在eclipse导入项目，出现The import java.time cannot be resolved错误

Question

<%@page import="java.time.YearMonth"%> The import java.time cannot be resolved<%@page import="javafx.scene.chart.PieChart.Data"%>The import javafx cannot be resolvedimport javax.security.auth.message.callback.PrivateKeyCallback.Request;  The import javax.security.auth.message cannot be resolved

Answer 1

java.time这个包是jdk 1.8引入的，如果找不到，检查jdk版本

javafx是非标准java包，检查安装的java是否带有此扩展部分

javax系列，很多是属于扩展包，需要额外安装支持