using a do while loop to search array

[JavaSado]

Hi

I have got an array to generate random numbers and am now trying to introduce a boolean expression so that when the numbers are being generating, if a number is found to be in the array already another number is generated.

I cannot compile the code below, as it says the for the } just after the while line "Syntx error, insert "while(Expression);" to complete DoStatement"

Can anyone point me in the right direction with what I have done wrong?
Does my code look like it will do what i want it to?

Any help greatly appreciated - thank you

My code is:

public class BinaryTreeAction 
   {
	 public TreeNode tn;  // graphical representation of the node
	 public TreeNode torch; // torch pointer to node
	 public int NodeSize = 25;
	 int amount = 6;   // number of integers needed to generate
	 int[] nums = new int[amount]; 
	 int i;
	 
     // method for searching the array for duplicate numbers

   boolean fresh (int [] nums, int val){
      for (int i = 0; i < amount; i++){
         if (nums[i] == val) return true;
         }
      {
      return false;
      }
 }// end fresh method
	 
	 
 //method to generate random numbers to insert into the tree
   public void randomNumber(){
      for (int i=0; i<amount; i++){  
         do{
             nums[i] = (int) Math.floor(Math.random() * 100); 
        // generate numbers between 0 and 99

            nums[i] = nums[i] -50; 
       // minus 50 from the random number generated so that some of the final numbers are negative.
            
       for (int i = 0; i<nums.length; i++){
          System.out.println("random is " + nums[i]);
       } 
      
       while (not(fresh(nums,i)));	    
       }
}// end of randomNumber method