java使用 DataOutputStream向文件中写入字符，,package cn.o

java使用 DataOutputStream向文件中写入字符，,package cn.o

package cn.outofmemory.snippets.core;import java.io.DataOutputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;public class WriteCharToFileWithDataOutputStream {    public static void main(String[] args) {        String filename = "output.txt";        FileOutputStream fos = null;        DataOutputStream dos = null;        try {            fos = new FileOutputStream(filename);            dos = new DataOutputStream(fos);            char c = 'A';            dos.writeChar(c);        }        catch (FileNotFoundException fnfe) {            System.out.println("File not found" + fnfe);        }        catch (IOException ioe) {            System.out.println("Error while writing to file" + ioe);        }        finally {            try {                if (dos != null) {                    dos.close();                }                if (fos != null) {                    fos.close();                }            }            catch (Exception e) {                System.out.println("Error while closing streams" + e);            }        }    }}