java 小技巧

1. 打印数组：System.out.printIn(Arrays.toString(a));
2. 打印二维数组：System.out.printIn(Arrays.deepToString(a));
3. 在编写返回为数组的方法时，碰巧结果为空，可以创建一个长度为0的数组：new elementType[0];
4. 数组排序：Arrays.sort(a);//使用快排

@Autowired    private YEquipmentDaoImpl yEquipmentDao;

等价于

private YEquipmentDaoImpl yEquipmentDao;public YEquipmentDaoImpl getyEquipmentDao() {    return yEquipmentDao;}@Autowiredpublic void setyEquipmentDao(YEquipmentDaoImpl yEquipmentDao) {    this.yEquipmentDao = yEquipmentDao;}