关于编译器错误：String cannot be converted to int

Java - String cannot be converted to int

本问题已经有最佳答案，请猛点这里访问。

我有一个文本文件记录了12个月来的气温。但是当我试图找到平均温度时，我得到了错误"string cannot be converted to int"to the line

temp[counter] = sc.nextLine();

有人能说什么不对吗？

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Scanner sc = new Scanner(new File("temperatur.txt"));
int[] temp = new int [12];
int counter = 0;
while (sc.hasNextLine()) {
temp[counter] = sc.nextLine();
counter++;
}

int sum = 0;
for(int i = 0; i < temp.length; i++) {
sum += temp[i];
}

double snitt = (sum / temp.length);
System.out.println("The average temperature is" + snitt);

相关讨论

您需要将sc.nextline转换为int

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Scanner sc = new Scanner(new File("temperatur.txt"));

int[] temp = new int [12];
int counter = 0;

while (sc.hasNextLine()) {
String line = sc.nextLine();
temp[counter] = Integer.ParseInt(line);
counter++;
}

int sum = 0;

for(int i = 0; i < temp.length; i++) {
sum += temp[i];

}

double snitt = (sum / temp.length);

System.out.println("The average temperature is" + snitt);
}
}

scanner:：nextline返回一个字符串。在爪哇中，不能像您隐式地将字符串转换成int。

尝试

1	temp[counter] = Integer.parseInt(sc.nextLine());

sc.nextline()返回字符串

https://www.tutorialspoint.com/java/util/scanner_nextline.htm网站