Java List from Array asList(Object value)

Description

as List

License

Open Source License

Declaration

public static List asList(Object value) 

Method Source Code

//package com.java2s;

import java.util.ArrayList;
import java.util.Arrays;

import java.util.Collections;
import java.util.Enumeration;

import java.util.List;

public class Main {
    public static List asList(Object value) {
        if (value == null) {
            return Collections.EMPTY_LIST;
        } else if (value instanceof List) {
            return (List) value;
        } else if (value.getClass().isArray()) {
            return Arrays.asList((Object[]) value);
        } else if (value instanceof Enumeration) {
            List answer = new ArrayList();
            for (Enumeration e = (Enumeration) value; e.hasMoreElements();) {
                answer.add(e.nextElement());
            }/*w ww.j a va  2 s  .  co  m*/
            return answer;
        } else {
            // lets assume its a collection of 1
            return Collections.singletonList(value);
        }
    }
}

Related

1. asList(long... array)
2. asList(Object info)
3. asList(Object o, Class cls)
4. asList(Object theone)
5. asList(Object value)
6. asList(Object[] array)
7. asList(Object[] array)
8. asList(Set set)
9. asList(String data)