// Chute that spews boxes:
class Chute {
    final int LOW = 1;   // min amount of boxes that the Chute can spew
    final int HIGH = 3;  // max amount of boxes that the Chute can spew
    Chute() { }          // create a new Chute
    
    // Precondition: Chute has not spewed boxes yet.
    // Postcondition: Chute spews random, but unlimited, amount of boxes:
    int spewBoxes() {

	_______________________________________________________ ;
    }

} // Class Chute

// Bin holds boxes that spew forth from Bin:
class Bin { 

    _____________________________ ; // amount of boxes currently in Bin

    _____________________________ ; // max number of boxes

    Bin() { }

} Class Bin   

// Worker takes boxes from Bin and places them in the Truck:
class Worker { 
    int id;        // Worker's identification
    String name;   // Worker's name

    ___________________________________________ ; // Worker's efficiency

    final int LOW = 1;  // minimum amount of boxes Worker will attempt to take
    final int HIGH = 3; // maximum amount of boxes Worker will attempt to take
    Worker() { }

    // Precondition: Worker has not extracted boxes yet.
    // Postcondition: Worker attempts to extract boxes from Bin:
    int extractBoxes() {
	
	______________________________________________________ ;
    }

} // Class Worker

// Truck holds boxes left over:
class Truck {

    _____________________________ ; // amount of boxes currently in Truck

} // Class Truck