# 基本步骤
## 键盘录入数据的步骤
A:导包(位置放到class定义的上面)
> import java.util.Scanner;
B:创建对象
> Scanner sc = new Scanner(System.in);
C:接收数据
> int x = sc.nextInt();
例：判断出三个数中最大的数
```
package com.igeek.day01;
import java.util.Scanner;
public class Test6 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
System.out.println("请输入数字a:");
int a =sc.nextInt();
System.out.println("请输入数字b:");
int b =sc.nextInt();
System.out.println("请输入数字c:");
int c =sc.nextInt();
int max = (a>b)?a:b;
int result = (max>c)?max:c;
System.out.println(result);
}
}
```
