/**

* Reallocates an array with a new size, and copies the contents

* of the old array to the new array.

* @param oldArray the old array, to be reallocated.

* @param newSize the new array size.

* @return A new array with the same contents.

*/

private static Object resizeArray (Object oldArray, int newSize) {

int oldSize = java.lang.reflect.Array.getLength(oldArray);

Class elementType = oldArray.getClass().getComponentType();

Object newArray = java.lang.reflect.Array.newInstance(elementType,newSize\);

int preserveLength = Math.min(oldSize,newSize);

if (preserveLength > 0)

System.arraycopy \(oldArray,0,newArray,0,preserveLength\);

return newArray;

}

// Test routine for resizeArray().

public static void main (String[] args) {

int[] a = {1,2,3};

a = (int[])resizeArray(a,5);

a[3] = 4;

a[4] = 5;

for (int i=0; i<a.length; i++)

System.out.println \(a\[i\]\);

}