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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