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  1. import java.util.Scanner; // 导入 Scanner 类
  2.  
  3. class Main {
  4.   public static void main(String[] args) {
  5.     Scanner myObj = new Scanner(System.in);
  6.     String userName;
  7.  
  8.     // 输入用户名并按下回车
  9.     System.out.println("请输入用户名"); 
  10.     userName = myObj.nextLine();   
  11.  
  12.     System.out.println("用户名为: " + userName);        
  13.   }
  14. }
Success #stdin #stdout 0.18s 58804KB
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Trappist-1c
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请输入用户名
用户名为: Trappist-1c
https://ideone.com/FOpoA3
language:
Java (12.0.1)
created:
1 day ago
visibility:
public

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