摘要:
//在直接获得List里面的对象之后直接修改对象就可以了A test = new A(); test.a = 1; test.b = 1; List list = new ArrayList(); list.add(test);//加到List里 A test2 = (A) list.get(0); 阅读全文
摘要:
public int renameFile(String file, String toFile) { File toBeRenamed = new File(file); if ((!(toBeRenamed.exists())) || (toBeRenamed.isDirectory())) { System.out.prin... 阅读全文
摘要:
需要根据时间进行查询这段时间洗了多少次车SELECT wx.UserName AS '用户名称', wx.Telephone AS '手机号', IFNULL(TotalCarCount,0) AS '共洗车次数', IFNULL(BigCarCount,0) AS '大车洗车次数', IFNULL(SmallCarCount,0) AS '小车洗车次数', IFNULL(count(Was... 阅读全文