When agent is trying to start it fails with exception:
Exception in thread "Agent164" THREAD Agent725 STARTED com.sun.javatest.agent.Agent$1java.lang.NoClassDefFoundError: Could not initialize class java.net.SocksSocketImpl

This exception caused by security exception thrown by own JavaTest security manager since PlainSocketImpl class in Java SE 7 tries to read system properties in privilige block. But JavaTest denies this for all security domains, not only for tests classes.
Fix failed because:

Without option -Djavatest.security.allowPropertiesAccess=true all tests fail in MultiJVM group mode with the following error:
java.lang.NoClassDefFoundError: Could not initialize class java.net.SocksSocketImpl
at java.net.ServerSocket.setImpl(ServerSocket.java:289)
at java.net.ServerSocket.<init>(ServerSocket.java:230)
at java.net.ServerSocket.<init>(ServerSocket.java:128)
at com.sun.jck.lib.multijvm.group.TaskManager.run(TaskManager.java:151)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
or with the following exception:
java.lang.ExceptionInInitializerError
at java.net.ServerSocket.setImpl(ServerSocket.java:289)
at java.net.ServerSocket.<init>(ServerSocket.java:230)
at java.net.ServerSocket.<init>(ServerSocket.java:128)
at com.sun.jck.lib.multijvm.group.TaskManager.run(TaskManager.java:151)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.SecurityException: Action forbidden by JavaTest Harness: checkPropertiesAccess
at com.sun.javatest.JavaTestSecurityManager.checkPropertiesAccess(JavaTestSecurityManager.java:135)
at java.lang.System.getProperties(System.java:622)
at java.net.PlainSocketImpl$1.run(PlainSocketImpl.java:62)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.PlainSocketImpl.<clinit>(PlainSocketImpl.java:58)
... 7 more
Tests pass in MultiJVM mode. Tests also pass in MultiJVM group mode if option is specified.

Passive agent:
java.lang.NoClassDefFoundError: Could not initialize class java.net.SocksSocketImpl
   at java.net.Socket.setImpl(Socket.java:493)
   at java.net.Socket.<init>(Socket.java:414)
   at java.net.Socket.<init>(Socket.java:208)
   at com.sun.javatest.agent.SocketConnection.<init>(SocketConnection.java:91)
   at com.sun.javatest.agent.InterruptableSocketConnection.<init>(InterruptableSocketConnection.java:40)
   at com.sun.javatest.agent.AgentManager.connectToPassiveAgent(AgentManager.java:210)
   at com.sun.javatest.agent.AgentManager.connectToPassiveAgent(AgentManager.java:190)
   at com.sun.javatest.agent.PassiveAgentCommand.run(PassiveAgentCommand.java:119)
   at com.sun.javatest.Script.invokeClass(Script.java:1091)
   at com.sun.javatest.Script.invokeCommand(Script.java:1002)
   at com.sun.jck.lib.IntermediateScript.invokeCommand(IntermediateScript.java:110)
   at com.sun.javatest.Script.execute(Script.java:893)
   at com.sun.jck.lib.JCKScript.runRuntimeTest(JCKScript.java:707)
   at com.sun.jck.lib.JCKScript.run(JCKScript.java:139)
   at com.sun.javatest.Script.run(Script.java:228)
   at com.sun.jck.lib.IntermediateScript.run(IntermediateScript.java:223)
   at com.sun.javatest.DefaultTestRunner.runTest(DefaultTestRunner.java:174)
   at com.sun.javatest.DefaultTestRunner.access$100(DefaultTestRunner.java:43)
   at com.sun.javatest.DefaultTestRunner$1.run(DefaultTestRunner.java:66)

Active agent:
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Could not
initialize class java.net.SocksSocketImpl
       at java.net.ServerSocket.setImpl(ServerSocket.java:289)
       at java.net.ServerSocket.<init>(ServerSocket.java:230)
       at java.net.ServerSocket.<init>(ServerSocket.java:181)
       at com.sun.javatest.agent.SocketConnection.createServerSocket(SocketConn
ection.java:226)
       at com.sun.javatest.agent.SocketConnection.createServerSocket(SocketConn
ection.java:204)
       at com.sun.javatest.agent.ActiveAgentPool.setListening(ActiveAgentPool.j
ava:493)
       at com.sun.javatest.agent.AgentMonitorTool$AgentPoolSubpanel.itemStateCh
anged(AgentMonitorTool.java:235)
       at javax.swing.AbstractButton.fireItemStateChanged(AbstractButton.java:2
046)
       at javax.swing.AbstractButton$Handler.itemStateChanged(AbstractButton.ja
va:2348)
       at javax.swing.DefaultButtonModel.fireItemStateChanged(DefaultButtonMode
l.java:455)
       at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton
.java:272)
       at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.
java:289)
       at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL
istener.java:252)
       at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:2
89)
       at java.awt.Component.processMouseEvent(Component.java:6504)
       at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
       at java.awt.Component.processEvent(Component.java:6269)
       at java.awt.Container.processEvent(Container.java:2229)
       at java.awt.Component.dispatchEventImpl(Component.java:4860)
       at java.awt.Container.dispatchEventImpl(Container.java:2287)
       at java.awt.Component.dispatchEvent(Component.java:4686)
       at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832
)
       at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)

       at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
       at java.awt.Container.dispatchEventImpl(Container.java:2273)
       at java.awt.Window.dispatchEventImpl(Window.java:2713)
       at java.awt.Component.dispatchEvent(Component.java:4686)
       at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
       at java.awt.EventQueue.access$000(EventQueue.java:101)
       at java.awt.EventQueue$3.run(EventQueue.java:666)
       at java.awt.EventQueue$3.run(EventQueue.java:664)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:76)
       at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:87)
       at java.awt.EventQueue$4.run(EventQueue.java:680)
       at java.awt.EventQueue$4.run(EventQueue.java:678)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:76)
       at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
       at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:211)
       at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:128)
       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:117)
       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

       at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Fix failed because without option -Djavatest.security.allowPropertiesAccess=true JavaTest doesn't execute tests. All tests executions result to ERROR with the following output:
java.lang.ExceptionInInitializerError
at java.net.ServerSocket.setImpl(ServerSocket.java:288)
at java.net.ServerSocket.<init>(ServerSocket.java:230)
at java.net.ServerSocket.<init>(ServerSocket.java:128)
at com.sun.jck.lib.multijvm.group.TaskManager.run(TaskManager.java:151)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.SecurityException: Action forbidden by JavaTest Harness: checkPropertiesAccess
at com.sun.javatest.JavaTestSecurityManager.checkPropertiesAccess(JavaTestSecurityManager.java:135)
at java.lang.System.getProperties(System.java:622)
at java.net.PlainSocketImpl$1.run(PlainSocketImpl.java:62)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.PlainSocketImpl.<clinit>(PlainSocketImpl.java:58)
... 7 more
result: Error. Unexpected: java.lang.ExceptionInInitializerError