我收到错误：- 错误：找不到符号 tofile.println("Dancing" + " " + danceminutes + " " + bpm); ^ 符号：变量 tofile 位置：类 CreateFile
我不确定为什么。
// writing to a file
PrintWriter toFile = new PrintWriter(new FileWriter("exLog.txt"));
Random randy = new Random();
int count = randy.nextInt(12) + 19;
for (int i = count; i > 0; i--) {
int exercise = randy.nextInt(3);
if (exercise == 0) {
int minutesOne = randy.nextInt(47) + 14;
int minutesTwo = randy.nextInt(62) + 59;
int minutesThree = randy.nextInt(122) + 119;
int roulette = randy.nextInt(100);
if (roulette <= 74) {
int runoneminutes = minutesOne;
double speed = 4.9 + (16.1 - 4.9) * randy.nextDouble();
double distance = speed * runoneminutes/60;
tofile.println("Running" + " " + runoneminutes + " " + distance);
}
else if (roulette > 74 && roulette < 96) {
int runtwominutes = minutesTwo;
double twospeed = 4.9 + (16.1 - 4.9) * randy.nextDouble();
double twodistance = twospeed * runtwominutes/60;
tofile.println("Running" + " " + runtwominutes + " " + twodistance);
}
else if (roulette >= 96) {
int runthreeminutes = minutesThree;
double threespeed = 4.9 + (16.1 - 4.9) * randy.nextDouble();
double threedistance = threespeed * runthreeminutes/60;
tofile.println("Running" + " " + runthreeminutes + " " + threedistance);
}
}
if (exercise == 1) {
int bikeminutesOne = randy.nextInt(62) + 29;
int bikeminutesTwo = randy.nextInt(212) + 89;
int bikeroulette = randy.nextInt(100);
if (bikeroulette <= 49) {
int bikeoneminutes = bikeminutesOne;
double bikeonespeed = 7.9 + (25.1 - 7.9) * randy.nextDouble();
double bikeonedistance = bikeonespeed * bikeoneminutes/60;
tofile.println("Biking" + " " + bikeoneminutes + " " + bikeonedistance);
}
else if (bikeroulette > 49) {
int biketwominutes = bikeminutesTwo;
double biketwospeed = 7.9 + (25.1 - 7.9) * randy.nextDouble();
double biketwodistance = biketwospeed * biketwominutes/60;
tofile.println("Biking" + " " + biketwominutes + " " + biketwodistance);
}
}
if (exercise == 2) {
int exercises = randy.nextInt(15) + 1;
int reps = randy.nextInt(37) + 9;
double liftminutes;
int liftminutes = 5*reps*exercises/60 + 2*(exercises-1);
tofile.println("Lifting" + " " + liftminutes + " " + reps);
}
if (exercise == 3) {
int danceminutes = randy.nextInt(90) + 29;
double bpm = 79.9 + (220 - 79.9) * randy.nextDouble();
tofile.println("Dancing" + " " + danceminutes + " " + bpm);
}
}
toFile.close(); //saving output file
} // end main
} // 结束 CreateFile 类