/**
* 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.
*/
public static Object resizeArray(Object oldArray, int newSize) {
int oldSize = java.lang.reflect.Array.getLength(oldArray);
@SuppressWarnings("rawtypes")
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;
}
// from
// http://stackoverflow.com/questions/5606338/cast-primitive-type-array-into-object-array-in-java
private static Object[] toObjectArray(Object val) {
if (val instanceof Object[]) return (Object[]) val;
int arrayLength = java.lang.reflect.Array.getLength(val);
Object[] outputArray = new Object[arrayLength];
for (int i = 0; i < arrayLength; ++i) {
outputArray[i] = java.lang.reflect.Array.get(val, i);
}
return outputArray;
}
// math behide resizeArray.
private Object resizeArray(Object oldArray, int newSize) {
// This class was taken directly from "http://www.source-code.biz/snippets/java/3.htm"
// You try to dynamically resizing an array, than come talk to me about coping code.
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;
}
