Java8ReduceClient.java

package trial.yy.java8.client.stream;

import java.util.Arrays;
import java.util.List;

/**
 * Java8 java.util.stream.Stream#reduce を試すためのサンプル
 * User: yy
 * Date: 13/04/16
 * Time: 22:44
 */
public class Java8ReduceClient {

    public static void main(String[] args) {

        // 操作対象の文字列を格納したList
        List<String> srclist = Arrays.asList("abc", "abcde", "defg", "x", "xyz", "zzzzzzzz");

        // 文字列Listの中の各文字列のlengthの合計を取得してみる
        int sumLength =
                srclist.stream().map(e -> e.length()).reduce(0, (sum, i) -> sum + i);

        System.out.println("sumLength: " + sumLength);
    }
}