Copy contents of an int array to a double array in Java?

Question

I\'m trying to copy the contents of my int array into an array of type double. Do I have to cast them first?

I successfully copied an array of type int to another a

Answer 1

From System.arraycopy JavaDoc

[...] Otherwise, if any of the following is true, an ArrayStoreException is thrown and the destination is not modified:

*...

*...

*The src argument and dest argument refer to arrays whose component types are different primitive types. [...]

Since int and double are different primitive types you will have to manually iterate through one array and copy its content to another one.