158 CMPG 211 1-1 V 2021 Expand All Next Week 6Practical: Objects, Arrays & Text files Main page content Objects, Arrays and Text files - Week 6 Resources Textbook: Laing, Chapter 10 & 12 Understand Java Read Par 10.6 on Array as instance field (p. 376) Read Par 12.10 and Par 12.11 on the File class (pp. 473 - 476) Read Par 10.10 on the String class and using the split method (p. 387) Read Par 12.1 - 12.6 on Exception handling (pp. 450 - 467) Task 1Click to expand Task 2 - AssignmentClick to collapse Task 2 - Assignment Write a Java program called Process marks (using files). The program must read the marks of students from a text file and process the marks. The results must be saved in a text file called result. 2.1 Write a Student class with the following instance fields: Name of student arrMarks (integer) // 4 marks out of 100 The class must contain a parameterised constructor and get methods for the two instance fields. Write a method called calcAve() to calculate and return the average mark. Write a method called didPass() to determine whether the student passes the module with an average of at least 50%. Return the word Pass or Fail. Write a toString() method to construct and return the following string of student data: Name of student 4 marks Peter Sampson 40 50 40 30 2.2 Create a text file called marks. Save the text file in the project folder. Example of the content: Peter Sampson#40#50#40#30 Diane Wilson#78#89#66#55 James Dube#87#98#78#88 2.3 Create a class called FileMethods. Write a readFile method to read the data from the marks text file into an array of Student objects. Write a writeFile method to write the name of the student, the student's average mark, and whether they pass the module or not to the text file called result. Example of text file content: Peter Samson 40 Fail Write get methods (accessors) for the array of objects and the counter variable. 2.4 Write a test class to call the methods. Write a static displayData() method to display the content of the array. Example of output: List of students Name Marks Ave Result Peter Sampson 40 50 40 30 40 Fail

158 CMPG 211 1-1 V 2021 Expand All Next Week 6Practical: Objects, Arrays & Text files Main page content Objects, Arrays and Text files - Week 6 Resources Textbook: Laing, Chapter 10 & 12 Understand Java Read Par 10.6 on Array as instance field (p. 376) Read Par 12.10 and Par 12.11 on the File class (pp. 473 - 476) Read Par 10.10 on the String class and using the split method (p. 387) Read Par 12.1 - 12.6 on Exception handling (pp. 450 - 467) Task 1Click to expand Task 2 - AssignmentClick to collapse Task 2 - Assignment Write a Java program called Process marks (using files). The program must read the marks of students from a text file and process the marks. The results must be saved in a text file called result. 2.1 Write a Student class with the following instance fields: Name of student arrMarks (integer) // 4 marks out of 100 The class must contain a parameterised constructor and get methods for the two instance fields. Write a method called calcAve() to calculate and return the average mark. Write a method called didPass() to determine whether the student passes the module with an average of at least 50%. Return the word Pass or Fail. Write a toString() method to construct and return the following string of student data: Name of student 4 marks Peter Sampson 40 50 40 30 2.2 Create a text file called marks. Save the text file in the project folder. Example of the content: Peter Sampson#40#50#40#30 Diane Wilson#78#89#66#55 James Dube#87#98#78#88 2.3 Create a class called FileMethods. Write a readFile method to read the data from the marks text file into an array of Student objects. Write a writeFile method to write the name of the student, the student's average mark, and whether they pass the module or not to the text file called result. Example of text file content: Peter Samson 40 Fail Write get methods (accessors) for the array of objects and the counter variable. 2.4 Write a test class to call the methods. Write a static displayData() method to display the content of the array. Example of output: List of students Name Marks Ave Result Peter Sampson 40 50 40 30 40 Fail

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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Main page content

Objects, Arrays and Text files - Week 6

Resources

Textbook: Laing, Chapter 10 & 12

Understand Java

Read Par 10.6 on Array as instance field (p. 376)
Read Par 12.10 and Par 12.11 on the File class (pp. 473 - 476)
Read Par 10.10 on the String class and using the split method (p. 387)
Read Par 12.1 - 12.6 on Exception handling (pp. 450 - 467)

Task 1Click to expand

Task 2 - AssignmentClick to collapse

Task 2 - Assignment

Write a Java program called Process marks (using files). The program must read the marks of students from a text file and process the marks. The results must be saved in a text file called result.

2.1 Write a Student class with the following instance fields:

Name of student
arrMarks (integer) // 4 marks out of 100

The class must contain a parameterised constructor and get methods for the two instance fields.

Write a method called calcAve() to calculate and return the average mark.

Write a method called didPass() to determine whether the student passes the module with an average of at least 50%. Return the word Pass or Fail.

Write a toString() method to construct and return the following string of student data:

Name of student 4 marks

Peter Sampson 40 50 40 30

2.2 Create a text file called marks. Save the text file in the project folder.

Example of the content:

Peter Sampson#40#50#40#30

Diane Wilson#78#89#66#55

James Dube#87#98#78#88

2.3 Create a class called FileMethods.

Write a readFile method to read the data from the marks text file into an array of Student objects.
Write a writeFile method to write the name of the student, the student's average mark, and whether they pass the module or not to the text file called result.
- Example of text file content:

Peter Samson 40 Fail

Write get methods (accessors) for the array of objects and the counter variable.

2.4 Write a test class to call the methods. Write a static displayData() method to display the content of the array.

Example of output:

List of students

Name Marks Ave Result

Peter Sampson 40 50 40 30 40 Fail

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