protected void drain void defaultWriteObject protected boolean enableReplaceObject(boolean enable) 描述 所述java.io.ObjectOutputStream.drain()方法ObjectOutputStream中排出任何缓冲数据。与flush类似,但不会将flush传播到底层流。 声明 以下是java.io.ObjectOutputStream.drain()方法的声明。 protected void drain() 参数 NA 返回值 此方法不返回值。 异常 IOException - 如果在写入基础流时发生I / O错误。 实例 以下示例显示了java.io.ObjectOutputStream.drain()方法的用法。 package com.tutorialspoint; import java.io.*; public class ObjectOutputStreamDemo extends ObjectOutputStream{ public ObjectOutputStreamDemo(OutputStream out) throws IOException { super(out); } public static void main(String[] args) { int i = 319874; try { // create a new file with an ObjectOutputStream FileOutputStream out = new FileOutputStream("test.txt"); ObjectOutputStreamDemo oout = new ObjectOutputStreamDemo(out); // write something in the file oout.writeInt(i); oout.writeInt(1653984); // drain the stream oout.drain(); // close the stream oout.close(); // create an ObjectInputStream for the file we created before ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt")); // read and print an int System.out.println("" + ois.readInt()); // read and print an int System.out.println("" + ois.readInt()); } 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 319874 1653984 void defaultWriteObject protected boolean enableReplaceObject(boolean enable)