Java DataOutputStream writeUTF()方法

java.io.DataOuputStream.writeUTF(String str) 用于以可移植的方式使用UTF-8编码将字符串写入输出流。

1 语法

public final void writeUTF(String str)

2 参数

str：要写入输出流的字符串。

3 返回值

无

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.DataOuputStream.writeUTF(String str)方法的例子
 */
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class Demo {
    public static void main(String[] args) throws IOException {
        InputStream is = null;
        DataInputStream dis = null;
        FileOutputStream fos = null;
        DataOutputStream dos = null;
        String[] s = {"Hello", "World!!"};

        try {
            // create file output stream
            fos = new FileOutputStream("d:\\test.txt");

            // create data output stream
            dos = new DataOutputStream(fos);

            // for each  string in string buffer
            for(String j:s) {

                // write string encoded as modified UTF-8
                dos.writeUTF(j);
            }

            // force data to the underlying file output stream
            dos.flush();

            // create file input stream
            is = new FileInputStream("d:\\test.txt");

            // create new data input stream
            dis = new DataInputStream(is);

            // available stream to be read
            while(dis.available()>0) {

                // reads characters encoded with modified UTF-8
                String k = dis.readUTF();

                // print
                System.out.print(k+" ");
            }
        } catch(Exception e) {
            // if any error occurs
            e.printStackTrace();
        } finally {
            // releases all system resources from the streams
            if(is!=null)
                is.close();
            if(dis!=null)
                dis.close();
            if(fos!=null)
                fos.close();
            if(dos!=null)
                dos.close();
        }
    }
}

输出结果为：

Hello World!!