String?st?=?"abcdefghijklmnopqrstuvwxyzABCDEF"				+?"GHIJKLMNOPORSTUVWXYZ1234567890";				List<String>?test?=?new?ArrayList<String>();	????for(int?n=0;n<10;n++)?{	????		???Random?ran?=?new?Random();	???????int?s=ran.nextInt(9)+1;	???????StringBuilder?test1?=?new?StringBuilder();		???for(int?i=0;i<s;i++)?{			????Random?random?=?new?Random();			??do?{			????int?num?=?random.nextInt(st.length());				test1.append(st.charAt(num));		}while(test.contains(test1.toString()));					???}		???test.add(test1.toString());		System.out.println("將要添加字符："+test1.toString());