Java一行变量声明？ [英] Java one line variable declaration?

问题描述

在我的Java类中，我声明这样的变量

In my Java class i am declaring variable like this

BigDecimal sumFeeBilled = new BigDecimal(0), sumPaid = new BigDecimal(0); 

或者我们必须在多行中声明这样

Or we have to declare like this in multiple line

BigDecimal sumFeeBilled = new BigDecimal(0);
BigDecimal  sumPaid = new BigDecimal(0);

我们应该遵循哪一个？

推荐答案

这只是品味和偏好的问题。但是，如果你没有设定指导方针，它将成为大多数开发团队中无休止的辩论/争论的温床，与Vim vs Emacs或IntelliJ vs Eclipse一起。

This is simply a matter of taste and preference. However if you don't set guidelines it will become a hotbed of endless debate/arguments in most development teams, alongside Vim vs Emacs or IntelliJ vs Eclipse.

我想做什么建议为您的团队设置编码标准，最简单的方法是引用已存在的标准，例如Sun（现在的Oracle）Java指南，在这种情况下建议每行使用一个声明。

What I would recommend is setting coding standards for your team, and the simplest way to do this is to reference already-existing ones such as the Sun (now Oracle) Java Guidelines which in this case suggest using one declaration per line.

这里有Sun的权威指南关于声明的说法[1]：

Here what Sun's definitive guide says about declarations[1]:

建议每行一个声明，因为它鼓励评论。换句话说，

One declaration per line is recommended since it encourages commenting. In other words,

int level; // indentation level
int size;  // size of table

优先于

int level, size;

不要在同一行上放置不同的类型。示例：

Do not put different types on the same line. Example:

int foo,  fooarray[]; //WRONG!

[1] http://www.oracle.com/technetwork/java/javase/documentation/codeconventions-141270.html#2991

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