How To Get Return Value From Method In Java?

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

Let’s see a simple example to return integer value.

  1. public class ReturnExample1 {
  2. int display()
  3. {
  4. return 10;
  5. }
  6. public static void main(String[] args) {
  7. ReturnExample1 e =new ReturnExample1();
  8. System.out.println(e.display());

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.

Can you return a method in Java?

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 and cannot contain a return statement.

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); System. out. print(“Enter string: “);
  5. String str = scan. nextLine();
  6. String reverseStr = reverseStringData(str);
  7. System. out. println( “Reverse String: ” + reverseStr);
  8. }
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What is return without value in Java?

Java requires that a method declare the data type of the value that it returns. If a method does not return a value, it must be declared to return void.

What is return value in Java?

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

What is the return type of () method?

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. A return type may be a primitive type like int, float, double, a reference type or void type ( returns nothing).

How many values can a method return?

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

How do you pass a HashMap method?

4 Answers. Map<K,V> books = new HashMap <K,V>(); // K and V are Key and Value types Student student = new Student(books); // pass the map to the constructor.. //Student Constructor public Student(Map<K,V> books){.. }

How do I fix a missing return in Java?

In order to solve the missing return statement error, we simply need to add the return statement to the method just like to the one we did in case one. So, we will return the some value of the same type which we used before the name like as: public static String checkNumber( int number) { //initialize variable i.

Can I return a method?

Returning a Value from a Method Java requires that a method declare the data type of the value that it returns. If a method does not return a value, it must be declared to return void.

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Is void a return type?

Void functions are created and used just like value – returning functions except they do not return a value after the function executes. You may or may not use the return statement, as there is no return value. Even without the return statement, control will return to the caller automatically at the end of the function.

How do you return a long value in Java?

Example 3

  1. public class IntegerLongValuetExample3 {
  2. public static void main(String[] args) {
  3. Long object1 = new Long (298689);
  4. // returns the value of this Long object as a long.
  5. long l1 = object1. longValue ();
  6. System.out.println(” Value of l1 as long is: ” + l1);
  7. Long object2 = new Long (-98723886);

What is return type in Java with example?

Java Return Statement. Every method is declared with a return type in java and it is mandatory for Java methods. Return type may be a primitive data type like int, float, double, a reference type, or void type which represents “ return nothing”.

What is the return type of a method that does not return any value?

1. What is the return type of a method that does not return any value? Explanation: Return type of a method must be made void if it is not returning any value. 2.

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