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java - 变量定义在外循环和内循环之间有区别吗?

转载 作者:行者123 更新时间:2023-12-05 00:42:41 25 4
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Possible Duplicate:
Difference between declaring variables before or in loop?

String str;
for (int i = 0; i < 10; i++) {
str = "Hello, World"; // Is str created only 1 time?
}

上面和下面有什么区别?如果它们不同,哪个更好?

for (int i = 0; i < 10; i++) {
String str = "Hello, World"; // Is str created 10 times?
}

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