Using compareTo and Collections.sort

Question

I have a franchise class with owner(owner of franchise\'s name), state(2-character string for the state where the franchise is located), and sales (total sales for the day)<

Answer 1

You have to modify your compareTo method. Cause you are returning after comparing the state. So you have to compare state but sales too.

For example:

public int compareTo(Franchise that) {
    int stateComparition = this.getState().compareTo(that.getState()); 
    Double sales = Double.valueOf(this.getSales());    
    Double thatSales = Double.valueOf(that.getSales());
    int salesComparition = sales.compareTo(thatSales);    

    if(stateComparition == 0){
        if(salesComparition > 0)
             return -1;
        else if(salesComparition < 0)
             return 1;
        else
             return 0;
    }
       return stateComparition;         
}