Implicit super constructor Object() is undefined for default constructor. Must define an explicit constructor解决方案:把Java的类库加载进去,在工程上右键选择属性->JavaBuild Path的Libraries->Add Library选择JRE System Library->点击Next->选择Execution environment并选择版本或workspac…
转 http://blog.sina.com.cn/s/blog_825b7d7c0102w7rq.html (2016-07-02 11:38:38) 分类: javaWeb 电脑换了不同版本的Tomcat和JDK后,导入之前的项目出现红叉错误,程序却没有出现错误:在eclipse的markers标签页下提示2个错误警告:错误一:Description Resource Path Location Type Java compiler level does not match the ve…