BonJoviGenerator.java

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
 
public class BonJoviGenerator {
 
    private static String name;
    private static final String SEPARATOR = "・";
    private static final List<String> list = new ArrayList<String>();
 
    public static void main(String[] args) {
	
	// 条件判定するラムダ式用クラス
	Predicate<String> printBadName = (String t) -> {
	    list.add(t);
	    if (list.size() < 3) {
		System.out.print(t + SEPARATOR);
		return false;
	    }
	    name = String.join(SEPARATOR, list.subList(list.size() - 3, list.size()));
 
	    if ("ｼﾞｮﾝ・ﾎﾞﾝ・ｼﾞｮｳﾞｨ".equals(name)) {
		System.out.println(name);
		System.out.println(list.size() + " Bon Jovis");
		System.out.println("＿人人人人人人人人人人人人人人＿");
		System.out.println("＞　You Give Love a Bad Name　＜");
		System.out.println("￣Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y^Y￣");
		return true;
	    }
	    System.out.print(name + SEPARATOR);
	    return false;
	};
 
	List<String> data = Arrays.asList("ﾎﾞ", "ﾝ", "ｼﾞｮ", "ｳﾞｨ");
	Random rnd = new Random();
	Stream.iterate(0, i -> i)
	    .map(i -> rnd.ints(0, data.size()).limit(2).mapToObj(data::get).collect(Collectors.joining()))
	    .anyMatch(s -> printBadName.test(s));
    }
}