How to get return value from method in java

Is it possible to return two values from a method in Java?

As per Java Language Specification, the methods in Java can return only one value at a time. So returning multiple values from a method is theoretically not possible in Java.

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

  1. public static void main(String[] args) { // take input. Scanner scan = new Scanner(System. …
  2. String str = scan. nextLine(); // reverse the string. …
  3. // display result string. println( “Reverse String: ” + …
  4. String rev = new String(); for(int i=s. …
  5. // On every iteration new string. // object will be created. …
  6. } return rev;

1 мая 2020 г.

Can main method return a value in Java?

Java’s main method is built to accept only void as return type and void method has no return value. Without having declared main method static , your program will successfully compile but won’t execute and report error at run time. … The keyword void simply tells the compiler that main does not return a value.

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.

Can a method return two values?

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

Can a for loop return a value?

A return statement is NOT for returning a value from a loop. If you want to preserve a value from a loop, that value needs to be stored in a variable that was created before the loop was started. … Just remove the return a; statement and you should be able to do what you are trying to accomplish.

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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.

What is the return type of the main () method?

Java programming mandates that every method provide the return type. Java main method doesn’t return anything, that’s why it’s return type is void . This has been done to keep things simple because once the main method is finished executing, java program terminates.

Why is main void in Java?

The main() method is static so that JVM can invoke it without instantiating the class. … Void: It is a keyword and used to specify that a method doesn’t return anything. As main() method doesn’t return anything, its return type is void. As soon as the main() method terminates, the java program terminates too.

What is return keyword in Java?

The return keyword finished the execution of a method, and can be used to return a value from a method.

How can you retrieve a value from a method?

You declare a method’s return type in its method declaration. 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.

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Why do we use return in Java?

A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. … The variable receiving the value returned by a method must also be compatible with the return type specified for the method.

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