Java错误缺少返回陈述

在方法

promComm

answer

false

randQuest.nextInt(1) != 0.

应该是这样的：

public String promComm( boolean answer ){    if (answer){        switch (randQuest.nextInt(1)){    case 0:    return("Very Good!");        }        switch (randQuest.nextInt(1) ){case 0:          return( "No. Please try again." );        }        return "Some value";    }else        return "Some value";  }