已采納回答 / 慕粉1464004687
需要復習Goddess的toString()方法。默認是Object類的toString()實現。//Object類中實現如下:public String toString() { return getClass().getName() + "@" + Integer.toHexString(hashCode());? ? }<...code...>
2016-06-26
最贊回答 / qq_與贈_03193390
因為你的create_user是string類型所以不賦值也可以默認為null,你的其他屬性沒賦值就報錯是因為你沒有給int類型的參數賦值,因為int類型沒有默認值你必須得給他賦值,如果沒有就會顯示空指針異常,希望對你有所幫助。
2016-06-21
最新回答 / 信息變革時代
Your variable 'i' goes from 0 to 189, and is fed to the method that
reads the cells from the spreadsheet. ?Does the spreadsheet have that
many rows? ?Be aware that the fact that rows appear in the spreadsheet
program does not necessarily mean that the ...
2016-06-13