the import cannot be resolved遇到一些错：全部都类似于 1.Java的基础API包 The import java.util cannot be solved.2.项目已经开发好的包 The import com.thu.thunet.thu_core cannot be solved.开发工具是德国一家公司在Eclips

The import com.mysql cannot be resolved代码如下 java.lang.Error:Unresolved compilation problems 这是什么问题,怎么改正?java.lang.Error:Unresolved compilation problems:The import org.wltea cannot be resolved The import org.wltea cannot be resolved IKSegmenter cannot be resolved to a type I the import cannot be resolved遇到一些错：全部都类似于 1.Java的基础API包 The import java.util cannot be solved.2.项目已经开发好的包 The import com.thu.thunet.thu_core cannot be solved.开发工具是德国一家公司在Eclips Cannot find import;Dll may be missing ,corrupt,or,wrong version Filegbengine.dllerror 1157 Cannot find import:DLL may be missing,corrupt,or wrong version Filebinkw32.dll,error126是什么意思 cannot find import DLL may be missing corrupt or wrong version File binkw32.dkk error126 Cannot find import:DLL may be missing,corrupt,or wrong version Fie,error 126 The page cannot be found The resource cannot be found. The specified URL cannot be The specified URL cannot be the battery cannot be identff The resource cannot be found. cannot find import:dll may be missing,corrupt,or wrong version filemovietex什么问题. 急!谢了! cannot find import;dll may be missing, corrupt, or wrong version fileijl15.dll,error 126这是什么意思 The page cannot be found 汉语意思 The specified URL cannot be found the following breakpoint cannot be set