java algorithm

package com.codeniro.algorithms;

/**
 *
 * @author Frank Akogun
 */
public class Algo {
    
   private final int[] arrayList = new int[20];
   private final int arraySize = 10;
   
   
   public void arrayGenerator(){
        for (int i =0; i<arraySize; i++){
            //generate random numbers between 10 and 19
            arrayList[i]= (int) (Math.random()*10)+10;
        }
    }
   
   public void printArray(){
        System.out.println("----------");
        for (int i=0; i<arraySize; i++){
           System.out.print("| " + i +" | "); 
           System.out.println(arrayList[i] + " |"); 
           System.out.println("----------");
        }
    }
   
   public int getValueByIndex(int index){
        if(index < arraySize){
            return arrayList[index];       
        }  
        return 0;
        
    }
  
  
    public static void main(String[] args) {
        Algo con = new Algo();
        con.arrayGenerator();
        con.printArray();
        int index = 0;
        int result = con.getValueByIndex(index);
        System.out.println("Value at index "+ index + ": " + result); 
    }   
}