View Compilation Error

0_0_26912105_8725\Main.java:1: 错误: 需要class, interface或enum
        public static void main(String[] args) {
                      ^
0_0_26912105_8725\Main.java:4: 错误: 需要class, interface或enum
		String str;
		^
0_0_26912105_8725\Main.java:5: 错误: 需要class, interface或enum
		char a[] = new char [10];
		^
0_0_26912105_8725\Main.java:7: 错误: 需要class, interface或enum
		while(sc.hasNext()){
		^
0_0_26912105_8725\Main.java:9: 错误: 需要class, interface或enum
			a=str.toCharArray();
			^
0_0_26912105_8725\Main.java:10: 错误: 需要class, interface或enum
			Arrays.sort(a);
			^
0_0_26912105_8725\Main.java:11: 错误: 需要class, interface或enum
			System.out.println(a[0]+" "+a[1]+" "+a[3]);
			^
0_0_26912105_8725\Main.java:12: 错误: 需要class, interface或enum
		}
		^
0_0_26912105_8725\Main.java:14: 错误: 需要class, interface或enum
	}
	^
9 个错误