如果你定义的类仅仅是包含了一些静态的方法和静态的字段，这些类一般是一些工具类，这些一般是设计为不能被实例化的。
1. Attempting to enforce noninstantiability by making a class abstract does not work.
2. a class can be made noninstantiable by including a private constructor
// Noninstantiable utility class public class UtilityClass { // Suppress default constructor for noninstantiability private UtilityClass() { throw new AssertionError(); } ... // Remainder omitted }
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/15970.html