if(ages[i] > ages[i+1])这句话在编译器中没有报错，运行时就显示异常。求解！！！

Question

public int getMaxAge() {
     int[] ages = {18,23,21,19,25 ,29 ,17};
     int max = 0;
     for(int i = 0;i < ages.length;i++)
     if(ages[i] > ages[i+1]){
        max = ages[i];
     }else{
         max = ages[i+1];
     }
     return max;

Answer 1

下标越界异常当i=length-1;i+1=length;