Build: NetBeans IDE Dev (Build 20130527-0f8212f3381a)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.21-b01, Java(TM) SE Runtime Environment, 1.7.0_21-b11
OS: Windows 8

User Comments:
ralphbenjamin: Tried introduce variable for null (the occurence in new Result(....)), the code is from the clienteditor sample.

public Validator.Result validate(Integer arg) {        
    if ((arg < 1) || (arg > 199)) {
        return new Result(null, "Age range is 1-199");
    }
    
    return null;    
}




Stacktrace: 
java.lang.NullPointerException
   at org.netbeans.modules.java.hints.introduce.IntroduceHint.resolveType(IntroduceHint.java:1557)
   at org.netbeans.modules.java.hints.introduce.IntroduceHint.access$1000(IntroduceHint.java:160)
   at org.netbeans.modules.java.hints.introduce.IntroduceHint$IntroduceFix$1.run(IntroduceHint.java:1627)
   at org.netbeans.modules.java.hints.introduce.IntroduceHint$IntroduceFix$1.run(IntroduceHint.java:1617)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:644)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:634)