関連ワード:  why predicate in java 8    predicate in java 8 example    predicate in java 8 javatpoint    predicate in java 8 interview questions    predicate in java 8 baeldung    predicate in java 8 api    predicate in java 8 docs    predicate in java 8 method    predicate in java 8 stream    predicate in java 8 geeksforgeeks