Dynamic Array of ints in j2me

问题:

I want to do a simple dynamic array of ints in my j2me application,

The only dynamic array I see is "java.util.Vector" and this one doesn't seem to accept an int as a new element (only wants Objects).

So how do I go around fixing that problem?

回答1:

public class DynamicIntArray {     private static final int CAPACITY_INCREMENT = 10;     private static final int INITIAL_CAPACITY   = 10;      private final int capacityIncrement;      public int   length = 0;     public int[] array;      public DynamicIntArray(int initialCapacity, int capacityIncrement)     {         this.capacityIncrement = capacityIncrement;         this.array = new int[initialCapacity];     }      public DynamicIntArray()     {         this(CAPACITY_INCREMENT, INITIAL_CAPACITY);     }      public int append(int i)     {         final int offset = length;         if (offset == array.length)         {             int[] old = array;             array = new int[offset + capacityIncrement];             System.arraycopy(old, 0, array, 0, offset);         }         array[length++] = i;         return offset;     }       public void removeElementAt(int offset)     {         if (offset >= length)         {             throw new ArrayIndexOutOfBoundsException("offset too big");         }          if (offset < length)         {             System.arraycopy(array, offset+1, array, offset, length-offset-1);             length--;         }     } } 

Doesn't have a setAt() method, but I'm sure you get the idea.

回答2:

You need to box the int in an Integer.

v.addElement(new Integer(1)); 

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