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the errors arriving during the execution of a program when there is a mistake of the programmer in applying the correct mathematical logic
eg: int a= 5;
int b=0;
System.out.print(a/b);
System.out.print("correct answer");
in this eg. a runtime error will be shown and to remove it we can use try catch block
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A program to explain the Exception Handling mechanisms in Java using the keywords try catch and finally?
Here is a code snippet illustrating exception handling: try { int a= 3 / 0 ; } catch ( ArithmeticException e ) { System.out.println ("An ArithmeticException has occured"); } finally { // some code }
What are the errors in object oriented program?
In Java, errors that arise during the execution of the program are more formally referred to as Exceptions. Exceptions can be handled using try catch blocks. Here is an example : try { int answer = 42 / 0 ; } catch ( ArithmeticException e ) { e.printStackTrace(); }
What a java program for arithmetic operations between two integers?
public static void main(String[] args) { int a = 5; int b = 10; int c; c = a + b; // addition c = a - b; // subtraction c = a * b; // multiplication c = a / b; // division }
What is throw keyword in java?
The throw keyword is used from within a method to "throw" an exception to the calling method. In order to throw an exception, the method signature must indicate that it will throw an exception. For example: public void foo() throws Exception { } When you want to actually throw the exception, you can do it a few different ways: throw new Exception("Exception message"); or from within a catch block ( catch(Exception ex) ): throw ex;
Define an exception called NoMatchException that is thrown when a string is not equal to Symbiosis Write a Java program that uses this exception?
import java.util.Scanner; class NoMatchException extends Exception { static void method() throws Exception{ String s = "India"; String s2 = " "; try { if (!s.equals(s2)){ throw new NoMatchException(); //System.out.println("Strings are equal"); } else { System.out.println("Strings are equal"); //throw new NoMatchException(); } } catch(NoMatchException ne){ System.out.println("Exception Found For String"); } finally { System.out.println("In Finally Block"); } } } public class BasicException { static void myMethod(int x, int y) throws Exception{ try { if(x < y ) { System.out.println("Y is greater then X"); throw new Exception(); } else System.out.println("Y is smaller"); } catch(Exception ex) { System.out.println("exception found"); //System.out.println(ex.toString()); } finally { System.out.println("FINALLY block"); } } public static void main(String args[]) throws Exception{ Scanner s = new Scanner(System.in); int d, a, x, y; System.out.println("Enter the value of x and y"); x = s.nextInt(); y = s.nextInt(); try { BasicException.myMethod(x , y); }catch(Exception e) { System.out.println("main method exception"); System.out.println(e.toString()); } try { NoMatchException.method(); } catch(NoMatchException e) { System.out.println("Exception Caught"); } try{ d=0; a=42/d; System.out.println("This will not be printed."); } catch(ArithmeticException e){ System.out.println("Division by zero."); } } }
Which operations are capable of throwing an ArithmeticException?
% and /
Give you an example of each type of Exception in Java through programs?
// A method which throws an exception. // Declare an ArithmeticException to be thrown. int integerDivision(int a, int b) throws ArithmeticException { // If we try to divide by zero, throw our exception... if(b == 0) { throw new ArithmeticException("Division by 0"); } // ...otherwise, return our result. return a/b; } // A method which catches an exception. void doSomeDivision() { // Let's divide each integer [0,9] by one another... for(int a = 0; a < 10; ++a) { for(int b = 0; b < 10; ++b) { // Try to do the division... try { final int q = integerDivision(a,b); System.out.println(a + " / " + b + " = " + q); } catch(ArithmeticException ex) { // ...end up here in case of Exception System.out.println("Cannot divide " + a + " by " + b); } } } }
A program to explain the Exception Handling mechanisms in Java using the keywords try catch and finally?
Here is a code snippet illustrating exception handling: try { int a= 3 / 0 ; } catch ( ArithmeticException e ) { System.out.println ("An ArithmeticException has occured"); } finally { // some code }
What are the errors in object oriented program?
In Java, errors that arise during the execution of the program are more formally referred to as Exceptions. Exceptions can be handled using try catch blocks. Here is an example : try { int answer = 42 / 0 ; } catch ( ArithmeticException e ) { e.printStackTrace(); }
What type of error is encountered if a program performs a division by zero?
Depends entirely on the programming language in question. Examples: C#: DivideByZeroException Java: ArithmeticException Python: ZeroDivisionError C++: No exception, let's the CPU it's been compiled for handle it. So whatever it would do in Assembly/Machine is what it does.
What is the use of throws in java?
The throw keyword in java causes a declared exception to be thrown. For example, if you want to mark an error in a method that add two numbers if any of then is negative you can write something like this:public int addMethod( int a, int b ){if ( a < 0 b < 0 ){throw new ArithmeticException("negative addition");}return a + b;}The previous code cause a ArithmeticException if some try to add negative numbers.
What is exception and list some of the common type of exception?
Exceptions are thrown when Java encounters an error. They are a fundamental part of the Java error handling system. In a nutshell, Java will throw an Exception when it encounters an error so that an exception handler can "handle" the error. For instance, if a calculator program is given the command "1/0", Java can throw an ArithmeticException which could be reported back to the user.Some common types are:ArithmeticException - thrown when arithmetic error has occurred, like dividing by 0IOException - thrown when an input or output error has occurred, like a file not foundArrayIndexOutOfBoundsException - thrown when a nonexistent element of an array is requested, like arr[-1]NullPointerException - thrown when some operation if performed on an object whose value is nll.
What a java program for arithmetic operations between two integers?
public static void main(String[] args) { int a = 5; int b = 10; int c; c = a + b; // addition c = a - b; // subtraction c = a * b; // multiplication c = a / b; // division }
What is throw keyword in java?
The throw keyword is used from within a method to "throw" an exception to the calling method. In order to throw an exception, the method signature must indicate that it will throw an exception. For example: public void foo() throws Exception { } When you want to actually throw the exception, you can do it a few different ways: throw new Exception("Exception message"); or from within a catch block ( catch(Exception ex) ): throw ex;
Define an exception called NoMatchException that is thrown when a string is not equal to Symbiosis Write a Java program that uses this exception?
import java.util.Scanner; class NoMatchException extends Exception { static void method() throws Exception{ String s = "India"; String s2 = " "; try { if (!s.equals(s2)){ throw new NoMatchException(); //System.out.println("Strings are equal"); } else { System.out.println("Strings are equal"); //throw new NoMatchException(); } } catch(NoMatchException ne){ System.out.println("Exception Found For String"); } finally { System.out.println("In Finally Block"); } } } public class BasicException { static void myMethod(int x, int y) throws Exception{ try { if(x < y ) { System.out.println("Y is greater then X"); throw new Exception(); } else System.out.println("Y is smaller"); } catch(Exception ex) { System.out.println("exception found"); //System.out.println(ex.toString()); } finally { System.out.println("FINALLY block"); } } public static void main(String args[]) throws Exception{ Scanner s = new Scanner(System.in); int d, a, x, y; System.out.println("Enter the value of x and y"); x = s.nextInt(); y = s.nextInt(); try { BasicException.myMethod(x , y); }catch(Exception e) { System.out.println("main method exception"); System.out.println(e.toString()); } try { NoMatchException.method(); } catch(NoMatchException e) { System.out.println("Exception Caught"); } try{ d=0; a=42/d; System.out.println("This will not be printed."); } catch(ArithmeticException e){ System.out.println("Division by zero."); } } }
Explain how try and catch is used to handle exception in java?
class CatchException { public static void main(String args[]) { try { int j=45/0; }catch(Exception exp){System.out.println("Exception caught "+exp.stacktrace());} } }
Why are tackpads used on laptops?
K u v e m p u U n i v e r s i t yLaboratory AssignmentsSubject: Basics of .NETSubject Code: BSIT - 61 L1. Write a program in C# using command line arguments to display a welcomemessage. The message has to be supplied as input in the command line.using System;using System.Collections.Generic;using System.Text;namespace Exercise_1{class Program{static void Main(string[] args){for (int i = 0; i < args.Length; i++){Console.Write(args[i] + " ");}Console.ReadLine();}}}2. Write a program in C# to find the area of a circle, given its radius.using System;using System.Collections.Generic;using System.Text;namespace Exercise_2{class Program{static void Main(string[] args){Console.WriteLine("Enter the radius of Circle to find its area");double radius =double.Parse(Console.ReadLine());double area = Math.PI * radius * radius;Console.WriteLine("The area of circle for given radius is : " + area);Console.ReadLine();}}}3. Write a program in C# to find the area of polygon - triangle and rectangle byusing multiple constructors.using System;using System.Collections.Generic;class rkm{public rkm(double basse,double height) //constructor for triangle{double b = basse;double h = height;double tri_area = (0.5) * b * h;Console.WriteLine("Area of Triange:- " + tri_area);}public rkm(float width, floatheight) //constructor for Rectangle{float w = width;float h = height;float rec_area = w * h;Console.WriteLine("Area of Rectangle:- "+ rec_area);}public static void Main(){Console.WriteLine("============For Triangle==============");Console.WriteLine("Enter the base of triangle:-");double tri_base =Convert.ToDouble(Console.ReadLine());Console.WriteLine("Enter the height of triangle:-");double tri_height =Convert.ToDouble(Console.ReadLine());Console.WriteLine("============For Rectangle==============");Console.WriteLine("Enter the width of rectangle:-");float rec_width = (float)(Convert.ToDouble(Console.ReadLine()));Console.WriteLine("Enter the height of rectangle:-");float rec_height = (float)(Convert.ToDouble(Console.ReadLine()));Console.WriteLine("================Result=================");rkm th1 = new rkm(tri_base, tri_height);rkm th2 = new rkm(rec_width, rec_height);Console.ReadLine();}}4. Write a program in C# to add and multiply two numbers and display the results.Demonstrate the use of ref and out parameters in this program.using System;using System.Collections.Generic;using System.Text;namespace Exercise_4{class Program{public static int ADD(ref int x,ref int y){int res = x + y;return res;}public static int Multiply(int x,int y, out int res1){res1 = x * y;return res1;}static void Main(string[] args){Console.WriteLine("Enter First Number");int n1 =Convert.ToInt32(Console.ReadLine());Console.WriteLine("Enter Second Number");int n2 =Convert.ToInt32(Console.ReadLine());int Res = Program.ADD(refn1, ref n2);Console.WriteLine("Sum of Two Number is : "+ Res);Program.Multiply(n1, n2, outRes);Console.WriteLine("Multiply of Two Number is : " + Res);Console.ReadLine();}}}5. Using foreach looping statement, write a program in C# to display all theelements of string array.using System;using System.Collections.Generic;using System.Text;namespace Exercise_5{class Program{static void Main(string[] args){string[] str = { "I","Love", "My", "India"};foreach (string s instr){Console.WriteLine(s);}Console.ReadLine();}}}6. Write a program in C# to create a string array to store 10 employees name.Display the employees name to the console by passing array as a parameter tothe display function.using System;using System.Collections.Generic;using System.Text;namespace Exercise_6{class Program{public static void Display(Arrayarr){foreach (string a inarr){Console.WriteLine(a);}}static void Main(string[] args){string[] arr = new string[10];for (int i = 0; i < arr.Length; i++){Console.WriteLine("Enter " + (i + 1) + " Emplyee Name");string str = Console.ReadLine();arr.SetValue(str, i);}Console.WriteLine("The Names you have Entered is given below ");Console.WriteLine();Display(arr);Console.ReadLine();}}}7. Write a program in C# to demonstrate the usage of checked and uncheckedstatements.using System;class rkm{public static void Main(){int i = Int32.MaxValue;Console.WriteLine("Simple: " + (i + 1));unchecked{Console.WriteLine("Unchecked: " + (i + 1));}checked{try{Console.WriteLine(i + 1);}catch (Exception ee){Console.WriteLine("Error in Checked Block");Console.ReadLine();}}}}8. Write a class called rectangle which consists of members side_1, side_2 anddisplayArea(). Write another class square which inherits class rectangle. Takeside of square as input and display the area of square on console.using System;using System.Collections.Generic;using System.Text;public class RKM{public double side_1;public double side_2;public void displayArea(){double area = side_1 * side_2;Console.WriteLine("Area is:- " + area);}}class Square : RKM{public static void Main(){Square sq = new Square();Console.WriteLine("Enter the side of Square:-");sq.side_1 =Convert.ToDouble(Console.ReadLine());sq.side_2 = sq.side_1;sq.displayArea();Console.ReadLine();}}9. Write a program to sort 20 decimal numbers in decreasing order and print theresult.using System;using System.Collections.Generic;using System.Text;class RKM{public static void Main(string[] args){decimal[] arr = { 12.3m, 45.2m, 5.4m, 23.44m, 43.21m, 31.34m, 4.3m, 21.3m,34.2m, 32.1m, 44.2m, 6.4m, 64.3m, 3.4m, 5.32m, 32.345m, 4.34m, 23.4m,45.234m, 5.31m };for (int i = 0; i < arr.Length; i++){Console.WriteLine(arr[i]);}Console.WriteLine("\n--Number in decreasing order--\n");int count = 0;while (count < arr.Length - 1){if (arr[count] < arr[count + 1]){decimal temp = arr[count];arr[count] = arr[count + 1];arr[count + 1] = temp;count = 0;continue;}count++;}foreach (double i inarr){Console.WriteLine(i);Console.ReadLine();}}}10. Write a program for matrix multiplication in C#.using System;using System.Collections.Generic;using System.Text;namespace Exercise_10{class Program{static void Main(string[] args){int[,] x ={ { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };int[,] y ={ { 11, 12, 13 }, { 14, 15, 16 }, { 17, 18, 19 } };Console.WriteLine("----First Matrix--------");for (int i = 0; i < 3; i++){for (int j = 0; j < 3; j++)Console.Write(x[i, j] + " ");Console.WriteLine();}Console.WriteLine("----Second Matrix--------");for (int i = 0; i < 3; i++){for (int j = 0; j < 3; j++)Console.Write(y[i, j] + " ");Console.WriteLine();}Console.WriteLine("Multilpilcation of Two Matrix (Matrix1 * Matrix2) ");for (int i = 0; i < 3; i++){for (int j = 0; j < 3; j++)Console.Write(x[i, j] * y[i, j] + " ");Console.WriteLine();}Console.ReadLine();}}}11. Write a program in C# to sort the students list based on their names. Thestudents list is stored in a string array.using System;using System.Collections.Generic;using System.Text;namespace Exercise_11{class Program{public static void Display(Arrayarr){foreach (string s inarr){Console.WriteLine(s);}}static void Main(string[] args){Console.WriteLine("Enter the No of Student");int n =Convert.ToInt16(Console.ReadLine());string[] arr = new string[n];for (int i = 0; i < arr.Length; i++){Console.WriteLine("Enter " + (i + 1) + " Student Name");string str = Console.ReadLine();arr.SetValue(str, i);}Console.WriteLine("\nThe Names you have Entered i Sort order is givenbelow ");Console.WriteLine();Array.Sort(arr);Display(arr);Console.ReadLine();}}}12. Write a program in C# to demonstrate operator overloading.using System;class rkm{int a;public rkm(){a = 10;}public static rkm operator-(rkm obj){obj.a = -obj.a;return obj;}public void display(){Console.WriteLine("Number is {0}", a);}public static void Main(){rkm aa = new rkm();aa.display();aa = -aa;aa.display();Console.ReadLine();}}13. Write a program in C# to demonstrate boxing and unboxing opertation.using System;using System.Collections.Generic;using System.Text;namespace Exercise_13{class Program{static void Main(string[] args){int i = 10;Console.WriteLine("Value of i : " + i);object obj = (object)(i+1); // boxing Convert int to objectConsole.WriteLine("Value of obj :"+ obj);i = (int)obj;Console.WriteLine("Value of i after unbox "+i);Console.ReadLine();}}}14. Write a program in C# to throw and catch any arithmetic exception.using System;using System.Collections.Generic;using System.Text;namespace Exercise_14{class Program{static void Main(string[] args){try{int n1 =10;int n = 0;int res;res = n1 / n;Console.WriteLine(res);}catch (ArithmeticException ex){Console.WriteLine(ex.Message.ToString());}Console.ReadLine();}}}15. Write a program to demonstrate the usage of threads in C#.using System;using System.Threading;class rkm{public void get1(){for (int i = 0; i
