View Compilation Error

0_0_26922852_16600\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_26922852_16600\Main.java:4: 错误: 需要class, interface或enum
		String str;
		^
0_0_26922852_16600\Main.java:5: 错误: 需要class, interface或enum
		char a[]=new char[10];
		^
0_0_26922852_16600\Main.java:6: 错误: 需要class, interface或enum
		while(sc.hasNext()){
		^
0_0_26922852_16600\Main.java:8: 错误: 需要class, interface或enum
		a=str.toCharArray();
		^
0_0_26922852_16600\Main.java:9: 错误: 需要class, interface或enum
		Arrays.sort(a);
		^
0_0_26922852_16600\Main.java:10: 错误: 需要class, interface或enum
		System.out.println(a[0]+" "+a[1]+" "+a[2]);
		^
0_0_26922852_16600\Main.java:11: 错误: 需要class, interface或enum
		}
		^
0_0_26922852_16600\Main.java:13: 错误: 需要class, interface或enum
	}
	^
9 个错误