void close abstract void write(int b) void flush 描述 所述java.io.OutputStreamWriter.close()方法关闭该流,第一刷新它。关闭流后,进一步的write()或flush()调用将导致抛出IOException。关闭先前关闭的流无效。 声明 以下是java.io.OutputStreamWriter.close()方法的声明。 public void close() 参数 NA 返回值 此方法不返回值。 异常 IOException - 如果发生I / O错误。 实例 以下示例显示了java.io.OutputStreamWriter.close()方法的用法。 package com.tutorialspoint; 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 writer.flush(); // read what we write System.out.println("" + (char) in.read()); // close the stream System.out.println("Closing Stream..."); writer.close(); System.out.println("Stream closed."); } 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 F Closing Stream... Stream closed. abstract void write(int b) void flush