Scanner input =new Scanner(System.in)这句代码中的input为什么在同一个java源代码文本里面只能用一次?我的意思是如果下面继续需要输入的话,用Scanner input =new Scanner(System.in)就会显示错误.比如:
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![Scanner input =new Scanner(System.in)这句代码中的input为什么在同一个java源代码文本里面只能用一次?我的意思是如果下面继续需要输入的话,用Scanner input =new Scanner(System.in)就会显示错误.比如:](/uploads/image/z/12113640-0-0.jpg?t=Scanner+input+%3Dnew+Scanner%28System.in%29%E8%BF%99%E5%8F%A5%E4%BB%A3%E7%A0%81%E4%B8%AD%E7%9A%84input%E4%B8%BA%E4%BB%80%E4%B9%88%E5%9C%A8%E5%90%8C%E4%B8%80%E4%B8%AAjava%E6%BA%90%E4%BB%A3%E7%A0%81%E6%96%87%E6%9C%AC%E9%87%8C%E9%9D%A2%E5%8F%AA%E8%83%BD%E7%94%A8%E4%B8%80%E6%AC%A1%3F%E6%88%91%E7%9A%84%E6%84%8F%E6%80%9D%E6%98%AF%E5%A6%82%E6%9E%9C%E4%B8%8B%E9%9D%A2%E7%BB%A7%E7%BB%AD%E9%9C%80%E8%A6%81%E8%BE%93%E5%85%A5%E7%9A%84%E8%AF%9D%2C%E7%94%A8Scanner+input+%3Dnew+Scanner%28System.in%29%E5%B0%B1%E4%BC%9A%E6%98%BE%E7%A4%BA%E9%94%99%E8%AF%AF.%E6%AF%94%E5%A6%82%EF%BC%9A)
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