Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Set;

public class Main {
    public static <T> List<T> safe(List<T> l) {
        if (l == null) {
            return Collections.emptyList();
        }
        return l;
    }

    public static <T> Set<T> safe(Set<T> l) {
        if (l == null) {
            return Collections.emptySet();
        }
        return l;
    }

    public static <T> Collection<T> safe(Collection<T> l) {
        if (l == null) {
            return Collections.emptyList();
        }
        return l;
    }
}