Java面试final 的相关内容

【Java面试】为什么匿名内部类只能访问外部类的final类型局部变量？

先来看一下下面一段代码public class InnerClassTest { public static void main(String[] args) { int a = 10; new Service() { @Override public void method() { ...

Java 最常见的面试题：hibernate 实体类可以被定义为 final 吗？

可以将Hibernate的实体类定义为final类，但这种做法并不好。因为Hibernate会使用代理模式在延迟关联的情况下提高性能，如果你把实体类定义成final类之后，因为 Java不允许对final类进行扩展，所以Hibernate就无法再使用代理了，如此一来就限制了使用可以提升性能的手段。不...

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Java 最常见的面试题：final、finally、finalize 有什么区别？

final可以修饰类、变量、方法，修饰类表示该类不能被继承、修饰方法表示该方法不能被重写、修饰变量表示该变量是一个常量不能被重新赋值。finally一般作用在try-catch代码块中，在处理异常的时候，通常我们将一定要执行的代码方法finally代码块中，表示不管是否出现异常，该代码块都会执行，一...

Java 最常见的面试题：final 在 java 中有什么作用

final 修饰的类叫最终类，该类不能被继承。final 修饰的方法不能被重写。final 修饰的变量叫常量，常量必须初始化，初始化之后值就不能被修改。

[Java基础面试题一]深入谈谈final、finally、 finalize 有什么不同？吊打面试官

[Java基础面试题一]深入谈谈final、finally、 finalize 有什么不同？吊打面试官文章目录一、前言二、典型回答三、深入谈final四、深入谈finally五、深入谈finalize六、总结一、前言作为Java后端开发者,小编在面试过程中90%都会问到的Java基础面试题: fin...

Java面试（static 关键字）(final关键字)

staticstatic 是 Java 中⾮常重要的关键字，static 表示的概念是静态的，在 Java 中，static 主要⽤来修饰变量，static 修饰的变量称为静态变量、也称为类变量，类变量属于类所有，对于不同的类来说，static 变量只有⼀份，static ...

常见Java面试题抽象类能使用 final 修饰吗？

不能。定义抽象类就是让其他类继承的，如果定义为 final 该类就不能被继承，这样彼此就会产生矛盾，所以 final 不能修饰抽象类。可以自己试试，一般的编译器也会提示错误的。

Java面试-final的内存语义

上篇介绍了锁和volatile的内存语义，本文讲述的是final的内存语义，相比之下，final域的读和写更像是普通变量的访问。1、final域的重排序规则final对于final域编译器和处理器遵循两个重排序规则在构造函数内对一个final域的写入，与随后把这个对象的引用赋值给另一个引用变量，这两...

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