an integer.