Mega Code Archive
Demonstrate ordinal(), compareTo(), and equals()
<![CDATA[
enum Apple {
A, B, C, D, E
}
class EnumDemo4 {
public static void main(String args[]) {
Apple ap, ap2, ap3;
for (Apple a : Apple.values())
System.out.println(a + " " + a.ordinal());
ap = Apple.C;
ap2 = Apple.B;
ap3 = Apple.C;
System.out.println();
if (ap.compareTo(ap2) < 0)
System.out.println(ap + " comes before " + ap2);
if (ap.compareTo(ap2) > 0)
System.out.println(ap2 + " comes before " + ap);
if (ap.compareTo(ap3) == 0)
System.out.println(ap + " equals " + ap3);
System.out.println();
if (ap.equals(ap2))
System.out.println("Error!");
if (ap.equals(ap3))
System.out.println(ap + " equals " + ap3);
if (ap == ap3)
System.out.println(ap + " == " + ap3);
}
}
]]>