英文:
how is the following expressions **2.0+"2"** evaluated step by step in Java? and how is it different from **2+"2"**?
问题
在Java中，数字会自动转换为字符串，因此 2+"2" 的结果为 22... 但是为什么 2.0+"2" 的结果却是 2.02...
这是我正在学习的地方：
https://www.coursera.org/learn/cs-programming-java/lecture/o5IxV/type-conversion
英文:
in java a number is automatically converted into a string ,hence 2+"2" evaluates to 22...
but why does 2.0+"2" evaluates to 2.02..
Here's where i m learning from
https://www.coursera.org/learn/cs-programming-java/lecture/o5IxV/type-conversion
答案1
得分: 3
当您将任何内容与String连接在一起时，不是String的内容必须转换为String。所以2.0+"2"变成了"2.0" + "2"，而2+"2"变成了"2"+"2"。
英文:
When you concatenate anything with a String, the thing that isn't a String must be converted to one. So 2.0+"2" is "2.0" + "2" and 2+"2" is "2"+"2".
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