Calling objectA.equals(null) appropriately overridden in True
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Question five
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Solved in 2 steps
- Write a class TimeOfDay that uses the exception classes defined in the previous exercise. Give it a method setTimeTo(timeString) that changes the time if timeString corresponds to a valid time of day. If not, it should throw an exception of the appropriate type. [Java]In preparation for a class Fraction, create a classNullDenominatorExceptionthat must be a checked exception whoseinstances are thrown if the denominator of an object of class Fraction is 0.A pedometer treats walking 2,000 steps as walking 1 mile. Write a stepsToMiles() method that takes the number of steps as an integer parameter and returns the miles walked as a double. The stepsToMiles() method throws an Exception object with the message "Exception: Negative step count entered." when the number of steps is negative. Complete the main() method that reads the number of steps from a user, calls the stepsToMiles() method, and outputs the returned value from the stepsToMiles() method. Use a try-catch block to catch any Exception object thrown by the stepsToMiles() method and output the exception message. Output each floating-point value with two digits after the decimal point, which can be achieved as follows: System.out.printf("%.2f", yourValue);
- A pedometer treats walking 2,000 steps as walking 1 mile. Write a stepsToMiles() method that takes the number of steps as an integer parameter and returns the miles walked as a double. The stepsToMiles() method throws an Exception object with the message "Exception: Negative step count entered." when the number of steps is negative. Complete the main() method that reads the number of steps from a user, calls the stepsToMiles() method, and outputs the returned value from the stepsToMiles() method. Use a try-catch block to catch any Exception object thrown by the stepsToMiles() method and output the exception message. Output each floating-point value with two digits after the decimal point, which can be achieved as follows:System.out.printf("%.2f", yourValue); Ex: If the input of the program is: 5345 the output of the program is: 2.67 Ex: If the input of the program is: -3850 the output of the program is: Exception: Negative step count entered. import java.util.Scanner; public class…The following code is causing an exception during the runtime. class test{ public static void main(String[] args) { Object o = "Hello"; Object s = new Random(); m(o); m(s); } public static void m(Object o) { String s = (String)o; System.out.println(s.length()); }} Exception can be prevented by adding an if statement and type casting in the method m Exception can be handled by adding try-catch in the main method answers A or B both works Non of the answersJava Questions - (Has 2 Parts). Based on each code, which answer out of the choices "A, B, C, D, E" is correct. Each question has one correct answer. Thank you. Part 1 - Which of these keywords is used by the calling method to guard against the exception that is thrown by called method? A. tryB. throwC. throwsD. catchE. finally Part 2 - Which of the following is correct? A. All classes of Exception extend from Error.B. All classes of Error extend from Exception.C. All classes of Exception extend from Throwable.D. All classes of Throwable extend from Exception.E. All classes of Throwable extend from RuntimeException.
- In Java when a method throws a checked Exception, what must we always do when calling that method? A. Make sure to declare the method as static. B. Put it inside a try/catch block. C. Set the permission level of the method to private. D. Check our input, and if it will be bad input we must throw an exception before calling the method.a) Write a method in java that searches a numeric array for a specified value. The method should return the subscript of the element containing the value if it is found in the array. If the value is not found , the method should throw an exceptionof the Exception class with the error message “Element not found”. b) Write an exception class that can be thrown when a negative number is passed to a method.Let's revisit chapter 5 example, but this time, no method can throw any exception out of the method and if an exception was detected then you will have to throw your own custom exception to let the user know what happened. public class Chapter11Demo{ public static void main(java.lang.String[] args) {method1();}private static void method1(){ method2();}private static void method2(){ method3();}private static void method3(){ method4();}private static void method4(){ method5();}private static void method5(){ method6();}private static void method6(){ java.io.File in=new java.io.File("somefile.txt"); java.io.File out=new java.io.File("somefile2.txt"); java.util.Scanner inFile=new java.util.Scanner(in); java.io.FileWriter outFile=new java.io.FileWriter(out); }}
- !!!!!!!!!!Below is The following class maintains an account balance and returns aspecial error code.public class Account{private double balance;// returns new balance or -1 if errorpublic double deposit(double amount){if (amount > 0)balance += amount;elsereturn -1; // Code indicating errorreturn balance;}}Rewrite the class so that it throws appropriate exception instead ofreturning -1 as an error code. Write test code that attempts to depositinvalid amounts and catches the exceptions that are thrown/. CoseConsider the following test method code fragment, which tests whether a method given invalid input produces the expected exception in response. On which of the following lines should the test return false, indicating that the test has failed? There may be more than one correct answer! try { methodCall(invalidInput); // 1. line after method call } catch (IllegalArgumentException e) { // 2. correct } catch (Exception e) { // 3. incorrect } Group of answer choices 1. line after method call 2. correct 3. incorrectcreate a method: public static double division(double a, double b) throws IllegalArgumentException { } that divides a/b and returns the division value. if b == 0 it throw the IllegalArgumentException since anything divided by O is an Illegal division operations. Complete the logic for this method. 2. Call you method in an application (main() method) be sure to include a try and catchf block, where the try {} block contains the method division that can possible throw an exception, and the following catchf} block(s) to handle the possible Exceptions.
