Java List Copy copyOfRange(List list, int from, int to)

Description

Returns a new list containing all elements of the original list with an index in [from;to]

License

Open Source License

Parameter

Parameter	Description
T	Type of list elements
list	Basic list for operation
from	Start-index (inclusive) for copy operation
to	End-index (inclusive) for copy operation

Return

The sublist of list starting at index from and ending at index to

Declaration

public static <T> List<T> copyOfRange(List<T> list, int from, int to) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.ArrayList;

import java.util.List;

public class Main {
    /**//from w  w w . j  a  v a2 s.c  o m
     * Returns a new list containing all elements of the original list with an
     * index in [from;to]
     * 
     * @param <T>
     *            Type of list elements
     * @param list
     *            Basic list for operation
     * @param from
     *            Start-index (inclusive) for copy operation
     * @param to
     *            End-index (inclusive) for copy operation
     * @return The sublist of <code>list</code> starting at index
     *         <code>from</code> and ending at index <code>to</code>
     */
    public static <T> List<T> copyOfRange(List<T> list, int from, int to) {
        if (from < 0 || from >= list.size() || to < 0 || to >= list.size() || from > to)
            throw new IllegalArgumentException("Illegal extraction bounds");
        List<T> result = new ArrayList<>(to - from + 1);
        for (int i = from; i <= to; i++)
            result.add(list.get(i));
        return result;
    }
}

Related

1. copyNullable(List original)
2. copyNullSafeMutableList(Collection list)
3. copyObjectList(List