Returns a copy of the specified array. - Java Collection Framework

Java examples for Collection Framework:Array Element

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Description

Returns a copy of the specified array.

Demo Code


//package com.java2s;
import java.lang.reflect.Array;

public class Main {
    public static void main(String[] argv) throws Exception {
        Object array = "java2s.com";
        System.out.println(copyArray(array));
    }//from  w  w  w  .  java  2  s . co  m

    /**
     * Returns a copy of the specified array. If <i>array</i>
     * is not an array, the object itself will be returned.
     * Otherwise a copy of the array will be returned. The components
     * themselves are not cloned.
     * @param array the array
     * @return the copy of the array
     */
    public static Object copyArray(Object array) {
        if (!array.getClass().isArray())
            return array;
        Class componentType = array.getClass().getComponentType();
        int length = Array.getLength(array);
        Object copy = Array.newInstance(componentType,
                Array.getLength(array));
        for (int ii = 0; ii < length; ii++) {
            Array.set(copy, ii, Array.get(array, ii));
        }
        return copy;
    }
}

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