java.io.DataOutputStream.flush() 一种方法是强制将字节写入基础流。
声明
以下是java.io.DataOutputStream.flush()方法的声明:
public void flush()
参数
-
NA
返回值
此方法不返回任何值
异常
-
IOException -- 如果发生I/ O错误。
例子
下面的示例演示java.io.DataOutputStream.flush()方法的用法。
package com.yiibai; 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 DataInputStreamDemo { 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("c:\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); } // forces data to the underlying file output stream dos.flush(); // create file input stream is = new FileInputStream("c:\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(); } } }
让我们编译和运行上面的程序,这将产生以下结果:
Hello World!!