Java List First Item first(List list)

Description

Returns the first element of the passed list, null if the list is empty or null.

License

Apache License

Declaration

public static <T> T first(List<T> list) 

Method Source Code

//package com.java2s;
// Licensed under the Apache License, Version 2.0 (the "License");

import java.util.Collection;

import java.util.List;

public class Main {
    /**/* w ww. j a v  a2 s. co  m*/
     *  Returns the first element of the passed list, <code>null</code> if
     *  the list is empty or null.
     */
    public static <T> T first(List<T> list) {
        return isNotEmpty(list) ? list.get(0) : null;
    }

    /**
     *  Returns <code>true</code> if the passed collection is not <code>null</code>
     *  and has size &gt; 0.
     */
    public static boolean isNotEmpty(Collection<?> c) {
        return (c != null) && (c.size() > 0);
    }
}

Related

1. first(List l)
2. first(List list)
3. first(List list)
4. first(List list)
5. first(List list)
6. first(List list)
7. first(List list)
8. first(List list)
9. first_nItems(int n, Collection fromList)