i have question about hoare partition method here is code and also pseudo code please if something is wrong correct
pseudo code

HOARE-PARTITION ( A, p, r)
 1 x ? A[ p]
 2 i ? p-1
 3 j ? r +1
 4 while TRUE
 5        do repeat j ? j - 1
 6        until A[ j ] = x

 7        do repeat i ? i + 1
 8        until A[i] = x

 9        if i < j
10             then exchange A[i] ? A[ j ]
11             else return j

and my code

public class Hoare {
public static  int partition(int a[],int p,int r) {
    int x=a[p];
    int  i=p-1;
    int  j=r+1;

    while (true) {    
        do
        {
            j=j-1;
        }  while(a[j]>=x);

        do
        {
            i=i+1;
        } while(a[i]<=x);

        if (i<j) {
            int t=a[i];
            a[i]=a[j];
            a[j]=t;
        } else {    
            return j;
        }
    }        
}

public static void main(String[]args){
    int a[]=new int[]{13,19,9,5,12,8,7,4,11,2,6,21};
    partition(a,0,a.length-1);
}
}

and mistake is this error: Class names, 'Hoare', are only accepted if annotation processing is explicitly requested 1 error any ideas