Java println语句中带有字符串的+符号的含义 [英] Meaning of + symbol with Strings in Java println statement

问题描述

我是Java的新手。以下是什么意思？

I'm new to Java. What does the below mean?

（加法）+登录 println

System.out.println（计数是：+ i）;

推荐答案

加号运算符具有双重含义。它也是一个连接运算符。由于Count is：类型为 String ，i（ Integer ？）将转换为字符串以及。

The plus operator has a double meaning. Its a concatination operator as well. As the "Count is:" is of type String the "i" (Integer?) is converted to a String as well.

我没看过它，因为我更喜欢参考书，但有些人真的喜欢这本书< a href =http://rads.stackoverflow.com/amzn/click/0596009208 =nofollow> Head First Java ，因为它似乎解释了概念。

I haven't read it as I prefer reference books, however some really like the Book Head First Java as it seems to explain concepts.

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