FAQ: How To Return More Than One Value In Java?

Can you return multiple values in Java?

You can return only one value in Java. If needed you can return multiple values using array or an object.

How do you return more than one value?

Returning multiple values Using pointers: Pass the argument with their address and make changes in their value using pointer. So that the values get changed into the original argument. Returning multiple values using structures: As the structure is a user-defined datatype.

How can I return 3 values in Java?

You can return an object of a Class in Java. If you are returning more than 1 value that are related, then it makes sense to encapsulate them into a class and then return an object of that class. If you want to return unrelated values, then you can use Java’s built-in container classes like Map, List, Set etc.

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How can I return two values from a string in Java?

String [] arr = new String [2]; arr[0] = ans1; arr[1] = ans2; return arr; where we create a length 2 String array, assign the first value to ans1 and the second to ans2 and then return that array. return new String [] { ans1, ans2 };

Can we return an array in Java?

We can return an array in Java from a method in Java. Here we have a method createArray() from which we create an array dynamically by taking values from the user and return the created array.

How can I return multiple values from a different function in Java?

In case you like to return multiples values of different types, the best option is returning a custom class. In case the values you want to return aren’t all the same type, returning a Map will fit well. And finally, you could produce a Pair if you only need to return two values.

Can return statement return multiple values?

Even though a function can return only one value but that value can be of pointer type. If we want the function to return multiple values of same data types, we could return the pointer to array of that data types. We can also make the function return multiple values by using the arguments of the function.

Can a function return multiple values How?

We can return more than one values from a function by using the method called “call by address”, or “call by reference”. In the invoker function, we will use two variables to store the results, and the function will take pointer type data. So we have to pass the address of the data.

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How does fork return two values?

The fork function returns 0 to the child process that was created and returns the childs ID to the parent process. The two seperate processes are each returned a single value. So think of it more as one return being called on each thread process.

How do you call a return method in Java?

return is a reserved keyword in Java i.e, we can’t use it as an identifier. It is used to exit from a method, with or without a value. return can be used with methods in two ways: Methods returning a value: For methods that define a return type, return statement must be immediately followed by return value.

Can you return nothing in Java?

In Java, a null value can be assigned to an object reference of any type to indicate that it points to nothing. In the absence of a constructor, the getArticles() and getName() methods will return a null reference.

How do you return a pair in Java?

  1. Pair (K key, V value): Creates a new pair.
  2. boolean equals(): It is used to compare two pair objects.
  3. String toString(): This method will return the String representation of the Pair.
  4. K getKey(): It returns key for the pair.
  5. V getValue(): It returns value for the pair.

Can a method have 2 return types?

No, you don’t have two return types. It’s a generic method you are seeing.

How do you access values in an ArrayList?

The get () method of the ArrayList class accepts an integer representing the index value and, returns the element of the current ArrayList object at the specified index. Therefore, if you pass 0 to this method you can get the first element of the current ArrayList and, if you pass list.

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Can you have two return statements in a function Java?

3 Answers. Multiple return statements is not good or bad in itself. In this case, you could store conditional statements in a List and iterate on it to apply each rule.

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