取出List中的数据加到StringBuffer中去

1、取出List<String>中的部分参数拼接到StringBuffer中

public void teachInfo(){
		List<String> list = new ArrayList<>();
		("小学六年级年级placeId六年级（一）班Y语文@f9d883c80d7440d28d8d4c896a46a86a@a1a79888e5444565838c3ef57cc413b9@8152aba24b8f4f65b2165d999a3ed84d@13a49f51bdbc4c4aa811938cc1125d3e@Y@6a3387092fad4540b05114e2a45dc80b");
		("小学四年级年级placeId四年级（二）班N数学@f9d883c80d7440d28d8d4c896a46a86a@72e9d1040e1245a689454eb1de1d2af4@c10a9dc4bbdd4d19826d81bb570c8446@b053440406ef48b4a1089c64f073c193@N@382c748435cf4600a3871f9b4bab84cf");
		("小学四年级年级placeId四年级（十五）班N化学@f9d883c80d7440d28d8d4c896a46a86a@72e9d1040e1245a689454eb1de1d2af4@c10a9dc4bbdd4d19826d81bb570c8446@7e751c132b1c4af5bf464c1a8e4804a2@N@f1d44be35d19494ea2b6b2cc84721964");
		
		StringBuffer xx = new StringBuffer() ;
		for(int i = 0;i < ();i++){
			String s1 = (String) (i);
			String[] array = ("@"); 
			 (array[2] +  "@" + array[4] + "@" + array[6] + ",");
		}
	}