title: How to check if array indexes are empty and if so check the next?
body: <p>Anybody got any idea on how I can check if an array indexes(not just one index) are empty and if is empty or zero put a value there. And also if all the indexes are all not empty print an error. </p>
  
  <p>Sorry unfortunately I can't give rep. </p>
  
  <pre><code>import java.util.Scanner; 
  
  public class Myhash {
  
  /**
   * @param args
   */
  public static void main(String[] args) {
      // TODO Auto-generated method stub
  
      int [] myData = new int[17]; 
  
      int [] newData = new int [17];
  
      System.out.println("Please enter 16 integer numbers");
      for(int i= 0; i&lt;myData.length; i++){
          //System.out.print("Please enter 16 numbers");
          Scanner input = new Scanner(System.in);
          int data =input.nextInt(); 
          myData[i]=data; 
          int num3 = data % 17;
          newData[num3]=data; 
      }       
  
      System.out.println("These are the numbers you entered\n");      
      System.out.printf("%s%8s \n", "Index", "Value"); 
  
      for(int t=0; t&lt;myData.length; t++){
          System.out.printf("%5d%8d\n", t, myData[t]);
      }
  
      System.out.println("\n");
      System.out.println("The Hash Function:\n\n");
      System.out.printf("%5s%8s \n", "Index", "Value"); 
  
              for(int s=0; s&lt;newData.length; s++){
          System.out.printf("%5d%8d\n", s, newData[s]);
              }   
      }
  }
  </code></pre>
  
  <p>on here:</p>
  
  <pre><code>    for(int s=0; s&lt;newData.length; s++){
      System.out.printf("%5d%8d\n", s, newData[s]);
      }
  </code></pre>
  
  <p>how do check for more than one index(if empty?
  If the index is empty how do check for the next index and if that one is not empty how do i check the next one, etc?</p>