杂记

父级引用指向对象

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * @author pengyl
 * @date 2022/5/23 13:49
 * @description TestClass
 */
public class TestClass {
    @Test
    public void test1() {
        ChildClass c = new ChildClass();
        c.print();
    }
}

class BaseClass{
    protected Logger logger = LoggerFactory.getLogger(this.getClass());
}

class ChildClass extends BaseClass {
    public void print() {
        logger.info("xxxxxxxxxxxxxxxx");
    }
}

输出结果：