View Compilation Error

0_0_26924894_29426\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_26924894_29426\Main.java:4: 错误: 需要class, interface或enum
		    while(x.hasNext());{
		    ^
0_0_26924894_29426\Main.java:4: 错误: 需要class, interface或enum
		    while(x.hasNext());{
		                       ^
0_0_26924894_29426\Main.java:6: 错误: 需要class, interface或enum
				double y1 =x.nextDouble();
				^
0_0_26924894_29426\Main.java:7: 错误: 需要class, interface或enum
				double x2 =x.nextDouble();
				^
0_0_26924894_29426\Main.java:8: 错误: 需要class, interface或enum
				double y2 =x.nextDouble();
				^
0_0_26924894_29426\Main.java:9: 错误: 需要class, interface或enum
				double z = Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
				^
0_0_26924894_29426\Main.java:10: 错误: 需要class, interface或enum
				DecimalFormat df = new DecimalFormat("#.00");
				^
0_0_26924894_29426\Main.java:11: 错误: 需要class, interface或enum
				System.out.println(df.format(z));
				^
0_0_26924894_29426\Main.java:12: 错误: 需要class, interface或enum
		}
		^
10 个错误