The 4th Chapter Java receives user input

The 4th Chapter Java receives user input 1. Input

Use the Scanner tool class to exchange data entered by the user
The scanner class is located in the Java.util package and needs to be imported when using the package
Steps to use:

1. Import the Java.util.Scanner class

例：import java.util.Scanner

2. Create a Scanner object

例：Scanner input=new Scanner(System.in);

3. Receive and save user input values

例：int score=input.nextInt();input之后可以选择很多方法，注意使用一般是先提示后输入

A few common differences between print and println and printf.

Print no newline output
println line break output
printf with%s (formatted) output

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The 4th Chapter Java receives user input