Commons Lang、BooleanUtils.toStringOnOff()
import org.apache.commons.lang.BooleanUtils; public class C2009032900 { public static void main(String[] args) { System.out.println(BooleanUtils.toStringOnOff(true)); System.out.println(BooleanUtils.toStringOnOff(false)); System.out.println(BooleanUtils.toStringOnOff(new Boolean(true))); System.out.println(BooleanUtils.toStringOnOff(new Boolean(false))); } }
で、
on off on off