A DESCRIPTION OF THE PROBLEM :
IOException should thrown– if the pipe is broken, unconnected, closed, or if an I/O error occurs.
But when length is 0, this check passed.


---------- BEGIN SOURCE ----------
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;

public class ClosedWrite {
    public static void main(String[] argv) throws Exception {
        PipedOutputStream os = new PipedOutputStream();
        PipedInputStream is = new PipedInputStream();
        os.connect(is);
        os.close();
        
        // Test zero-length write on closed stream
        try {
            byte[] data = {1, 2, 3};
            os.write(data, 0, 0);
            throw new RuntimeException("No IOException upon zero-length write on closed Stream");
        } catch(IOException e) {
            System.err.println("Test passed: IOException thrown for zero-length write");
        }
    }
}
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