C++ Tutorial Index

C++ Tutorial C++ History C++ Installation C++ First Program C++ cin and cout C++ Data type C++ Variable C++ operator C++ Keywords

C++ Control Statements

C++ If C++ Nested if C++ If-else C++ If-else-if C++ Switch C++ Break C++ Continue C++ Goto C++ For loop C++ While loop C++ Do while loop

C++ Functions

C++ Call by Value C++ Call by Reference C++ Recursion Function C++ Inline function C++ Friend function

C++ Arrays

Single dimension array Two dimension array

C++ Strings

C++ Strings

C++ Inheritance

C++ Inheritance Single level Inheritance Multilevel Inheritance Multiple Inheritance Hierarchical Inheritance Hybrid Inheritance

C++ Polymorphism

C++ Polymorphism C++ Overloading C++ Overriding C++ Virtual Function

C++ Pointers

C++ Pointers C++ this pointer

C++ Exception Handling

C++ Exception Handling

C++ Constructors

C++ Constructors Default Constructor Parameterize Constructor Copy constructor Constructor Overloading Destructor

C++ File Handling

C++ File Handling C++ Writing to file C++ Reading file C++ Close file

Miscellaneous

C Vs C++ C++ Comments C++ Data Abstraction C++ Identifier C++ Memory Management C++ Storage Classes C++ Void Pointer C++ Array To Function C++ Expressions C++ Features C++ Interfaces C++ Encapsulation std::min in C++ External merge sort in C++ Remove duplicates from sorted array in C++ Precision of floating point numbers Using these functions floor(), ceil(), trunc(), round() and setprecision() in C++ C++ References C++ Friend Functions C++ Mutable keyword Unary Operators in C++ Initialize Array of objects with parameterized constructors in C++ Differences between #define & const in C/C++ C++ Program to Implement Shell Sort C++ Program to Implement Merge Sort Storage Classes in C Vector resize() in C++ Passing by Reference Vs. Passing by the pointer in C++ Free vs delete() in C++ goto statement in C and C++ C++ program to read string using cin.getline() C++ String Concatenation Heap Sort in C++ Swap numbers in C++ Input Iterators in C++ Fibonacci Series in C++ C ++ Program: Alphabet Triangle and Number Triangle C++ Program: Matrix Multiplication C++ Program to Print Fibonacci Triangle Stack in C++ Maps in C++ Queue in C++ C++ Bitset C++ Algorithms Priority Queue in C++ C++ Multimap C++ Deque Function Pointer in C++ Sizeof() Operators in C++ C++ array of Pointers free() Vs delete in C Timsort Implementation Using C++ CPP Templates C++ Aggregation C++ Enumeration C++ Math Functions C++ Object Class C++ Queue Initialize Vector in C++ Vector in C++ C++ STL Components Function overloading in C++ C++ Maximum Index Problem C++ find missing in the second array C++ Program to find the product array puzzle C++ Program To Find Largest Subarray With 0 Sum C++ Program To Move All Zeros To The End Of The Array C++ Program to find the element that occurs once C++ Program to find the largest number formed from an array Constructor Vs Destructor C++ Namespaces C++ OOPs Concept C++ Static C++ Structs C++ Try-Catch C++ User Defined Exceptions C++ Virtual Destructor C++ vs C# Malloc() and new in C++ Palindrome Number Program in C++ Snake Code in C++ Splitting a string in C++ Structure Vs Class in C++ Virtual Function Vs Pure Virtual Function C++ Bidirectional Iterators C++ Forward Iterators C++ Iterators C++ Output Iterators C++ Range-based For Loop Converting string into integer in C++ LCM Program in C++ Type conversion in C++ Add two numbers using the function in C++ Advantage and disadvantage friend function C++ Armstrong Number Program in C++ ATM machine program in C++ using functions Binary to Decimal in C++ Bit Manipulation in C++ C++ Constructor C++ Dijkstra Algorithm Using the Priority Queue C++ int into String C++ Signal Handling Decimal to Binary in C++ Decimal to Hexadecimal in C++ Decimal to Octal in C++ Factorial Program in C++ Function in C++ Hexadecimal to Decimal in C++ Octal to Decimal in C++ Reverse a Number in C++ Structure Vs Class in C++ C++ Forward Iterators C++ Output Iterators C++ Prime number program Char Array to String in C++ Constructor Overloading in C++ Default arguments in C++ Different Ways to Compare Strings in C++ Dynamic Binding in C++ Program to convert infix to postfix expression in C++ SET Data Structure in C++ Upcasting and Downcasting in C++ Reverse an Array in C++ Fast Input and Output in C++ Delete Operator in C++ Copy elision in C++ C++ Date and Time C++ Bitwise XOR Operator Array of sets in C++ Binary Operator Overloading in C++ Binary Search in C++ Implementing the sets without C++ STL containers Scope Resolution Operator in C++ Smart pointers in C++ Types of polymorphism in C++ Exception Handling in C++ vs Java Const Keyword in C++ Type Casting in C++ Static keyword in C++ vs Java Inheritance in C++ vs Java How to concatenate two strings in C++ Programs to Print Pyramid Patterns in C++ swap() function in C++ Structure of C++ Program Stringstream in C++ and its applications rand() and srand() in C / C++ C++ Ternary Operator C++ Scope of Variables While Loop Examples in C++ Star pattern in C++ using For Loops For Loop Examples in C++ Do-While Loop Examples in C++ Top 5 IDEs for C++ That You Should Try Once Assertions in C/C++ C++ Convert Int to String Continue in C++ While loop Diamond Pattern in C++ using For Loop How to Reverse a String in C++ using Do-While Loop How to Reverse a String in C++ using For Loop How to Reverse a String in C++ using While Loop Infinite loop in C++ Loops in C++ Returning Multiple Values from a Function using Tuple and Pair in C++ wcscpy(), wcslen(), wcscmp() Functions in C++

Exception Handling in C++ vs Java

Nowadays, exception handling is a feature found in virtually all object-oriented languages. We can also find this type of feature in Java and C++. The try-catch and block is required in both languages for managing exceptions, which is a comparable need for both C++ and Java. The terms to try, catch, and block are used for exception handling in both languages, and they also have the same meaning in both languages. Even so, there are certain challenges.

The following points outlines how Java and C++ handle exceptions differently :

Java :

  • As an exception, only throwable objects may be hurled.
  • To handle any error, we may capture Exception objects. Because we typically only catch Exception-related Throwable(s).
  • After the try-catch block, an additional special block known as finally is always carried out.
  • Checked and unchecked exceptions are the two different sorts.
  • In order to list the exceptions that a function may throw, use the special term throws.
  • In Java, finding and managing the exception is simpler.

C++ :

  • Any type may be raised as an exception.
  • All sorts of exceptions can be caught with an unique catch called "catch all."
  • Such(finally) a block doesn't exist in C++.
  • There are no exceptions selected.
  • The exceptions which could be thrown by a function are listed using the term throw.
  • In C++, locating and managing the exception is fairly challenging.

Following is a detailed discussion of the aforementioned points:

1) In C++, exceptions can be thrown for any type, including primitive and pointer types. But only throwable objects—which are instances of any Throwable class subclass—can be thrown as exceptions in Java. For instance, the given type of code is valid in C++ but invalid in Java.

Example :

// CPP Program for illustrating all the types (like primitive
// and pointer) could be thrown as exceptions.
#include <iostream>
using namespace std;
int main()
{
	int a = -5;


	// some other kind of stuff
	try {
		// some other kind of stuff
		if (a < 0) {
			throw a;
		}
	}
	catch (int a) {
		cout << "Exception has occurred : the thrown value is " << a
			<< endl;
	}
	getchar();
	return 0;
}

Output :

Exception has occurred : the thrown value is -5

2) The "catch all" function in C++ is a particular catch all method that can handle any exception.

Example :

// CPP example to illustrate catch all functions
#include <iostream>
using namespace std;
int main()
{
	int a = -43;
	char* pntr;


	pntr = new char[256];


	try {


		if (a < 0) {
			throw a;
		}
		if (pntr == NULL) {
			throw " the pntr is NULL ";
		}
	}
	catch (...) // catch all function
	{
		cout << "Exception has occurred: now exiting " << endl;
		exit(0);
	}


	getchar();
	return 0;
}

Output :

Exception has occurred: now exiting

For all intents and purposes, we can capture exceptions in Java using Exception objects. Because we typically just catch Exception(s) and Throwable(s) (which are Errors)

catch(Exception exp){
 //something
}

3) After the try-catch and block in Java, a block known as finally is always run. Cleaning up may be done with this block. Such a block doesn't exist in C++.

Example :

// Java Programme to illustrate the creation of an exception type
class Testing extends Exception {
}


class Main {
	public static void main(String argmnts[])
	{


		try {
			throw new Testing();
		}
		catch (Testing x) {
			System.out.println("Received the Testing Exception");
		}
		finally {
			System.out.println("\nInside the finally block ");
		}
	}
}

Output :

Received the Testing Exception
Inside the finally block

4) All exceptions in C++ are unchecked. Checked and unchecked exceptions are both available in Java.

5) A new term called throws is used in Java to list the exceptions that a function may throw. There exists no throws keyword in C++, instead, the term throw is used in this context.

6) In C++, if the exception isn't handled, the function unexpected() is called, which causes an improper programme or application termination. Finding a specific exception that occurs in our C++ software takes a lot of effort since unexpected() in C++ does not inform us what type or line the exception has happened on. In contrast, Java's runtime system (JVM) hands away the exception object to the default exception handler if the system-generated exception isn't handled. This default exception handler merely publishes the name, description, and line number where the error occurred. Therefore, it is simpler to identify and handle exceptions in Java than it is in C++.



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