How to return a method in java

How do I return a string from a method in Java?

  1. import java. util. Scanner; …
  2. public class ReverseString { …
  3. public static void main(String[] args) { …
  4. Scanner scan = new Scanner(System. in); print(“Enter string: “);
  5. String str = scan. nextLine(); …
  6. String reverseStr = reverseStringData(str); …
  7. // display result. println(“Reverse String: ” +
  8. reverseStr); }

1 мая 2020 г.

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

Returning Multiple values in Java

  1. If all returned elements are of same type.
  2. If returned elements are of different types.
  3. Using Pair (If there are only two returned values) We can use Pair in Java to return two values.
  4. If there are more than two returned values. …
  5. Returning list of Object Class.

How do you return a void method in Java?

The keyword simply pops a frame from the call stack returning the control to the line following the function call. The Java language specification says you can have return with no expression if your method returns void. It exits the function and returns nothing.

Is void a return type?

In lieu of a data type, void functions use the keyword “void.” A void function performs a task, and then control returns back to the caller–but, it does not return a value. You may or may not use the return statement, as there is no return value.

What is return type in programming?

In computer programming, the return type (or result type) defines and constrains the data type of the value returned from a subroutine or method. In many programming languages (especially statically-typed programming languages such as C, C++, Java) the return type must be explicitly specified when declaring a function.

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Can we return 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 do you return a value from one method to another in Java?

Returning Value From the Method :

  1. We can specify return type of the method as “Primitive Data Type” or “Class name”.
  2. Return Type can be “Void” means it does not return any value.
  3. Method can return a value by using “return” keyword.

How can I return 3 values 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.

What is Java void?

The void keyword specifies that a method should not have a return value.

Why do we use return 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. Methods returning a value : For methods that define a return type, return statement must be immediately followed by return value. …

Is void a return type in Java?

The void Keyword

This method is a void method, which does not return any value. Call to a void method must be a statement i.e. methodRankPoints(255.7);. It is a Java statement which ends with a semicolon as shown in the following example.

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What do void methods return?

Within the body of the method, you use the return statement to return the value. Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so.

How do you return in void?

Return from void functions in C++

  1. A void function can do return. We can simply write return statement in a void fun(). …
  2. A void fun() can return another void function.
  3. A void() can return a void value. A void() cannot return a value that can be used.

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