JavaTest Active Agent accept zero port value and throw IllegalArgumentException.
How to reproduce:
1. Start JavaTest Agent
2. Set port value to zero
3. Click on Start button
JavaTest Agent will start to connect on zero port. No error or warning will be shown but exception is thrown in command line:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException
        at com.sun.javatest.agent.ActiveConnectionFactory.<init>(ActiveConnectio
nFactory.java:49)
        at com.sun.javatest.agent.ActiveModeOptions.createConnectionFactory(Acti
veModeOptions.java:65)
        at com.sun.javatest.agent.AgentPanel$ParamPanel.createAgent(AgentPanel.j
ava:853)
        at com.sun.javatest.agent.AgentPanel.start(AgentPanel.java:164)
        at com.sun.javatest.agent.AgentPanel$ButtonPanel.actionPerformed(AgentPa
nel.java:511)
        at java.awt.Button.processActionEvent(Button.java:409)
        at java.awt.Button.processEvent(Button.java:377)
        at java.awt.Component.dispatchEventImpl(Component.java:4866)
        at java.awt.Component.dispatchEvent(Component.java:4691)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
        at java.awt.EventQueue.access$000(EventQueue.java:102)
        at java.awt.EventQueue$3.run(EventQueue.java:662)
        at java.awt.EventQueue$3.run(EventQueue.java:660)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:75)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:86)
        at java.awt.EventQueue$4.run(EventQueue.java:676)
        at java.awt.EventQueue$4.run(EventQueue.java:674)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:75)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:216)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:135)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:123)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)