Integer literals are assumed to be of type int unless the letter L or l is appended. : Integer « Java Source And Data Type « SCJP

1. SCJP
2. Java Source And Data Type
3. Integer

public class MainClass {
  public static void main(String[] argv) {
    int i = 0;
    long l = 0L;
    System.out.println();
  }
}