Java 如何修复?变量可能尚未初始化
我得到一个错误: 返回租赁月;变量可能尚未初始化 我怎样才能修好它Java 如何修复?变量可能尚未初始化,java,initialization,Java,Initialization,我得到一个错误: 返回租赁月;变量可能尚未初始化 我怎样才能修好它 public class Rainfall { double [] rainfallNumber; public double getTotalRainfall() { double totalRainfall = 0; for (int index = 0; index < rainfallNumber.length; index++) { totalRainfall
public class Rainfall
{
double [] rainfallNumber;
public double getTotalRainfall() {
double totalRainfall = 0;
for (int index = 0; index < rainfallNumber.length; index++) {
totalRainfall = totalRainfall+rainfallNumber[index];
}
return totalRainfall;
}
public double getAverageRainfall() {
return getTotalRainfall() / rainfallNumber.length;
}
public int getMoreRainfallMonth() {
double moreRain = rainfallNumber[0];
int moreRainMonth = 1;
for (int index = 0; index < rainfallNumber.length; index++) {
if(rainfallNumber[index] > moreRain) {
moreRain = rainfallNumber[index];
moreRainMonth = index + 1;
}
}
return moreRainMonth;
}
public int getLeastRainfallMonth() {
double leastRain = rainfallNumber[0];
int leastRainMonth;
for (int index = 0; index < rainfallNumber.length; index++) {
if(rainfallNumber[index] < leastRain) {
leastRain = rainfallNumber[index];
leastRainMonth = index + 1;
}
}
return ***leastRainMonth***;
}
public Rainfall (double [] rainfallNumberGiven) {
rainfallNumber = new double[rainfallNumberGiven.length];
for (int index = 0; index < rainfallNumberGiven.length; index++) {
rainfallNumber[index] = rainfallNumberGiven[index];
}
}
}
公共类降雨
{
双倍数字;
公共双getTotalRainfall(){
两倍总降雨量=0;
对于(int index=0;indexmoreRain){
moreRain=rainfallNumber[索引];
moreRainMonth=指数+1;
}
}
每月返回一次;
}
public int getLeastRainfallMonth(){
double LeastTrain=rainfallNumber[0];
每月一次;
对于(int index=0;index
您必须在声明中初始化leastTrainMonth变量,就像在moreRainMonth中一样。任何时候在循环外声明的循环中初始化变量,都有数组大小(或迭代次数)为零的风险,因此跳过初始化。您可以:
leastRainMonth
getLeastRainfallMonth()
的返回类型更改为Integer
并初始化Integer leastRainMonth=null代码>(麻烦)李>
在这种情况下,您可能应该执行第一个选项并初始化int leastRainMonth=1代码>格式化代码,将错误移到顶部,添加了标记