Java Stream How to - Map to get substring and convert to int then get max value

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Question

We would like to know how to map to get substring and convert to int then get max value.

Answer

//w w w. j av a2s.com
import java.util.stream.Stream;

public class Main {

  public static void main(String[] args) throws Exception {
    Stream.of("a1", "a2", "a3")
    .map(s -> s.substring(1))
    .mapToInt(Integer::parseInt)
    .max()
    .ifPresent(System.out::println);
  }

}

The code above generates the following result.

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