Student Records

[waldoruns]

I need help too figure out how to get the numbers 8, 9, 76,99 comment out of the code so when i run the program, that the user can input their own numbers.









public class StudentRecordDemo {

/**
* StudentRecordDemo main() is used to validate and verify
* that all of the methods and data members of the class
* do or contain what they are supposed.
*/
public static void main(String[] args) {
StudentRecord g1 = new StudentRecord();
g1.set(8, 9, 76, 99);
g1.writeOutput();
System.out.println("StudentRecordDemo done.");
}

public class StudentRecord {
// data members:
private int quiz1;
private int quiz2;
private int midterm;
private int finalExam;
private float finalGrade;
private char letterGrade;


// data methods:
/**
* StudentRecord.set() allows for the direct unverified input of data
* members of the class for use in testing and setting values.
*/
public void set(int q1, int q2, int mt, int fE) {
quiz1 = q1;
quiz2 = q2;
midterm = mt;
finalExam = fE;
finalGrade = computeFinalGrade();
letterGrade = computeLetterGrade();
}

public void writeOutput() {
System.out.println("Quiz 1 = " + quiz1);
System.out.println("Quiz 2 = " + quiz2);
System.out.println("Midterm Exam= " + midterm);
System.out.println("Final Exam = " + finalExam);
System.out.println("Final Grade = " + finalGrade + " or an ["
+ letterGrade + "]");
}

/**
* StudentRecord.computeFinalGrade() takes all test scores and provides the
* final computed class grade.
*/
private float computeFinalGrade() {
double tempGrade = 0.125 * (quiz1 * 10); // first quiz part
tempGrade += 0.125 * (quiz2 * 10); // second quiz part
tempGrade += 0.25 * midterm; // midterm part
tempGrade += 0.50 * finalExam; // final exam part
return (float) tempGrade;
}

/**
* StudentRecord.computeLetterGrade() provides correct letter grade for the
* final grade provided.
*/
private char computeLetterGrade()
{
char tempGrade = '?';
if (finalGrade >= 89.5)
tempGrade = 'A';
else if (finalGrade >= 79.5)
tempGrade = 'B';
else if (finalGrade >= 69.5)
tempGrade = 'C';
else if (finalGrade >= 59.5)
tempGrade = 'D';
else
tempGrade = 'F';
return tempGrade;
}
}

[r035198x]

I need help too figure out how to get the numbers 8, 9, 76,99 comment out of the code so when i run the program, that the user can input their own numbers.









public class StudentRecordDemo {

/**
* StudentRecordDemo main() is used to validate and verify
* that all of the methods and data members of the class
* do or contain what they are supposed.
*/
public static void main(String[] args) {
StudentRecord g1 = new StudentRecord();
g1.set(8, 9, 76, 99);
g1.writeOutput();
System.out.println("StudentRecordDemo done.");
}

public class StudentRecord {
// data members:
private int quiz1;
private int quiz2;
private int midterm;
private int finalExam;
private float finalGrade;
private char letterGrade;


// data methods:
/**
* StudentRecord.set() allows for the direct unverified input of data
* members of the class for use in testing and setting values.
*/
public void set(int q1, int q2, int mt, int fE) {
quiz1 = q1;
quiz2 = q2;
midterm = mt;
finalExam = fE;
finalGrade = computeFinalGrade();
letterGrade = computeLetterGrade();
}

public void writeOutput() {
System.out.println("Quiz 1 = " + quiz1);
System.out.println("Quiz 2 = " + quiz2);
System.out.println("Midterm Exam= " + midterm);
System.out.println("Final Exam = " + finalExam);
System.out.println("Final Grade = " + finalGrade + " or an ["
+ letterGrade + "]");
}

/**
* StudentRecord.computeFinalGrade() takes all test scores and provides the
* final computed class grade.
*/
private float computeFinalGrade() {
double tempGrade = 0.125 * (quiz1 * 10); // first quiz part
tempGrade += 0.125 * (quiz2 * 10); // second quiz part
tempGrade += 0.25 * midterm; // midterm part
tempGrade += 0.50 * finalExam; // final exam part
return (float) tempGrade;
}

/**
* StudentRecord.computeLetterGrade() provides correct letter grade for the
* final grade provided.
*/
private char computeLetterGrade()
{
char tempGrade = '?';
if (finalGrade >= 89.5)
tempGrade = 'A';
else if (finalGrade >= 79.5)
tempGrade = 'B';
else if (finalGrade >= 69.5)
tempGrade = 'C';
else if (finalGrade >= 59.5)
tempGrade = 'D';
else
tempGrade = 'F';
return tempGrade;
}
}

Please use code tags for posting code next time you want to post code.
For taking input from the user, you use java.util.Scanner.
Since it's in the util package, you import it first before you use it

import java.util.Scanner;

Then in your code you make the scanner as follows

Scanner input = new Scanner(System.in);

meaning that it will read from the console.

Here is how I would use it to read a double value:

System.out.println("Enter a double : ");
double myDouble  = input.nextDouble();