'convert from java6 to java8 using stream and filter [closed]

I have the below code and need to convert to java8 using stream and filter.Can someone please help?

      for (CertEntity entity : listOfExpiredCert){
            if (entity!=null && entity.getCertVldToDt()!=null){
                if (entity.getCertSerNum()!=null && entity.getCertSerNum().equals(baseObject.getCertSerNum())){
                    continue;
                }
                else{
                    if (entity.getCertVldToDt()!=null && entity.getCertVldToDt().compareTo(baseDate)>0){
                        entityWithLatestDate = entity;
                    }
                    else if (entity.getCertVldToDt()!=null && entity.getCertVldToDt().compareTo(baseDate)<0){
                        entityWithLatestDate = baseObject;
                    }
                }
            }
        }
javajava-streamporting


Solution 1:[1]

if I understand correctly then you are just trying to find CertEntity with the latest CertVldToDt and matching CertSerNum to some baseObject. This code should do it:

entityWithLatestDate = listOfExpiredCert.stream()
            .filter(Objects::nonNull)
            .filter(entity -> entity.getCertSerNum() != null)
            .filter(entity -> entity.getCertVldToDt() != null)
            .filter(entity -> entity.getCertSerNum().equals(baseObject.getCertSerNum()))
            .filter(entity -> entity.getCertVldToDt().compareTo(baseDate) > 0)
            .max(Comparator.comparing(CertEntity::getCertVldToDt))
            .orElse(baseObject);

Sources

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Source: Stack Overflow

Solution Source
Solution 1 LordSkin

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