Created
May 22, 2019 14:39
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Java Optional: alternative to .filter() with .isPresent() and .get()
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public String nameOfActiveMemberById(List<Member> members, int memberId) { | |
Optional<Member> maybeMember = members.stream() | |
.filter(member -> member.getId() == memberId) | |
.findFirst(); | |
if (maybeMember.isPresent() && maybeMember.get().isActive()) { | |
return maybeMember.get().getFullName(); | |
} else { | |
throw new NoActiveMemberException(); | |
} | |
} |
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