小编lwp*_*ro2的帖子

for example, I have queries select id, name, age, address from staffs, instead of having a list of Staff object. I'd prefer to have a list of maps, as

list{
  map{
    ("id", 123),
    ("name","jackie"),
    ("address", "canada"),
    ("age",26)
  }
  map{
    ("id", 126),
    ("name","james"),
    ("address", "canada"),
    ("age",27)
  }

}

is that possible, and how to do that, if possible? Thanks.

任何人都有任何想法,为什么== 标志适用于.class比较？

另外,getClass()方法的javadoc为

返回此Object的运行时类.返回的Class对象是由所表示的类的静态同步方法锁定的对象.

实际结果的类型是Class<? extends |X|>其中|X|是静态类型上其表达的擦除getClass()被调用.例如,此代码片段中不需要强制转换:

Number n = 0; 
Class<? extends Number> c = n.getClass();

"静态同步方法锁定的对象"是什么意思？