why objects are passed as arguments in java

Objects are passed as arguments in Java to send related data to a method together.It helps reduce passing many separate variables.A method can access object properties using the object reference.It makes the code cleaner and easier to manage.Objects are commonly used for real-world entities like Student, Car, or Employee.In Java, the reference of the object is passed to the method.

Throws
throws is a keyword in Java that is used in the signature of a method to indicate that this method might throw one of the listed type exceptions. The caller to these methods has to handle the exception using a try-catch block.

• Declares possible exceptions.
• Mainly used with checked exceptions.

Syntax
returnType methodName() throws ExceptionName

class Test {

    static void checkAge(int age) throws Exception {
        if (age < 18) {
            throw new Exception("Not Eligible");
        } else {
            System.out.println("Eligible");
        }
    }

    public static void main(String[] args) {
        try {
            checkAge(15);
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}