项目右键,build path,configure build path,右面窗口的Libraries,add library...,jre system library。
2, eclipse配置jdk
window - preference - java - install jres -add -stander VM -directory
项目右键,build path,configure build path,右面窗口的Libraries,add library...,jre system library。
2, eclipse配置jdk
window - preference - java - install jres -add -stander VM -directory