IIUC, make sure all your <entry-point/> classes implement EntryPoint.
Before 2.7, entry points weren't cast to EntryPoint, so you only had to 
have a method with "void onModuleLoad()" signature; starting with GWT 2.7 
(and specifically this 
commit: 
https://github.com/gwtproject/gwt/commit/3be1548873300d5bcb74c0258352c90abe7a42bd),
 
the entry points are cast to EntryPoint.

On Tuesday, June 12, 2018 at 10:13:13 AM UTC+2, dinesh kumar wrote:
>
> I was able to compile my code using latest GWT library.
>
> However while running, my i-frame does not load in the browser and 
> following error displays on the browser console:
>
> Tue Jun 12 13:41:26 GMT+530 2018 
> com.google.gwt.logging.client.LogConfiguration
> SEVERE: null
> java.lang.ClassCastException
> at Unknown.Throwable_0(Throwable.java:67)
> at Unknown.Exception_0(Exception.java:29)
> at Unknown.RuntimeException_0(RuntimeException.java:29)
> at Unknown.ClassCastException_0(ClassCastException.java:27)
> at Unknown.checkCriticalType(InternalPreconditions.java:154)
> at 
> Unknown.throwClassCastExceptionUnlessNull(InternalPreconditions.java:138)
> at 
> Unknown.init_9(com_00046ptc_00046windchill_00046wncgwt_00046WncGWTdebug__EntryMethodHolder.java:3)
> at Unknown.initializeModules(ModuleUtils.java:44)
> at Unknown.apply_0(Impl.java:309)
> at Unknown.entry0_0(Impl.java:368)
> at Unknown.anonymous(Impl.java:78)
> at Unknown.gwtOnLoad_0(ModuleUtils.java:55)
>
> Uncaught Error: java.lang.ClassCastException
>     at ClassCastException_0.createError 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62059)
>     at ClassCastException_0.initializeBackingError 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62104)
>     at ClassCastException_0.Throwable_0 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62009)
>     at ClassCastException_0.Exception_0 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62145)
>     at ClassCastException_0.RuntimeException_0 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:62179)
>     at new ClassCastException_0 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:480204)
>     at checkCriticalType (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:490918)
>     at throwClassCastExceptionUnlessNull 
> (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:458)
>     at Array.init_9 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:74335)
>     at initializeModules (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:46)
>     at apply_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63011)
>     at entry0_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63076)
>     at com.ptc.windchill.wncgwt.WncGWTdebug-0.js:63045
>     at gwtOnLoad_0 (com.ptc.windchill.wncgwt.WncGWTdebug-0.js:60)
>     at com.ptc.windchill.wncgwt.WncGWTdebug-0.js:495783
>
>
>
>
> On Thursday, June 7, 2018 at 7:11:02 PM UTC+5:30, Colin Alworth wrote:
>>
>> The errors you are getting aren't related to your Locale supersource (or 
>> at least not directly), but to the fact that your project has conflicting 
>> JRE sources which don't make sense, and so cannot be compiled. Your version 
>> of "gwtx" cannot be used with any version of GWT released within the last 9 
>> years or so.
>>
>> The first set of errors in your log, from GWT's internal i18n/etc, are 
>> the same error you are going to get from every type in your entire 
>> application, because java.lang.Object is broken in your project:
>> [ERROR] java.lang.Object cannot be resolved to a type
>>
>> Searching for Object.java shows us the root cause:
>>    [ERROR] Errors in 
>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Object.java'
>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to a 
>> type
>>
>> And in turn, searching for Throwable.java...
>>
>>      [java]       [ERROR] Errors in 
>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Throwable.java'
>>      [java]          [ERROR] java.io.PrintStream cannot be resolved to a 
>> type
>>
>> ...
>>
>>      [java]       [ERROR] Errors in 
>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/PrintStream.java'
>>      [java]          [ERROR] java.io.FilterOutputStream cannot be 
>> resolved to a type
>>
>> And finally
>>
>>      [java]       [ERROR] Errors in 
>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/FilterOutputStream.java'
>>      [java]          [ERROR] Line 74: The constructor 
>> IOException(Throwable) is undefined
>>
>> which by itself appears crazy, until you see where IOException comes 
>> from: 
>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/IOException.java'.
>>
>> Since GoogleCode is long dead, we can't see the sources there, but you 
>> can see them in some exported github projects, such as 
>> https://github.com/ttt43ttt/gwtx/blob/master/src/main/java/gwtx/java/io/emul/java/io/IOException.java.
>>  
>> You can see there that gwtx is missing this constructor, but GWT 2.8.2 
>> correctly has it (see 
>> https://gwt.googlesource.com/gwt/+/2.8.2/user/super/com/google/gwt/emul/java/io/IOException.java#37
>> ).
>>
>> This is the root issue - IOException is redefined in gwtx, and is 
>> incompatible with "modern" (i.e. less than 9 years old) gwt-user.jar. Fix 
>> this, and these other resulting issues should go away (though there may be 
>> more issues if you do not entirely remove gwtx.jar, and possibly also 
>> CoreGWT-src.jar as well, but I cannot say without actually seeing the 
>> sources inside).
>>
>>
>> On Thursday, June 7, 2018 at 8:07:23 AM UTC-5, dinesh kumar wrote:
>>>
>>> I have emulated few of the classes for example : java.util.Locale
>>>
>>> But now all my code is always referring to this class instead of jre 
>>> library. How and where can we specify where to look for?
>>>
>>>
>>>
>>> On Tuesday, June 5, 2018 at 12:27:44 PM UTC+5:30, dinesh kumar wrote:
>>>>
>>>> I have updated to GWT 2.8.2 and getting a compilation error : 
>>>>
>>>> Compilation unit 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_se.java'
>>>>  
>>>> is removed due to invalid reference(s):
>>>>      [java]          java.lang.String
>>>>      [java]       Compilation unit 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/NumberConstants.java'
>>>>  
>>>> is removed due to invalid reference(s):
>>>>      [java]          java.lang.String
>>>>      [java]       Compilation unit 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/dom/builder/client/DomMediaBuilderBase.java'
>>>>  
>>>> is removed due to invalid reference(s):
>>>>      [java]          java.lang.String
>>>>      [java]       Compilation unit 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/impl/cldr/DateTimeFormatInfoImpl_lkt.java'
>>>>  
>>>> is removed due to invalid reference(s):
>>>>      [java]          java.lang.String
>>>>      [java]       Compilation unit 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/impl/cldr/DateTimeFormatInfoImpl_jgo.java'
>>>>  
>>>> is removed due to invalid reference(s):
>>>>      [java]          java.lang.String
>>>>
>>>> .
>>>> .
>>>> .
>>>> ..
>>>>    [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Object.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/core/client/JavaScriptObject.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Throwable.java'
>>>>      [java]          [ERROR] java.io.PrintStream cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Class.java'
>>>>      [java]          [ERROR] 
>>>> com.google.gwt.core.client.JavaScriptObject cannot be resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/String.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/CloneNotSupportedException.java'
>>>>      [java]          [ERROR] java.lang.Exception cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/PrintStream.java'
>>>>      [java]          [ERROR] java.io.FilterOutputStream cannot be 
>>>> resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/io/PrintWriter.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StackTraceElement.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/ClassNotFoundException.java'
>>>>      [java]          [ERROR] java.lang.Exception cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/reflect/Method.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/CharSequence.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Iterable.java'
>>>>      [java]          [ERROR] java.util.Spliterator cannot be resolved 
>>>> to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/javaemul/internal/NativeRegExp.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/nio/charset/Charset.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StringBuffer.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/util/Locale.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/StringBuilder.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Comparator.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/UnsupportedEncodingException.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Exception.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/OutputStream.java'
>>>>      [java]          [ERROR] java.io.IOException cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/io/FilterOutputStream.java'
>>>>      [java]          [ERROR] Line 74: The constructor 
>>>> IOException(Throwable) is undefined
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/IntStream.java'
>>>>      [java]          [ERROR] java.util.OptionalDouble cannot be 
>>>> resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Spliterator.java'
>>>>      [java]          [ERROR] java.util.Comparator cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/SortedMap.java'
>>>>      [java]          [ERROR] java.util.Comparator cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/AbstractStringBuilder.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/LocaleInfo.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/IOException.java'
>>>>      [java]          [ERROR] java.lang.Exception cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/Closeable.java'
>>>>      [java]          [ERROR] java.io.IOException cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwtx-1.5.2.jar!/com/googlecode/gwtx/java/io/emul/java/io/Flushable.java'
>>>>      [java]          [ERROR] java.io.IOException cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/LongStream.java'
>>>>      [java]          [ERROR] java.util.OptionalDouble cannot be 
>>>> resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalDouble.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/gwt/java/lang/Integer.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalInt.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/DoubleStream.java'
>>>>      [java]          [ERROR] java.util.OptionalDouble cannot be 
>>>> resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/Stream.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/BaseStream.java'
>>>>      [java]          [ERROR] java.lang.AutoCloseable cannot be resolved 
>>>> to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/IntSummaryStatistics.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Double.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Long.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Map.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Appendable.java'
>>>>      [java]          [ERROR] java.io.IOException cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/DateTimeFormatInfo.java'
>>>>      [java]          [ERROR] 
>>>> com.google.gwt.i18n.shared.DateTimeFormatInfo cannot be resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/LocalizedNames.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/DateTimeConstants.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/ptc/fox_10/Windchill/srclib/wnc/CoreGWT-src.jar!/com/google/gwt/i18n/client/impl/LocaleInfoImpl.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/client/constants/NumberConstants.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/OptionalLong.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/LongSummaryStatistics.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/NumberFormatException.java'
>>>>      [java]          [ERROR] java.lang.IllegalArgumentException cannot 
>>>> be resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/Number.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/DoubleSummaryStatistics.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/function/Predicate.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/function/BinaryOperator.java'
>>>>      [java]          [ERROR] java.util.Comparator cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Optional.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/stream/Collector.java'
>>>>      [java]          [ERROR] java.util.Set cannot be resolved to a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/AutoCloseable.java'
>>>>      [java]          [ERROR] java.lang.Exception cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Collection.java'
>>>>      [java]          [ERROR] java.lang.Object cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/util/Set.java'
>>>>      [java]          [ERROR] java.util.Collection cannot be resolved to 
>>>> a type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/i18n/shared/DateTimeFormatInfo.java'
>>>>      [java]          [ERROR] java.lang.String cannot be resolved to a 
>>>> type
>>>>      [java]       [ERROR] Errors in 
>>>> 'jar:file:/opt/wnc/3rdPartyJars/lib/gwt-user.jar!/com/google/gwt/emul/java/lang/IllegalArgumentException.java'
>>>>      [java]          [ERROR] java.lang.Throwable cannot be resolved to 
>>>> a type
>>>>
>>>

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