Question

java bufferwriter为什么不能输入到文件中

File writefile=new File("d:\\","3.txt");
try{

boolean b =writefile.createNewFile();

}catch(Exception e){

e.printStackTrace();

}
FileWriter outputfile=new FileWriter(writefile);

BufferedWriter output = new BufferedWriter(outputfile);

String a="woshidafnadnfadj";

output.write(a,0,a.length());

Answer 1

输出内容到文件最好用打印流PrintWriter/PrintStream
你那种方法不行
把BufferedWriter改成下面的方法就行了
PrintWriter bfWriter=new PrintWriter(writer);
bfWriter.println(s);
你关流的时候只用关最外层的BufferedWriter和BufferedReader就OK了,里面的字符流,字节流都一并给关掉了!