Java this.getClass (). GetResourceAsStream ("/.") Unable to get the correct resource

getClass (). GetResourceAsStream ("/.") Unable to get the correct resource

public class A {
    public void test(){
        InputStream in = this.getClass().getResourceAsStream("/lang/zh_cn.lang");
        ...
    }
}

public class B extends A {
    ...
}

jarA.jar A/lang/zh_cn.lang 
jarB.jar B/lang/zh_cn.lang 
 B.test() InputStream  A jar
Mar.21,2021
Menu