View Compilation Error

0_0_37013568_11439\Main.java:3: 错误: 需要class, interface或enum
public Main {
       ^
0_0_37013568_11439\Main.java:4: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_37013568_11439\Main.java:6: 错误: 需要class, interface或enum
	while (scanner.hasNext()) {
	^
0_0_37013568_11439\Main.java:11: 错误: 需要class, interface或enum
		double x2=scanner.nextDouble();
		^
0_0_37013568_11439\Main.java:12: 错误: 需要class, interface或enum
		double y1=scanner.nextDouble();
		^
0_0_37013568_11439\Main.java:13: 错误: 需要class, interface或enum
		double y2=scanner.nextDouble();
		^
0_0_37013568_11439\Main.java:15: 错误: 需要class, interface或enum
		double l=Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
		^
0_0_37013568_11439\Main.java:17: 错误: 需要class, interface或enum
		System.out.printf("%.2f",l);
		^
0_0_37013568_11439\Main.java:18: 错误: 需要class, interface或enum
		System.out.println();
		^
0_0_37013568_11439\Main.java:19: 错误: 需要class, interface或enum
	}
	^
10 个错误