PipedReader/PipedWriter 管道流進行多線程通訊

管道流（pipeStream）是種特殊的流，用於在不同線程間傳送數據，一個線程一端發送數據到管道，另外一個線程從輸入管道讀取

管道流有兩種：

字符流：PipedReader、PipedWriter

字節流：PipedInputStrean、PipedOutputStram

以下爲字符流實例代碼

package com.yifeng.PipedOutputStream;

import java.io.IOException;
import java.io.PipedReader;
import java.io.PipedWriter;

public class PipedWriteTest {

	public static class ThradPipedReaderA extends Thread{
		
	PipedReader pipedReader;
		
		
		public ThradPipedReaderA(PipedReader pipedReader) {
			this.pipedReader =pipedReader;
		}

		@Override
		public void run() {
			
			try {
				char[] chararray =new char[20];
				int readLenth = pipedReader.read(chararray);
				while (readLenth!=-1) {
					String str =new String(chararray, 0	,readLenth);
					System.out.println("讀到的數據爲："+str);
					readLenth= pipedReader.read(chararray);
					
				}
				pipedReader.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	public  static class ThradPipedWriteB extends Thread{
		
		PipedWriter pipedWriter;
			
			
			public ThradPipedWriteB(PipedWriter pipedWriter) {
				this.pipedWriter =pipedWriter;
			}

			@Override
			public void run() {
				
				try {
					for (int i = 0; i <=10; i++) {
						pipedWriter.write("發送數據"+i);
					}
					pipedWriter.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	
	
	public static void main(String[] args) throws IOException {
		
		PipedReader pipedReader =new PipedReader();
		PipedWriter pipedWriter =new PipedWriter();
		
		pipedReader.connect(pipedWriter);// 做個鏈接才能通訊
		ThradPipedReaderA a =new ThradPipedReaderA(pipedReader);
		ThradPipedWriteB b =new ThradPipedWriteB(pipedWriter);
		a.start();
		b.start();
		
	}
	
}

結果爲：