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PORuntime.exec() no output
 

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    <p>Code that runs 4 'Street' processes:</p> <pre><code>for (int i=0; i &lt; NUM_STREETS; i++) { Process process = runtime.exec("java -classpath \\bin trafficcircle.Street 1 2"); InputStream is = process.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); String line; while ((line = br.readLine()) != null &amp;&amp; !line.isEmpty()) { System.out.println(line); System.out.flush(); } InputStream es = process.getErrorStream(); InputStreamReader esr = new InputStreamReader(es); BufferedReader br2 = new BufferedReader(esr); while ((line = br2.readLine()) != null &amp;&amp; !line.isEmpty()) { System.out.println(line); System.out.flush(); } int exitVal = process.waitFor(); System.out.println("Process exitValue: " + exitVal); } </code></pre> <p>Where 'Street' is:</p> <pre><code>public class Street { /** * @param args * 0 - Simulation run time * 1 - Flow time interval */ public static void main(String[] args) { System.out.println(args[0]); System.out.println(args[1]); System.out.flush(); } </code></pre> <p>}</p> <p>Prints out:</p> <pre><code>Error: Could not find or load main class trafficcircle.Street Process exitValue: 1 Error: Could not find or load main class trafficcircle.Street Process exitValue: 1 Error: Could not find or load main class trafficcircle.Street Process exitValue: 1 Error: Could not find or load main class trafficcircle.Street Process exitValue: 1 </code></pre> <p>'Street.class' in my Eclipse project is under \bin in package trafficcircle. I thought Runtime.exec would complain first if it wasn't found...what's up with this?</p>
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    1. COHave you tried to System.out.flush()? On both ends?
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    2. COJust did, as edited, but still nothing.
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    3. COHave you tried running that command from the prompt? Try reading the error stream of the subprocess and see if anything helpful is being printed to that.
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      1. USTim Bender
 

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