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Java SE 11 パイプでOutputStreamとInputStreamを接続する

Last updated at Posted at 2021-12-28
        /* インスタンス */
        PipedOutputStream pipedOutputStream = new PipedOutputStream(); //パイプの送信側 上流
        PipedInputStream pipedInputStream = new PipedInputStream(); //パイプの受信側 下流

        /* 送信側と受信側の接続 */
        pipedOutputStream.connect(pipedInputStream); //connect()は送信側と受信側のどちら一方から呼び出す


        /* パイプへの送信 */
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(pipedOutputStream))
        bufferedWriter.write("テキスト");
        bufferedWriter.flush(); // flush()を呼び出すことでデータは受信側のバッファに送られる

        /* パイプからの受信 */
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(pipedInputStream))
        System.out.println(bufferedReader.readLine());

        /* 切断 */
        bufferedWriter.close() //送信側のclose()を呼び出しても受信側のバッファを読み込むことは可能
        bufferedReader.close()

参考

PipedOutputStream
PipedInputStream

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