WebLogic Server — using WLST commands from Java

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import java.io.IOException;
import java.io.OutputStream;

// from weblogic.jar
import org.python.core.PyLong;
import org.python.util.InteractiveInterpreter;
import weblogic.management.scripting.utils.WLSTInterpreter;

public class WSTLClient
{
  public static void main(String[] args)
  {
    InteractiveInterpreter interpreter = new WLSTInterpreter();    

    // WLST output to dev/null
    interpreter.setOut(new NullOutputStream());

    // Run commands no results
    interpreter.exec("connect('user','password','t3://host:port')");
    interpreter.exec("serverRuntime()");

    // Run command with result
    PyLong result = (PyLong)interpreter.eval("cmo.getActivationTime()");

    // calculate uptime
    long startTime = result.getValue().longValue();    
    long currentTime = System.currentTimeMillis();
    long uptimeMilli = currentTime - startTime;
    long uptimeMins = (uptimeMilli / 1000L) / 60L;

    System.out.println( "Server Uptime: " + uptimeMins + "min");
  }

  // custom class to iplement noop output stream
  public static class NullOutputStream extends OutputStream
  {
    @Override public void write(int b) throws IOException {}
    @Override public void write(byte[] b) throws IOException {}
    @Override public void write(byte[] b, int off, int len) throws IOException { }
  }
}