TIOBE - Java Coding Standard

Rule: Basic30

Synopsis:	Do not start a literal by 0 unless it's an octal value
Language:	Java
Severity Level:	2
Category:	Basic

Description:

Integer literals should not start with zero. Zero means that the rest of literal will be interpreted as an octal value.

public class Foo {
  int i = 012; // set i with 10 not 12
  int j = 010; // set j with 8 not 10
  k = i * j; // set k with 80 not 120
}