The system time - date

I read somewhere, the reason why Java does not have a "get" system, date -time function, is because the java can go onto so many platforms, if this is correct why cant the function test for what system it is on and take it from there?

RichardPrincipal wrote:
I read somewhere, the reason why Java does not have a "get" system, date -time function, is because the java can go onto so many platforms, if this is correct why cant the function test for what system it is on and take it from there?Java does have a get date - time function
see
System.currentTimeMillis/Nanos
and
java.util.Date

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[WLServer adminserver] Exception in thread "Timer-5" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at java.util.TimerThread.mainLoop(Timer.java:495)
[WLServer adminserver] at java.util.TimerThread.run(Timer.java:462)
[WLServer adminserver] Exception in thread "DynamicListenThread[Default]" java.lang.IllegalArgumentException: No class with name "com.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at java.util.logging.LogRecord.<init>(LogRecord.java:139)
[WLServer adminserver] at com.bea.logging.BaseLogRecord.<init>(BaseLogRecord.java:33)
[WLServer adminserver] at com.bea.logging.BaseLogRecord.<init>(BaseLogRecord.java:48)
[WLServer adminserver] at com.bea.logging.BaseLogRecord.<init>(BaseLogRecord.java:70)
[WLServer adminserver] at weblogic.logging.WLLogRecord.<init>(WLLogRecord.java:63)
[WLServer adminserver] at weblogic.logging.JDKLoggerFactory.createBaseLogRecord(JDKLoggerFactory.java:74)
[WLServer adminserver] at com.bea.logging.LoggingService.log(LoggingService.java:216)
[WLServer adminserver] at weblogic.server.ServerLogger.logListenThreadFailure(ServerLogger.java:205)
[WLServer adminserver] at weblogic.server.channels.DynamicListenThread.run(DynamicListenThread.java:197)
[WLServer adminserver] at java.lang.Thread.run(Thread.java:619)
[WLServer adminserver] Exception in thread "weblogic.timers.TimerThread" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at weblogic.timers.internal.TimerThread$Thread.run(TimerThread.java:256)
[WLServer adminserver] Exception in thread "Timer-4" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at java.util.TimerThread.mainLoop(Timer.java:495)
[WLServer adminserver] at java.util.TimerThread.run(Timer.java:462)
[WLServer adminserver] Exception in thread "ClusterNode-localhost" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at EDU.oswego.cs.dl.util.concurrent.Latch.attempt(Unknown Source)
[WLServer adminserver] at org.apache.jackrabbit.core.cluster.ClusterNode.run(ClusterNode.java:261)
[WLServer adminserver] at java.lang.Thread.run(Thread.java:619)
[WLServer adminserver] Exception in thread "Timer-1" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at java.util.TimerThread.mainLoop(Timer.java:495)
[WLServer adminserver] at java.util.TimerThread.run(Timer.java:462)
[WLServer adminserver] Exception in thread "ClusterNode-localhost" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at EDU.oswego.cs.dl.util.concurrent.Latch.attempt(Unknown Source)
[WLServer adminserver] at org.apache.jackrabbit.core.cluster.ClusterNode.run(ClusterNode.java:261)
[WLServer adminserver] at java.lang.Thread.run(Thread.java:619)
[WLServer adminserver] Exception in thread "Timer-2" java.lang.IllegalArgumentException: No class with name "com.abc.common.service.impl.MockSystem" found
[WLServer adminserver] at mockit.internal.util.Utilities.loadClass(Utilities.java:71)
[WLServer adminserver] at mockit.internal.MockingBridge.callMock(MockingBridge.java:156)
[WLServer adminserver] at mockit.internal.MockingBridge.invoke(MockingBridge.java:85)
[WLServer adminserver] at java.lang.System.currentTimeMillis(System.java)
[WLServer adminserver] at java.util.TimerThread.mainLoop(Timer.java:495)
[WLServer adminserver] at java.util.TimerThread.run(Timer.java:462)
[WLServer adminserver] Exception in thread "weblogic.time.TimeEventGenerator" java.util.MissingResourceException: Can't locate bundle for class 'weblogic.common.T3MiscLogLocalizer'
[WLServer adminserver] at weblogic.i18ntools.L10nLookup.getLocalizer(L10nLookup.java:427)
[WLServer adminserver] at weblogic.i18n.logging.CatalogMessage.<init>(CatalogMessage.java:47)
[WLServer adminserver] at weblogic.common.T3MiscLogger.logThrowable(T3MiscLogger.java:325)
[WLServer adminserver] at weblogic.time.common.internal.TimeEventGenerator.run(TimeEventGenerator.java:126)
[WLServer adminserver] at java.lang.Thread.run(Thread.java:619)
OR
Do anyone know any other way to overcome this issue using some other mocking jar.
Thanks
Edited by: 913136 on Feb 8, 2012 2:32 AM

Hi,
I could manage to change the time in JVM where the Weblogic server runs. I loaded an Spring bean from my Test class and from that bean I set an offset (to shift the time) in the Mock class (say, MockSystem class). In this case I used the jmockit implementation for instrumentation purposes. The MockSystem class should not be instantiated by us and jmockit takes care of that part. What I had to do was defining the javaagent and another parameter ("-Djmockit-mocks=com.abc.common.service.impl.MockSystem") in the Weblogic server build XML (mentioned in the following URL[1]). But to work this the MockSystem.class file should be wrapped in a JAR file and included in Weblogic server/lib directory and define it in the Weblogic build XML file as a classpath. For more explanations visit this URL [2].
[1]. http://jmockit.googlecode.com/svn/trunk/www/javadoc/mockit/Mockit.html#setUpStartupMocks%28java.lang.Object...%29
[2]. http://code.google.com/p/jmockit/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Tool%20Type%20Status%20Priority%20Summary&groupby=&sort=&id=207
Thanks
-thiwanka-

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