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Copy pathPipedIO.java
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executable file
·71 lines (62 loc) · 2.15 KB
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package com.brianway.learning.java.concurrent;
import java.io.IOException;
import java.io.PipedReader;
import java.io.PipedWriter;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
/**
* Using pipes for inter-task I/O
*/
public class PipedIO {
public static void main(String[] args) throws Exception {
Sender sender = new Sender();
Receiver receiver = new Receiver(sender);
ExecutorService exec = Executors.newCachedThreadPool();
exec.execute(sender);
exec.execute(receiver);
TimeUnit.SECONDS.sleep(4);
exec.shutdownNow();
}
}
class Sender implements Runnable {
private Random rand = new Random(47);
private PipedWriter out = new PipedWriter();
public PipedWriter getPipedWriter() {
return out;
}
public void run() {
try {
while (true)
for (char c = 'A'; c <= 'z'; c++) {
out.write(c);
TimeUnit.MILLISECONDS.sleep(rand.nextInt(500));
}
} catch (IOException e) {
System.out.println(e + " Sender write exception");
} catch (InterruptedException e) {
System.out.println(e + " Sender sleep interrupted");
}
}
}
class Receiver implements Runnable {
private PipedReader in;
public Receiver(Sender sender) throws IOException {
in = new PipedReader(sender.getPipedWriter());
}
public void run() {
try {
while (true) {
// Blocks until characters are there:
System.out.print("Read: " + (char) in.read() + ", ");
}
} catch (IOException e) {
System.out.println(e + " Receiver read exception");
}
}
}
/* Output: (65% match)
Read: A, Read: B, Read: C, Read: D, Read: E, Read: F, Read: G, Read: H, Read: I, Read: J, Read: K, Read: L, Read: M, java.lang.InterruptedException: sleep interrupted Sender sleep interrupted
java.io.InterruptedIOException Receiver read exception
*///:~