Java Pad地址到64位

Question

I'm currently dealing with some memory addresses that I need to pad to a full 64-bit in length. As an example:

0x7ffe0 - needs to be padded to: 0x000000007ffe0000

Essentially each value needs to be padding out to 16 digits with the zeros in the right places.

I know String.format will probably do it, but I'm not sure if DecimalFormat is quicker, or the better way to do this.

Any advice would be greatly appreciated.

Thanks

UPDATE

This is how the memory information is stored within the file:

Essentially the first 8 bytes are the start of a range, and the last 8 are where the range ends.

Another program I have access to is showing me the full 64-bit padded address, so I'm not entirely sure how it is performing the padding.

Answer 1

try this

String s = String.format("0x%016x", 0x7ffe0);

DecimalFormat works only with decimals not hexadecimals

Answer 2

试试这样的事情

    System.out.printf("0x%016x", 0x7ffe0);