View Compilation Error

0_0_16643815_22791\Main.java:2: 错误: 需要class, interface或enum
public static void main(String args[]){
              ^
0_0_16643815_22791\Main.java:4: 错误: 需要class, interface或enum
 while(sc.hasNext()){
 ^
0_0_16643815_22791\Main.java:6: 错误: 需要class, interface或enum
 double y1 = sc.nextDouble();
 ^
0_0_16643815_22791\Main.java:7: 错误: 需要class, interface或enum
 double x2 = sc.nextDouble();
 ^
0_0_16643815_22791\Main.java:8: 错误: 需要class, interface或enum
 double y2 = sc.nextDouble();
 ^
0_0_16643815_22791\Main.java:9: 错误: 需要class, interface或enum
 double s =(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
 ^
0_0_16643815_22791\Main.java:10: 错误: 需要class, interface或enum
 s=Math.sqrt(s);
 ^
0_0_16643815_22791\Main.java:11: 错误: 需要class, interface或enum
 System.out.printf("%.2f",s);
 ^
0_0_16643815_22791\Main.java:12: 错误: 需要class, interface或enum
 System.out.println();
 ^
0_0_16643815_22791\Main.java:13: 错误: 需要class, interface或enum
 }
 ^
10 个错误