throw exception in lambda - java 8

Question

I'm using lambda expressions. What is the equivalent of this:

for (Integer id: ids) { if (!repository.exists(id)) { throw new Exception ..... } }

I tried using this:

ids.stream().filter(id-> repository.exists(idStatut)).findAny().orElseThrow(() -> new Exception... );

But it doesn't work well

Eran · Accepted Answer · 2017-12-27 10:13:15Z

Based on your original loop, you want to throw an exception if any of the Integers don't pass the filter:

if (ids.stream().anyMatch(id -> !repository.exists(id))) throw new Exception ...

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