Unbound classpath container: ‘JRE System Library [jdk1.8.0_202]‘ in project ‘xxx‘如何解决

1、问题原因
这个问题一般会出现在导入别人写好的项目时出现

2、解决方案
右键点击项目选择Build Path->Configure Build Path…
Unbound classpath container: ‘JRE System Library [jdk1.8.0_202]‘ in project ‘xxx‘如何解决
点击Add Library,选择JRE System Library
Unbound classpath container: ‘JRE System Library [jdk1.8.0_202]‘ in project ‘xxx‘如何解决
之后删除由unbound标记的即可
Unbound classpath container: ‘JRE System Library [jdk1.8.0_202]‘ in project ‘xxx‘如何解决