View Compilation Error

0_0_16925774_4215\Main.java:11: 错误: 需要'['
	    	double sum = new double("0");
	    	                       ^
0_0_16925774_4215\Main.java:11: 错误: 需要']'
	    	double sum = new double("0");
	    	                            ^
0_0_16925774_4215\Main.java:12: 错误: 需要'['
	    	double a = new double("0");
	    	                     ^
0_0_16925774_4215\Main.java:12: 错误: 需要']'
	    	double a = new double("0");
	    	                          ^
0_0_16925774_4215\Main.java:14: 错误: 需要<标识符>
	    	a = cin.double();
	    	        ^
0_0_16925774_4215\Main.java:14: 错误: 需要->
	    	a = cin.double();
	    	                ^
0_0_16925774_4215\Main.java:17: 错误: 需要'['
	    double aa =sum.divide(new double("12.0")).doubleValue();
	                                    ^
0_0_16925774_4215\Main.java:17: 错误: 需要']'
	    double aa =sum.divide(new double("12.0")).doubleValue();
	                                            ^
8 个错误