相关疑难解决方法(0)

georgii@gleontiev:~$ scala
Welcome to Scala version 2.8.1.final (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_24).
Type in expressions to have them evaluated.
Type :help for more information.

scala> val jbool = java.lang.Boolean.TRUE    
jbool: java.lang.Boolean = true

scala> val sbool = true         
sbool: Boolean = true

scala> def sboolMethod(sbool: Boolean) = print("got scala.Boolean " + sbool)              
sboolMethod: (sbool: Boolean)Unit

scala> sboolMethod(sbool)
got scala.Boolean true

scala> sboolMethod(jbool)
<console>:9: error: type mismatch;
 found   : java.lang.Boolean
 required: scala.Boolean
       sboolMethod(jbool)
                   ^

scala> implicit def jbool2sbool(bool: java.lang.Boolean): …