java 在Java中打印任何给定类的类层次结构

Posted 2021-05-07

int printClassHierarchy(Class classObj) {
    final int OFFSET = 2;
    if (classObj != null) {
        int ancestors = printClassHierarchy(classObj.getSuperclass());
        System.out.format("%" + (classObj.getName().length() + ancestors*OFFSET) + "s%n",
                classObj.getName());
        return 1 + ancestors;
    }
    return 0;
}