如何获取Class的根路径

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package org.eve.framework.nuwatest.resource;

/**
 * @author xiayc
 * @date 2018/9/6
 */
public class ClassRootPath {
    public static void main(String[] args) {
        //获取ClassRootPath类的根路径
        System.out.println(ClassRootPath.class.getResource(""));
        //print file:/D:/Users/yc_xia/personalWorkSpace/nu-wa-demo/nu-wa-test/target/classes/org/eve/framework/nuwatest/resource/
        //获取所有类的根路径
        System.out.println(ClassRootPath.class.getResource("/"));
        //print file:/D:/Users/yc_xia/personalWorkSpace/nu-wa-demo/nu-wa-test/target/classes/
    }
}