public class TennisBall
extends java.lang.Object
构造器和说明 |
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TennisBall(int ttl)
Creates a new ball with the specified TTL (Time To Live) value.
|
限定符和类型 | 方法和说明 |
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int |
getTTL() |
TennisBall |
stroke() |
java.lang.String |
toString() |
public TennisBall(int ttl)
ttl
- The time to livepublic int getTTL()
public TennisBall stroke()
TennisPlayer
's stroke.
The returned ball has decreased TTL value and switched PING/PONG state.public java.lang.String toString()
toString
在类中 java.lang.Object
[PING|PONG]
(TTL)
).