C++ Exceptions and Error Handling

What will be the first line printed to System.err when astack.concert() is executed?

If an UnsupportedOperationException is thrown within the concert() method's first try block, what will be the last line printed to System.err by concert()?

Under what condition will the line System.err.println("--.but we let it pass"); be executed?

Which exception, if thrown, is re-thrown inside concert()?

What is printed to System.err if astack.clear() throws an UnsupportedOperationException?

What is the primary purpose of exceptions in programming?

How do exceptions alter the control flow of a program?

What happens when a method throws an exception that is not caught within that method?

In the context of exception handling, what does 'catching' an exception imply?

If a method rock() is declared to throw an UnsupportedOperationException, what does this declaration signify?

Consider a method miusik() that calls pop() and rock(). If rock() throws an exception, what happens to the subsequent line of code in miusik() that prints the result of rock()?

In the provided pop() method, what potential issue exists that is not explicitly addressed with exception handling?

What is the significance of the new keyword when throwing an exception (e.g., throw new UnsupportedOperationException(...))?

In a scenario where a function is designed to read a file and return the number of characters read, what is the primary advantage of using exceptions over returning negative error codes?

What key aspect of program control flow is altered by the use of exceptions in error handling?

Why it is important to expose unexpected behavior or errors during a program's execution?

What is the most significant difference between handling errors with exceptions versus traditional error codes?

When a function encounters an issue opening a file, and it uses error codes for handling, what would be a typical return value to indicate this?

In the context of handling errors in main files, what is the convention for return values in many programming environments?

Consider a scenario where multiple nested function calls occur, and an error arises in the innermost function. If exceptions are used for error handling, what is the mechanism by which the error is managed?

If a function encounters an issue reading a file, and it returns a negative number as an error code, how does the calling function typically determine the specific cause of the error?

When should a programmer choose to implement a checked exception in Java?

Which of the following statements accurately describes the key difference between checked and unchecked exceptions in Java?

Given a scenario where a program attempts to read a file that does not exist, which type of exception would be most appropriate to represent this situation?

A software developer is designing a library and wants to signal to users that an input parameter should never be null. What type of exception would be most appropriate to throw if the parameter is indeed null?

Suppose a method could potentially throw either an IOException or a custom checked exception called DataProcessingException. How should the method signature be defined to properly handle these exceptions?

In the context of exception handling, what is the primary purpose of using a try-catch block?

Which exception type indicates serious problems that a reasonable application should not try to catch?

When designing a method that interacts with external resources like files or networks, and these operations might fail due to reasons beyond the program's immediate control, what kind of exception should ideally be used?

Consider a scenario where size is initialized to 2 in the ArrayStack. What will be the output of concert() if rock() is called?

What will be printed to System.err if size is initially set to 0 when concert() is called?

Suppose rock() throws an IOException. Which block will handle this exception in concert()?

What is the purpose of the finally block in the concert() method?

In rock(), under what condition will a NullPointerException be thrown?

What happens if size is equal to 1 when the rock() method is called?

In the soundTest() method, what is the initial size of the ArrayStack named astack before any elements are pushed?

What would be the effect of removing the throw e; line inside the NullPointerException catch block in the concert() method?

In Java, what is the primary purpose of the throws keyword in a method signature?

Consider a scenario where a try block is followed by multiple catch blocks. What determines which catch block will execute if an exception occurs within the try block?

What is the purpose of the finally block in a try-catch-finally construct?

If an exception is thrown within a try block, and there is a corresponding catch block that can handle the exception, what happens to the code within the try block that follows the point where the exception was thrown?

In the given code snippet for the rock() method:

public Integer rock() {
    if (size < 1)
        throw new UnsupportedOperationException("can't pop empty Stack");
    else if (size -= 1)
        throw new NullPointerException("catch me if you can");
    return array[--size];
}

Under what condition will a NullPointerException be thrown?

Given the concert() method and the rock() method, what will be the output if rock() throws an UnsupportedOperationException?

What is a potential improvement to the miusik() method to prevent the UnsupportedOperationException from being thrown in the first place?

Assuming a method can throw multiple types of exceptions, is it necessary to catch all possible exceptions in a single try-catch block?

Exception

Error Signaling (Traditional)

Main File Return Codes

Primary Purpose of Exceptions

Exception Control Flow

Exception's Distinctness

Exception Control Flow Reversal

Return Value of 0

Catch or Propagate

Exception Declaration

Throw Keyword

Interrupted Flow

Implicit Exception Throw

new Exception

What is the finally block?

What is an Exception?

What causes a NullPointerException?

What is exception handling?

What is the catch block for?

throws declaration

catch block

try block

finally block

Order of catch blocks

Exception Recovery

UnsupportedOperationException

NullPointerException

Unchecked Exception

Exception Handling

Re-throwing an exception

Checked Exception

Catch Block Order

Error

RuntimeException

Custom Exceptions

MyException extends Exception

Exception Choice