View Compilation Error

0_0_18647562_30581\Main.java:4: 错误: 需要')'
		Scanner kb=new Scanner(System in.);
		                             ^
0_0_18647562_30581\Main.java:4: 错误: 非法的表达式开始
		Scanner kb=new Scanner(System in.);
		                                ^
0_0_18647562_30581\Main.java:4: 错误: 需要';'
		Scanner kb=new Scanner(System in.);
		                                 ^
3 个错误