Java implements a redefinition array similar to VB's ReDim

Code farm:
// Param objArr the expanded object of Array.
// Param newLength the length of the new Array
Public static Object getNewArr (Object objArr, int newLength ){
If (! ObjArr. getClass (). isArray () {// determine the type
Return null;
}
// Get the array's componentType
Class componentType = objArr. getClass (). getComponentType (); // obtain the type
// Get a newInstance of a Array object
Object newArray = Array. newInstance (componentType, newLength); // create an Array Object
// Copy the array
System. arraycopy (objArr, 0, newArray, 0, Array. getLength (objArr); // copy the original array data to the new array, where newLength must be greater than the length of the meta-objArr; otherwise, an error is returned.
Return newArray;
}
Share: