The following method is supposed to compare the start time, the end time, and duration of one course to another course but as I use the parameter instance(Course othercourse), it is giving out a cannot find symbol compiler error in Java and I do not understand why. Course.java follows as below.
import java.util.*;
public class Course{
private String name; // ie: CS142, CS141, ENG 101
private String instructor; // ie: John Mill, Bob the Fish
private String room; // ie: 127A, 18-218, the bathroom
private int time; // in military notation. ie: 1030, 1600 etc
private int length; // length in minutes. 50 means the course
// lasts 50 minutes.
// name: init
// desc: reads in entries for the members from the user
// params: Scanner scan
// return: void
// 1) for each member do steps 2-3.
// 2) prompt the user to enter a value
// 3) read in that value and store in the member
public void init(Scanner scan){
//Step 1-Done
//Steps 2 and 3
System.out.print("Please enter in a name: ");
name = scan.next();
System.out.print("Please enter in an instructor: ");
instructor = scan.next();
System.out.print("Please enter in a room: ");
room = scan.next();
System.out.print("Please enter in a time: ");
time = scan.nextInt();
System.out.print("Please enter in a length of time: ");
length = scan.nextInt();
}
// name: conflict
// desc: returns true if this course conflicts with the parameter
// params: Course othercourse
// return: boolean - true if the courses conflict
// 1) if this course and othercourse start at the same time, return true
// 2) calculate the end time of this course ( start time + length/60*100 +
// length % 60 )
// 3) calculate the end of the othercourse
// 4) if this course starts after other course, and starts before
// the other course ends, return true
// 5) if the other course starts after this course, and starts before
// this course ends, return true
// 6) return false
public boolean conflict(Course othercourse){
double end_time;
//Step 1
if(time == othercourse.time)
return true;
//Step 2
end_time = (double) time + length/ 60 * 100 + length % 60;
//Step 3
othercourse.end_time = (double) othercourse.time + othercourse.length/ 60 * 100 + othercourse.length % 60;
//Step 4
if(time+length > othercourse.time+othercourse.length && time+length < othercourse.end_time)
return true;
//Step 5
if(othercourse.time+length > time+length && othercourse.time+length < end_time)
return true;
//Step 6
return false;
}
// name: print
// desc: returns a string that represents some basic info about the course
// params: none
// return: String
// 1) return a string of the format "Course " + name + " with start time " +
// time
public String print(){
return "Course: "+name+" with start time: "+time;
}
}//End Class
Basically, this.anything or othercourse.anything is a cannot find symbol error. When I use the parameter's instance, it the compiler isn't liking it. Any help is greatly appreciated. Thanks in advance.
