How to round *down* integers in Java?

Question

I\'d like to round integers down to their nearest 1000 in Java.

So for example:

• 13,623 rounds to 13,000
• 18,999 rounds to 18,000
• etc

Answer 1

Simply divide by 1000 to lose the digits that are not interesting to you, and multiply by 1000:

i = i/1000 * 1000

Or, you can also try:

i = i - (i % 1000)