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thod that handles input/ its header public void createFile () //Insert throws clause for handing an IO (input/output) exception. { System.out.printf("ènEnter the file name for test scores " + " (WARNING: This will erase a pre-existing file!): ") : fileName - input.nextLine () ; //Complete creating the PrintWriter outputFile, which has already been partially declared at the class level. }//END Method 4. Code a setDouble method that will only handle an exception inside its body, allow the user to re-input a double, and write the double value to a file. public void setDouble () { //Declare cont as a boolean and initialize to default value. int noTestScores - 0, count - 0; System.out.printf("ènHow many test scores will be entered? while (!input.hasNextInt()) { input.nextLine (); ") : System.out.printf("ènInvalid integer value! Try again. en"); }//END while NOT an integer noTestScores - input.nextInt (): do { //Beginning of block that attempts code that might throw exceptions. System.out.printf("+nEnter test score ed: ", count + 1); aDouble - input.nextDouble () ; •printf("ef, ", aDouble); //Write test score to the output file. count++; if(count - noTestScores) { cont - false: }//END if count equals noTestScores //END block

thod that handles input/ its header public void createFile () //Insert throws clause for handing an IO (input/output) exception. { System.out.printf("ènEnter the file name for test scores " + " (WARNING: This will erase a pre-existing file!): ") : fileName - input.nextLine () ; //Complete creating the PrintWriter outputFile, which has already been partially declared at the class level. }//END Method 4. Code a setDouble method that will only handle an exception inside its body, allow the user to re-input a double, and write the double value to a file. public void setDouble () { //Declare cont as a boolean and initialize to default value. int noTestScores - 0, count - 0; System.out.printf("ènHow many test scores will be entered? while (!input.hasNextInt()) { input.nextLine (); ") : System.out.printf("ènInvalid integer value! Try again. en"); }//END while NOT an integer noTestScores - input.nextInt (): do { //Beginning of block that attempts code that might throw exceptions. System.out.printf("+nEnter test score ed: ", count + 1); aDouble - input.nextDouble () ; •printf("ef, ", aDouble); //Write test score to the output file. count++; if(count - noTestScores) { cont - false: }//END if count equals noTestScores //END block

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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3. Code a createFile method that handles input/output exceptions through its header. public void createFile () //Insert throws clause for handing an I0 (input/output) exception. { System.out.printf("%nEnter the file name for test scores " + "(WARNING: This will erase a pre-existing file!): ") : fileName = input.nextLine () ; //Complete creating the PrintWriter outputFile, which has already been partially declared at the class level. }//END Method 4. Code a setDouble method that will only handle an exception inside its body, allow the user to re-input a double, and write the double value to a file. public void setDouble () { //Declare cont as a boolean and initialize to default value. int noTestScores = o, count = 0; System.out.printf("%nHow many test scores will be entered? ") ; while (!input.hasNextInt ()) { input.nextLine () ; System.out.printf ("&nInvalid integer value! Try again.%n"); }//END while NOT an integer noTestScores = input.nextInt () ; do { //Beginning of block that attempts code that might throw exceptions. { System.out.printf("&nEnter test score %d: ". count + 1) ; aDouble = input.nextDouble () ; .printf("&f, ", aDouble) : //Write test score to the output file. count++; if(count == noTestScores) { cont = false; }//END if count equals noTestScores }//END block
Transcribed Image Text:3. Code a createFile method that handles input/output exceptions through its header. public void createFile () //Insert throws clause for handing an I0 (input/output) exception. { System.out.printf("%nEnter the file name for test scores " + "(WARNING: This will erase a pre-existing file!): ") : fileName = input.nextLine () ; //Complete creating the PrintWriter outputFile, which has already been partially declared at the class level. }//END Method 4. Code a setDouble method that will only handle an exception inside its body, allow the user to re-input a double, and write the double value to a file. public void setDouble () { //Declare cont as a boolean and initialize to default value. int noTestScores = o, count = 0; System.out.printf("%nHow many test scores will be entered? ") ; while (!input.hasNextInt ()) { input.nextLine () ; System.out.printf ("&nInvalid integer value! Try again.%n"); }//END while NOT an integer noTestScores = input.nextInt () ; do { //Beginning of block that attempts code that might throw exceptions. { System.out.printf("&nEnter test score %d: ". count + 1) ; aDouble = input.nextDouble () ; .printf("&f, ", aDouble) : //Write test score to the output file. count++; if(count == noTestScores) { cont = false; }//END if count equals noTestScores }//END block
//Beginning of block that handles an input mismatch called e. input.nextLine () ; //Clear buffer. //Print "Invalid entry, try again!" //Set cont so loop re-enters when there's an exception. }//END block }while ( ); //Insert what is tested. }//END setDouble (): void 5. //Code Java statement that releases outputFile to avoid resource-leaks. 6. Which line of code throws the exception for the double? Enter a letter for the answer: A. while (!input.hasNextInt ()) fileName = input.nextLine () ; aDouble = input.nextDouble () : B. с.
Transcribed Image Text://Beginning of block that handles an input mismatch called e. input.nextLine () ; //Clear buffer. //Print "Invalid entry, try again!" //Set cont so loop re-enters when there's an exception. }//END block }while ( ); //Insert what is tested. }//END setDouble (): void 5. //Code Java statement that releases outputFile to avoid resource-leaks. 6. Which line of code throws the exception for the double? Enter a letter for the answer: A. while (!input.hasNextInt ()) fileName = input.nextLine () ; aDouble = input.nextDouble () : B. с.
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