Bubblesort the arguments given via the command line

BSort.java

// Usage:
// > java BSort Petra Bob Peter Adam Zap John Adam
// Adam Adam Bob John Peter Petra Zap

class BSort {
    public static void main(String[] args) {
        bubbleSortSmart(args);
        for(String arg : args) System.out.print(arg + " ");
        System.out.println();
        System.exit(0);

    }
    static void bubbleSortSmart(String[] a) {
        int newIdx = a.length - 1;
        int oldIdx = 0;
        while(newIdx != oldIdx) {
            oldIdx = newIdx;
            for(int i = 0; i < oldIdx; i++) {
                if (a[i].compareTo(a[i+1]) > 0) {
                    String tmp = a[i];
                    a[i] = a[i+1];
                    a[i+1] = tmp;
                    newIdx = i;
                }
            }
        }
    }
    static void bubbleSortNaive(String[] a) {
        int maxIdx = a.length - 1;
        while(maxIdx != 0) {
            for(int i = 0; i < maxIdx; i++) {
                if (a[i].compareTo(a[i+1]) > 0) {
                    String tmp = a[i];
                    a[i] = a[i+1];
                    a[i+1] = tmp;
                }
            }
            maxIdx--;
        }
    }
}