1. WIKI教程
2. Java.io包
3. void flush()

void flush()

描述 (Description)

java.io.OutputStreamWriter.flush()方法刷新流。

声明 (Declaration)

以下是java.io.OutputStreamWriter.flush()方法的声明。

public void flush()

参数 (Parameters)

NA

返回值 (Return Value)

此方法不返回值。

异常 (Exception)

IOException - 如果发生I/O错误。

例子 (Example)

以下示例显示了java.io.OutputStreamWriter.flush()方法的用法。

package com.iowiki;
import java.io.*;
public class OutputStreamWriterDemo {
   public static void main(String[] args) {
      try {
         // create a new OutputStreamWriter
         OutputStream os = new FileOutputStream("test.txt");
         OutputStreamWriter writer = new OutputStreamWriter(os);
         // create a new FileInputStream to read what we write
         FileInputStream in = new FileInputStream("test.txt");
         // write something in the file
         writer.write(70);
         // flush the stream
         System.out.println("Flushing Stream...");
         writer.flush();
         System.out.println("Stream flushed.");
         // read what we write
         System.out.println("" + (char) in.read());
      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}

让我们编译并运行上面的程序，这将产生以下结果 -

Flushing Stream...
Stream flushed.
F