If you're writing output to a binary file, what classes do you use to do this? What classes do you use to read data from a binary file and how do you do it?
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If you're writing output to a binary file, what classes do you use to do this? What classes do you use to read data from a binary file and how do you do it?
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- When you open a file for reading, what happens if the file does not exist? When you open a file for writing, what happens if the file already exists?Instructions The history teacher at your school needs help in grading a True/False test. The students’ IDs and test answers are stored in a file. The first entry in the file contains answers to the test in the form:TFFTFFTTTTFFTFTFTFTTEvery other entry in the file is the student ID, followed by a blank, followed by the student’s responses. For example, the entry:ABC54301 TFTFTFTT TFTFTFFTTFTindicates that the student ID is ABC54301 and the answer to question 1 is True, the answer to question 2 is False, and so on. This student did not answer question 9. The exam has 20 questions, and the class has more than 150 students. Each correct answer is awarded two points, each wrong answer gets one point deducted, and no answer gets zero points. Write a program that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score, followed by the test grade. Assume the following grade scale:90%–100%, A; 80%–89.99%, B; 70%–79.99%, C; 60%–69.99%,…Instructions The history teacher at your school needs help in grading a True/False test. The students’ IDs and test answers are stored in a file. The first entry in the file contains answers to the test in the form:TFFTFFTTTTFFTFTFTFTTEvery other entry in the file is the student ID, followed by a blank, followed by the student’s responses. For example, the entry:ABC54301 TFTFTFTT TFTFTFFTTFTindicates that the student ID is ABC54301 and the answer to question 1 is True, the answer to question 2 is False, and so on. This student did not answer question 9. The exam has 20 questions, and the class has more than 150 students. Each correct answer is awarded two points, each wrong answer gets one point deducted, and no answer gets zero points. Write a program in C++ that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score, followed by the test grade. Assume the following grade scale:90%–100%, A; 80%–89.99%, B; 70%–79.99%, C;…
- Virus DNA files As a future doctor, Jojo works in a laboratory that analyzes viral DNA. Due to the pandemic During the virus outbreak, Jojo received many requests to analyze whether there was any viral DNA in the patient. This number of requests made Jojo's job even more difficult. Therefore, Jojo ask Lili who is a programmer for help to make a program that can read the file containing the patient's DNA data and viral DNA and then match them. If on the patient's DNA found the exact same string pattern, then write to the index screen the found DNA. Data contained in the file testdata.in Input Format The first line of input is the number of test cases TThe second row and so on as many as T rows are the S1 string of patient DNA and the S2 string of viral DNA separated by spaces Output Format The array index found the same string pattern. Constraints 1 ≤ T ≤ 1003 ≤ |S2| ≤ |S1| ≤ 100|S| is the length of the string.S will only consist of lowercase letters [a-z] Sample Input (testdata.in)…Java Problem The teacher at a school needs help grading an exam with a number of True/False questions. The students’ IDs and test answers are stored in a file. The first entry of the file contains the answer to the test in the form: TTFTFTTTFTFTFFTTFTTF Every other entry in the file is the student’s ID, followed by a blank, followed by the students’ response. For instance, the entry: ABC54102 T FTFTFTTTFTTFTTF TF The student’s ID is ABC54102, answer to question 1 is True, the answer to question 3 is False. Also, the student did not answer question 2 and question 18. The exam has 20 questions. Here is the grading policy: each correct answer is awarded two points, each wrong answer get -1 point, and no answer gets 0 point. Write a program that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score (total points), followed by the test grade. Assume the following grade scale will be used: 90%-100%, A; 80%-89.99%, B; 70%-79.99%,…Write a complete java program that: asks the user for a file name tests whether the file exists and tells the user if it does exist asks the user whether it should be deleted. Either delete or do not delete the file based on the user input. If they don't delete, ask them if they would like to write to the file If they want to write, ask what they want to write to the file and write it. Make sure to provide plenty of console output dialog specifying what status/actions are taken at each step.
- PLEASE ASK THE USER IF THEY WOULD LIKE TO WRITE INTO THE FILE IF THEY CHOOSE NOT TO DELETE THE FILE, AND WRITE IT INTO THE FILE Write a complete java program that: asks the user for a filename tests whether the file exists and tells the user if it does exist ask the user whether it should be deleted. Either delete or do not delete the file based on the user input. If they don't delete it, ask them if they would like to write to the file If they want to write, ask what they want to write to the file and write it. Make sure to provide plenty of console output dialog specifying what status/actions are taken at each step.Java Program: Make sure that names are able to be written to a binary file via aserializable interfaceJava: OverviewIn this task, you will read data from a text file, process the loaded data, and then save the processed data to a new text file. The purpose is to teach you to read from and save to text files.TaskStatistics department in Germany has made forecasts of what Germany's population will look like by 2050, distributed by age and gender. The text file (population2050.txt) contains statistics on the estimated population for the year 2050. The figure below shows the first 16 lines of the file. First comes a line that shows which age group the information applies to. This is followed by a row with information on the number of men in that age group, followed by a row with the number of women in that age group. In total, the file contains information for the age groups 0 to 105 and the information about each age group extends over three lines as shown. The rows with information about the number of men and women are formatted using one or more spaces. Your task is to write a java…
- Using Java PrintWriter, write a program that prompts the user for information and saves it to a text file File name is musicians.txt Use this information below: George,Thoroughgood,54321 Ludwig,Van Beethoven,90111 Edward,Van Halen,12345What classes do you use to read data from a file?JAVA PPROGRAM Write a program that prompts the user to enter a file name, then opens the file in text mode and reads names. The file contains one name on each line. The program then compares each name with the name that is at the end of the file in a symmetrical position. For example if the file contains 10 names, the name #1 is compared with name #10, name #2 is compared with name #9, and so on. If you find matches you should print the name and the line numbers where the match was found. While entering the file name, the program should allow the user to type quit to exit the program. If the file with a given name does not exist, then display a message and allow the user to re-enter the file name. The file may contain up to 100 names. You can use an array or ArrayList object of your choosing, however you can only have one array or ArrayList. Input validation: a) If the file does not exist, then you should display a message "File 'somefile.txt' is not found." and allow the…