View Compilation Error

0_0_15377271_21390\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_15377271_21390\Main.java:3: 错误: 需要class, interface或enum
	while(s.hasNext()){
	^
0_0_15377271_21390\Main.java:5: 错误: 需要class, interface或enum
	x1 = s.nextDouble();
	^
0_0_15377271_21390\Main.java:6: 错误: 需要class, interface或enum
	x2 = s.nextDouble();
	^
0_0_15377271_21390\Main.java:7: 错误: 需要class, interface或enum
	y1 = s.nextDouble();
	^
0_0_15377271_21390\Main.java:8: 错误: 需要class, interface或enum
	y2 = s.nextDouble();
	^
0_0_15377271_21390\Main.java:9: 错误: 需要class, interface或enum
	double s1 = Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
	^
0_0_15377271_21390\Main.java:10: 错误: 需要class, interface或enum
	System.out.printf("%.2f\r\n",s1);
	^
0_0_15377271_21390\Main.java:11: 错误: 需要class, interface或enum
	}
	^
0_0_15377271_21390\Main.java:14: 错误: 需要class, interface或enum
  }
  ^
10 个错误