Examples of returning integer values from Java methods

📚 Quick Study Guide

• ✨ A Java method can return an integer value using the int keyword as its return type.
• 🔢 The return statement is used within the method to send the integer value back to the caller.
• ✅ If a method is declared with a return type of int, it MUST return an integer value or throw an exception.
• ⚠️ Methods that do not return a value should use the void keyword instead of int.
• 💡 You can perform calculations within the method and return the result as an integer.
• ✏️ Ensure the value returned matches the declared return type to avoid compilation errors.

Practice Quiz

1. Which keyword is used to specify that a Java method returns an integer value?
   1. string
   2. int
   3. boolean
   4. void
2. What happens if a method declared with int return type does not return any value?
   1. The program compiles and runs without errors.
   2. A runtime error occurs.
   3. A compilation error occurs.
   4. The method returns a default value of 0.
3. Which statement is used to return an integer value from a Java method?
   1. print
   2. return
   3. output
   4. send
4. What is the return type of a method that calculates the sum of two integers?
   1. double
   2. void
   3. int
   4. String
5. If a method is designed to return the square of an integer, what should the return type be?
   1. float
   2. int
   3. double
   4. long
6. What will be the output of the following Java code?

   public class Main {
       public static int getValue() {
           return 10;
       }
       public static void main(String[] args) {
           int result = getValue();
           System.out.println(result);
       }
   }

   1. 0
   2. NullPointerException
   3. 10
   4. Error
7. Which of the following is a valid method signature for a method returning an integer?
   1. void calculate()
   2. int calculate(int x, int y)
   3. String calculate()
   4. boolean calculate()