javalangInteger cannot be cast to LjavalangObject;

This error occurs when you try to cast an object of type Integer to an array of objects (Object[]).

For example:

Integer i = 10;
Object[] arr = (Object[]) i;

To fix this error, you need to create a new array and add the Integer object to it:

Integer i = 10;
Object[] arr = new Object[1];
arr[0] = i;