String[]字符串数组，按字典顺序排列大小

package ltb6w1;

public class WordSort1 {

    private String[] a= {"hello","world","welcome","hi","hey"};
    private int w;
    private int q;

    public WordSort1() {

        for(int i=0;i<a.length-1;i++) {

            for(int j=i+1;j<a.length;j++) {

                if(a[i].compareTo(a[j])>0) {

                    w=i;
                    q=j;

                    getWordSort(a[i],a[j]);

                }

            }
        }
    }

    public  void getWordSort(String ai,String aj) {

        String temp;
        temp=ai;
        a[w]=aj;
        a[q]=temp;

    }

    public void printSort() {

         for(String s:a) {

             System.out.print(s+" ");
         }
    }
    public static void main(String[] args) {

       WordSort1 ws=new WordSort1();
       ws.printSort();
    }

}