groovy - Where to find a NotNull java annotation -

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i searched @notnull java annotation , found 1 javax. tried use ran same issues described here. in short: need set stuff working - don't need (i in plain java/groovy context, no javaee). there alternatives mentioned annotation work standalone, find those?

oval can this.

download jar http://mvnrepository.com/artifact/net.sf.oval/oval/1.31 , @ documentation here http://oval.sourceforge.net/

for example:

import net.sf.oval.constraint.maxlength; import net.sf.oval.constraint.notempty; import net.sf.oval.constraint.notnull;  public class request { @notnull @notempty @maxlength(value = 30) private string id; //.....getters setters...... }

above pojo

/** * method returns if valid request or not */ private boolean isvalid(request request) { list<constraintviolation> violations = validator.validate(request);  if (violations.size() > 0) {     return false; } else {     return true; } }

and validation above.

you can find many more examples online.


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