Using arrays in JAVA

Question

Hi Guys,
I always had a few problems using arrays and now I need to use them and I am stuck.
on my program i need to create an array of int with the numbers 1 to 1000 in it for this I have done:
int[ ] array;
on the class constructor
array = new int[1000];
to fill the array:
for (int i = 0; i < array.length; i++)
     array[i] = i;
The problem is that I always get an ArrayIndexOutOfBoundsException error.
I know how to solve it which is to create an array with 1001 elements but is there a more elegant way of creating the array or this is the way to do it?
To put my question in another way if any of you Guys was creating this program which way would you do it.
Best regards
          Luis

Answer 1

Sloppy of me. This is a bit better:
package cruft;
import java.util.Arrays;
* A class for a one-based array of ints.
public class OneBasedIntArray
   private int [] values;
   public static void main(String[] args)
      int [] values = new int[args.length];
      for (int i = 0; i < args.length; i++)
         values[i] = Integer.parseInt(args);
OneBasedIntArray intArray = new OneBasedIntArray(values);
System.out.println(intArray);
public OneBasedIntArray(int[] values)
this.values = new int[values.length];
System.arraycopy(values, 0, this.values, 0, values.length);
public int getValue(int index)
if (index <= 0)
throw new IllegalArgumentException("this array is one-based");
return values[index-1];
public void setValue(int index, int value)
if (index <= 0)
throw new IllegalArgumentException("this array is one-based");
this.values[index-1] = value;
public boolean equals(Object o)
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
OneBasedIntArray intArray = (OneBasedIntArray) o;
if (!Arrays.equals(values, intArray.values))
return false;
return true;
public int hashCode()
return (values != null ? Arrays.hashCode(values) : 0);
public String toString()
StringBuilder builder = new StringBuilder();
builder.append("OneBasedIntArray{");
for (int i = 0; i < values.length; i++)
builder.append("(").append(i+1).append(",").append(values[i]).append(")");
builder.append('}');
return builder.toString();