错误：找不到符号;符号：变量keyBoard

Question

我有这个代码并试图编译它。但它给了我

  

错误：找不到符号

     

anotherEntry = keyBoard.nextInt（）;

     

symbol：variable keyBoard

     

location：class DemoVariables3

有什么线索？

代码：

import java.util.Scanner;

public class DemoVariables3
{
 public static void main(String[] args)
  {
     int entry;
     int anotherEntry;
     System.out.print("Enter another integer ");
     anotherEntry = keyBoard.nextInt();
     System.out.print("The other entry is ");
     System.out.println(anotherEntry);
     System.out.println(entry + "plus" +
    anotherEntry + "is" + (entry + anotherEntry));
  }
}

Answer 1

在尝试使用变量keyBoard之前，您需要创建一个名为Scanner的变量并将其分配给新的keyBoard对象：

Scanner keyBoard = new Scanner(System.in);