Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.Collections;

import java.util.List;

import java.util.function.Function;
import java.util.stream.Collectors;

public class Main {
    public static <T, R> List<R> map(List<T> list, Function<T, R> fun) {
        return list.stream().map(fun::apply).collect(Collectors.toList());
    }

    public static List<?> toList(Object obj) {
        if (obj instanceof List) {
            return (List<?>) obj;
        } else if (obj == null) {
            return Collections.emptyList();
        } else {
            return Collections.singletonList(obj);
        }
    }
}