What operation can perform this action?

Question

Java

There are two values ​​in binary:

------------------------------101111111001001010111010011 (int)
100010000000000000000000100000101111111001001010111010011 (long)

Which operation can get the second value from the first?
PS The first value can be obtained by converting long -> int
. I managed to do this:

String value = "101111111001001010111010011";
String result = Long.toString(0x1100001L << 32 | Integer.parseInt(value, 2), 2);

It works, but is it correct?

Answer 1

In the first value, there is obviously less information than in the second => no way.
UPD:
ideone.com/dNCxZU

long low = 0b101111111001001010111010011L;
long high = 0b100010000000000000000000100000L;
int moveSize = Long.toBinaryString(low).length();

long result = low + (high << moveSize);