Implement Java bindings for pipe io client

clients/java/PipeIO.java

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+import java.io.IOException;
+
+
+public class PipeIO implements AutoCloseable {
+    protected PipeReader reader;
+    protected PipeWriter writer;
+
+    public PipeIO(String in_pipe_path, String out_pipe_path) throws IOException {
+        this.reader = new PipeReader(in_pipe_path);
+        this.writer = new PipeWriter(out_pipe_path);
+    }
+
+    public void close() throws IOException {
+        this.reader.close();
+        this.writer.close();
+    }
+
+    public void run() throws IOException {
+        String msg;
+        while ((msg = this.reader.recvMessage()) != null) {
+            this.handleMessage(msg);
+        }
+    }
+
+    public void handleMessage(String msg) throws IOException {}
+}

clients/java/PipeReader.java

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+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.lang.AutoCloseable;
+
+
+public class PipeReader implements AutoCloseable {
+    private BufferedReader pipe;
+
+    public PipeReader(String pipe_path) throws IOException {
+        this.pipe = new BufferedReader(new FileReader(pipe_path));
+    }
+
+    public void close() throws IOException {
+        this.pipe.close();
+    }
+
+    public String recvMessage() throws IOException {
+        return this.pipe.readLine();
+    }
+}

clients/java/PipeWriter.java

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+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.AutoCloseable;
+
+
+public class PipeWriter implements AutoCloseable {
+    private BufferedWriter pipe;
+
+    public PipeWriter(String pipe_path) throws IOException {
+        this.pipe = new BufferedWriter(new FileWriter(pipe_path));
+    }
+
+    public void close() throws IOException {
+        this.pipe.close();
+    }
+
+    public void sendMessage(String msg) throws IOException {
+        this.pipe.write(msg + "\n");
+        this.pipe.flush();
+    }
+}

clients/java/Test.java

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+import java.io.IOException;
+
+
+public class Test extends PipeIO {
+    public Test(String in_pipe_path, String out_pipe_path) throws IOException {
+        super(in_pipe_path, out_pipe_path);
+    }
+
+    @Override
+    public void handleMessage(String msg) throws IOException {
+        this.writer.sendMessage(msg);
+    }
+
+    public static void main(String[] args) {
+        try(Test test = new Test("in", "out")) {
+            test.run();
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}