字符打印流

public class pw {
    public static void main(String[] args) throws IOException {
/*        PrintWriter printWriter = new PrintWriter("code\\pw.txt");//不自动刷新
        printWriter.write("hello");
        printWriter.flush();
        printWriter.close();

        printWriter.println("zzzzzz");//自动换行
        printWriter.println("zzzzzz");*/

        PrintWriter printWriter = new PrintWriter(new FileWriter("code\\pw.txt"),true);//自动刷新
printWriter.println("ffffff");
        printWriter.println("zdghdzfh");
    }
}

输出：