p.3
Receiving Return Values
What does the 'System.out.println' statement do in the main method?
It prints the average and maximum values to the console.
p.17
Return Statement and Method Termination
What does the 'return;' statement indicate in a method?
It terminates the method and returns control to the caller without returning a value.
p.13
Receiving Return Values
Why are return values important in methods?
They allow methods to provide results or outputs to the code that called them.
p.13
Receiving Return Values
What happens if a method does not return a value?
It is defined with a void return type.
p.8
Return Statement and Method Termination
What does the sayHello() method do when the input number is 0?
It terminates and returns to the main method without printing "Hello".
p.4
Method Definition and Structure
What is the purpose of access specifiers in method declarations?
To define the visibility and accessibility of the method.
p.12
Method Definition and Structure
What does the 'discount' method calculate?
It calculates the discounted amount by multiplying the amount with the rate.
p.27
Common Errors in Method Overloading
What is the error when calling avg = average(11.3, 8.2);?
No suitable method found for average(double, double).
p.1
Method Definition and Structure
What is the focus of ITP3914 – Programming Part 3?
Basic Program Structures.
p.4
Method Definition and Structure
What are the components of a method header in C?
Access specifier, optional modifiers, method type, method name, and parameters.
p.24
Common Errors in Method Overloading
What is the error encountered when trying to overload the 'average' method?
The return type cannot be used to distinguish overloaded methods.
p.25
Method Definition and Structure
What is the purpose of the method 'average' in the DoubleAverage class?
To calculate the average of two double values.
p.15
Receiving Return Values
How is the return value from showSum used in the main method?
It is assigned to the variable sum and then printed.
p.15
Local Variables and Scope
What is the significance of the variable sum in main() compared to the variable sum in showSum()?
They are two different variables with different scopes.
p.26
Receiving Return Values
What is the output of the main method in the provided code?
It will print the default value of avg, which is 0.0.
p.3
Parameter Passing Techniques
What parameters do the methods 'calAverage' and 'findMax' accept?
Both methods accept two int parameters.
p.8
Return Statement and Method Termination
What happens when execution reaches the return statement in a method?
The method terminates, and execution returns to the caller immediately.
p.16
Return Statement and Method Termination
What does the return statement do in a method?
It causes the method to terminate and execution returns to the caller.
p.12
Method Definition and Structure
What is the output of the method 'showSum' when called with arguments 3 and 4?
It prints 7, which is the sum of 3 and 4.
p.14
Receiving Return Values
How does the caller receive the return value from showSum()?
By assigning it to a variable, in this case, sum.
p.9
Parameter Passing Techniques
When is the parameter variable created?
When the method is entered.
p.26
Argument Promotion in Method Calls
What happens during argument promotion in method calls?
Arguments are automatically converted to a compatible type if no exact match is found.
p.5
Calling Methods in Java
What is the sequence of output when running the program?
In main, Hello, Back to main
p.7
Method Definition and Structure
What indicates the termination of a method in Java?
When execution reaches the closing brace (}).
p.7
Return Statement and Method Termination
What happens after a method terminates?
The program flows back to the caller, which then resumes execution.
p.9
Parameter Passing Techniques
What is printed when the main method is executed?
"In main" followed by the value of the argument and then "Back to main".
p.16
Return Statement and Method Termination
What must the method type be when using return expression?
It must be the same as the data type of the expression and must not be void.
p.3
Return Statement and Method Termination
What does the 'calAverage' method return?
It returns a double value representing the average of two integers.
p.7
Calling Methods in Java
How do you call a method in Java?
Write its name followed by parentheses, e.g., sayHello().
What is the purpose of the average method in the provided code?
To calculate the average of two numbers, which can be of different types.
What is the purpose of method overloading in the FindAverage2 class?
To provide multiple ways to calculate the average using different parameter types.
p.25
Argument Promotion in Method Calls
What happens when calling a method with arguments of different data types in Java?
Java automatically converts the data type if it can do so without loss of information.
p.25
Receiving Return Values
What is the output of the method call average(5.1, 6.3)?
Average=5.699999999999999.
p.27
Common Errors in Method Overloading
Why can't the method average(double, double) be found?
Because the arguments cannot be converted to match any existing method signatures.
How does the findMax method with three parameters determine the maximum value?
It calls the findMax method with two parameters twice.
p.3
Method Definition and Structure
What is the purpose of the 'main' method in the StudentMarks class?
It serves as the entry point for the program.
p.19
Return Statement and Method Termination
What happens if the condition in the second 'myMethod' is true?
It returns the variable 'x'.
p.4
Method Definition and Structure
What type of method is 'calAverage'?
It is a static method that returns a double.
p.12
Parameter Passing Techniques
What is the significance of having different data types for the arguments in the methods?
It allows methods to accept various types of input, enhancing flexibility.
p.27
Common Errors in Method Overloading
What error occurs when calling avg = average(11, 8);?
The reference to average is ambiguous due to multiple matching methods.
p.11
Local Variables and Scope
What are local variables?
Variables defined within a method that can only be used within that method.
How many overloaded versions of the findMax method are defined in the FindMax class?
Two versions: one for two integers and one for three integers.
p.24
Common Errors in Method Overloading
What happens when you try to compile the WrongAverage class?
It results in a compilation error due to method overloading conflict.
What does the expression (x > y) ? x : y return in the findMax method?
It returns the greater of the two integers x and y.
p.7
Calling Methods in Java
What happens to the program flow when a method is called?
The program flows to execute the method and the caller suspends.
p.12
Method Definition and Structure
What is the purpose of the method 'sayHello' in the class M6?
It prints 'Hello' to the console.
p.14
Return Statement and Method Termination
What does the method showSum() return?
It returns the value 16 to the caller.
What is the purpose of the 'average' method in the WrongAverage class?
To calculate the average of two numbers.
p.19
Return Statement and Method Termination
What happens if the condition in the second 'myMethod' is false?
It returns the variable 'f'.
p.4
Method Definition and Structure
What parameters does the 'calAverage' method accept?
Two integer parameters, x and y.
p.16
Return Statement and Method Termination
When is the first form of the return statement used?
When a method produces no value.
p.16
Return Statement and Method Termination
What must the method type be when using return;?
The method type must be void.
What is the significance of method overloading in the FindMax class?
It allows the same method name to handle different numbers of parameters.
p.3
Local Variables and Scope
What is the purpose of the Scanner class in the program?
It is used to read user input from the console.
p.13
Receiving Return Values
What is a method return value?
The value that a method sends back to the caller after execution.
p.13
Receiving Return Values
Can a method return multiple values?
No, a method can only return one value, but it can return an object that contains multiple values.
p.8
Return Statement and Method Termination
What is the output of the program when the user inputs 30?
"In main", "Hello", "Back to main".
p.16
Return Statement and Method Termination
When is the second form of the return statement used?
When a method returns the expression value to the caller.
p.26
Argument Promotion in Method Calls
What does the average method return when called with two characters?
The average of their ASCII values.
What is the purpose of the method findMax in the FindMax class?
To find the maximum value among given integers.
p.25
Argument Promotion in Method Calls
What is the significance of the statement 'From small to large' in the context of argument promotion?
It indicates that smaller data types can be promoted to larger data types without loss of information.
p.9
Parameter Passing Techniques
What is the purpose of the parameter variable in a method?
To store the argument value passed to the method.
p.15
Receiving Return Values
What is the purpose of the method showSum in the provided code?
To calculate the sum of two integers and return the result.
What types of parameters are used in the overloaded average methods?
char and int, int and double, double and int.
p.14
Return Statement and Method Termination
What is the purpose of the return statement in a method?
To send back a reply or result to the caller.
p.11
Local Variables and Scope
When are local variables created?
Upon entering the method.
p.17
Method Definition and Structure
What is the purpose of the 'public static void myMethod()' declaration?
It defines a method named 'myMethod' that does not return a value.
p.17
Return Statement and Method Termination
What does 'return x;' signify in a method?
It indicates that the method returns a value 'x' to the caller.
p.4
Method Definition and Structure
What is the method declaration for calculating the average in C?
public static double calAverage(int x, int y) { … }
p.12
Method Definition and Structure
What does the method 'showValue' do?
It prints the integer value passed to it.
p.6
Calling Methods in Java
What is the final output when the main method completes execution?
I am the Boss!!! I am a worker!!
p.13
Receiving Return Values
What is the syntax for returning a value from a method in Java?
Use the 'return' keyword followed by the value to be returned.
p.10
Common Errors in Method Overloading
What is the output of the program when executed?
In main, 16, Back to main.
p.10
Method Definition and Structure
What is the purpose of the method 'showSum' in the class M4?
To print the sum of two integers, x and y.
What is method overloading?
Defining multiple methods with the same name but different parameter types or counts.
p.19
Common Errors in Method Overloading
What is a potential issue with returning a float from a method declared to return an int?
It can cause a compilation error due to type mismatch.
What is method overloading?
Having several different methods with the same name but different parameter sets.
What must be different in each overloaded method?
The number of parameters or parameter types.
How does Java determine which overloaded method to call?
By matching the argument(s) against the parameter(s).
What does the method average(char a, int b) return?
It returns the average of a character and an integer as a double.
p.11
Local Variables and Scope
What is the purpose of the showSum method in the code?
To calculate and print the sum of two integers.
p.3
Calling Methods in Java
How are the methods 'calAverage' and 'findMax' called in the main method?
They are called with two integer arguments obtained from user input.
