--> 在 Java 中是什么意思？
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What does --> means in Java?
提问by TigerHix
for (int i = 99; i --> 0;) {
System.out.println(i);
}
Above code works, and has the exactly same result of
上面的代码有效，并且具有完全相同的结果
for (int i = 99; i >= 0; i--) {
System.out.println(i);
}
What does the syntax "-->" originally mean in Java? Since almost reachable search engines disallow special characters, I cannot seem to find the answer.
语法“-->”在Java中最初是什么意思？由于几乎可访问的搜索引擎不允许使用特殊字符，因此我似乎无法找到答案。
回答by shauryachats
-->is not a new operator.
-->不是新的运营商。
It is just a conjunctionof the operators --and >.
这仅仅是一个结合了运营商的--和>。
You first compare, and then decrement the variable.
您首先比较，然后递减变量。
That is,
那是，
i --> 0
becomes effectively
变得有效
i > 0; //Compare
i--; //and decrement
回答by Eran
i --> 0means i-- > 0, i is decrememnted and the previous value of iis compared to 0.
i --> 0意味着i-- > 0， i 被递减，并且之前的值与i进行比较0。
回答by Rahul Tripathi
-->is not any operator. It is just the cocatenation of --and >.
-->不是任何运营商。它只是--and的串联>。
So when you write
所以当你写
i-->0it means compare the value of iand then decrement it.
i-->0这意味着比较的值i然后递减它。
So for better readability it can be written as
所以为了更好的可读性，它可以写成
for (int i = 99; (i--)> 0;) {
回答by Mehmood Arbaz
notice here the increment/decrement place is not appeared. So it decrement iby 1 and compare it with 0.
注意这里没有出现递增/递减的地方。所以它减i1并与0比较。
The comparison check whether iis greater than 0 after the decrement performed.
i执行递减后比较检查是否大于0。
回答by silentprogrammer
i-- > 0
i-- > 0
i--is post decrement
i--后递减
>is greater than
>大于
for (initializatin; boolean expression;updation){
}
So you did initialization and but you checked boolean expression and updated in one step so it worked.
所以你做了初始化，但你检查了布尔表达式并一步更新，所以它起作用了。
回答by Prashant
there is no any operator -->its simply i-- > 0first it will do post decrements.
then it will check condition and compare with 0whether its greater than are not.
没有任何运算符-->它只是i-- > 0首先它会做后减量。然后它会检查条件并比较它0是否大于。
Remember i's value will not be changed while comparison (i will be 1) after comparison it will decrements the value (i will now be 0) and print.
请记住，比较时 i 的值不会更改（i 将为 1），比较后它将递减值（i 现在为 0）并打印。
