long literal

To specify a long literal, you can append an upper-or lowercase L to the literal. For example, 0x7ffffffffffffffL or 987654321234567899876L.

public class Main {
  public static void main(String args[]) {
    long l = 0x7ffffffffffffffL;

    System.out.println("l is " + l);
  }
}

The output generated by this program is shown here:

l is 576460752303423487