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    Thrown when an application is trying to use or access an object whose reference equals to null but if you are getting no message, try using the option -XX:-OmitStackTraceInFastThrow.

Solutions on the web

via GitHub by jgashe
, 1 year ago
This exception has no message.
via Google Groups by Ritz, 5 months ago
This exception has no message.
via GitHub by ex00
, 1 year ago
This exception has no message.
via Google Groups by Stefan Bielenberg, 9 months ago
This exception has no message.
via Google Groups by Undeleterious, 10 months ago
java.lang.NullPointerException at java.io.Reader.<init>(Unknown Source) at java.io.InputStreamReader.<init>(Unknown Source) at org.raml.parser.utils.StreamUtils.reader(StreamUtils.java:37) at org.raml.parser.visitor.YamlValidationService.validate(YamlValidationService.java:82) at org.raml.parser.visitor.YamlValidationService.validate(YamlValidationService.java:72) at com.company.ramlvalidator.Generator.parseArgs(Generator.java:50) at com.company.ramlvalidator.Generator.main(Generator.java:28)