Java.io.PrintStream.write Byte() 方法 Java.io.PrintStream.write byte len() 方法 Java.io.PrintWriter.append() 方法 Java.io.PrintStream.write Byte() 方法 package com.codingdict; import java.io.*; public class PipedReaderDemo { public static void main(String[] args) { // create a new Piped writer and reader PipedWriter writer = new PipedWriter(); PipedReader reader = new PipedReader(); try { // connect the reader and the writer reader.connect(writer); // write something writer.write(70); writer.write(71); // check if reader is ready to read System.out.println("" + reader.ready()); // print the char array for (int i = 0; i < 2; i++) { System.out.println("" + (char) reader.read()); } } catch (IOException ex) { ex.printStackTrace(); } } } Java.io.PrintStream.write byte len() 方法 Java.io.PrintWriter.append() 方法