我製作了一個程序來反轉輸入的字符,並且每次運行它時都有一條錯誤消息。我的錯誤是什麼,這個錯誤信息是什麼意思?!這個程序有什麼問題?可變字符可能未被初始化
import java.util.*;
/* it's a program reverses entered characters */
class rev
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner sc=new Scanner(System.in);
int i=1,n=0;
char[] character;
while (i!=100) {
character[i]=sc.next().charAt(0);
n++;
if (character[i]=='\n') {
break;}
i++;
}
for (i=n;i>=1;i--){
System.out.print(character[i]);
}
}
}
error: variable character might not have been initialized
character[i]=sc.next().charAt(0);
^ error: variable character might not have been initialized System.out.print(character[i]);
首先,不要試圖* *運行的代碼,直到它的編譯。接下來,錯誤消息告訴你*確切地說*錯誤是什麼。你認爲你在初始化'character'變量的地方? –
可能重複[Java:Error:變量可能未被初始化](https://stackoverflow.com/questions/24152351/java-error-variable-might-not-have-been-initialized) –