摘要：
1.字符串有整型的相互转换String a = String.valueOf(2);//integer to numeric string Int i = Integer.parseInt(a);//numeric string to an int2.向文件末尾添加内容BufferedWriter out = null; try{ out = new BufferedWriter(new FileWriter(”filename”,true)); Out.write(”aString”); }catch(IOExcepti... 阅读全文
