java 代码
-
- import java.util.*;
-
- interface TimeStamped { long getStamp(); }
-
- class TimeStampedImp implements TimeStamped {
- private final long timeStamp;
- public TimeStampedImp() {
- timeStamp = new Date().getTime();
- }
- public long getStamp() { return timeStamp; }
- }
-
- interface SerialNumbered { long getSerialNumber(); }
-
- class SerialNumberedImp implements SerialNumbered {
- private static long counter = 1;
- private final long serialNumber = counter++;
- public long getSerialNumber() { return serialNumber; }
- }
-
- interface Basic {
- public void set(String val);
- public String get();
- }
-
- class BasicImp implements Basic {
- private String value;
- public void set(String val) { value = val; }
- public String get() { return value; }
- }
-
- class Mixin extends BasicImp
- implements TimeStamped, SerialNumbered {
- private TimeStamped timeStamp = new TimeStampedImp();
- private SerialNumbered serialNumber =
- new SerialNumberedImp();
- public long getStamp() { return timeStamp.getStamp(); }
- public long getSerialNumber() {
- return serialNumber.getSerialNumber();
- }
- }
-
- public class Mixins {
- public static void main(String[] args) {
- Mixin mixin1 = new Mixin(), mixin2 = new Mixin();
- mixin1.set("test string 1");
- mixin2.set("test string 2");
- System.out.println(mixin1.get() + " " +
- mixin1.getStamp() + " " + mixin1.getSerialNumber());
- System.out.println(mixin2.get() + " " +
- mixin2.getStamp() + " " + mixin2.getSerialNumber());
- }
- }
-
-
- //:~
声明：ITeye文章版权属于作者，受法律保护。没有作者书面许可不得转载。
|
