查找第二大值

public class SecondBig {

public static void main(String[] args) {
int a[] = {9,8,7,7,8,8};
int firstB = a[0];
int secondB = a[1];
for(int i = 1; i<a.length; i++){
if(a[i] > firstB){
secondB = firstB;
firstB = a[i];
}
else if((a[i] < firstB)&&(a[i] > secondB)){
secondB = a[i];
}
}
if(firstB == secondB){
System.out.println("no secondB");
}
else
System.out.println("SecondB is " + secondB);

}

}