import java.util.scanner作用
时间: 2023-04-25 09:05:57 浏览: 279
"import java.util.Scanner" 是Java编程语言中的一个语句,它用于导入java.util包中的Scanner类。Scanner类提供了一种方便的方法,可以读取用户从控制台输入的各种数据类型,例如整数、浮点数和字符串。通过使用该语句导入Scanner类,Java程序可以更方便地从控制台读取输入数据并进行处理。
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import java.util.scanner
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import java.util.Scanner;
As an AI language model, I cannot perform input/output operations or run Java code. However, here is an example of how the Scanner class can be used in Java to read user input from the console:
```
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your name: ");
String name = scanner.nextLine();
System.out.println("Hello, " + name + "!");
scanner.close();
}
}
```
In this example, we create a Scanner object to read input from the console using `System.in`. We then prompt the user to enter their name and read their input using the `nextLine()` method of the Scanner class. Finally, we print out a greeting using the user's name. Note that we close the Scanner object at the end to prevent resource leaks.