MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.lang.reflect.Array;

public class MainClass {
    public static void main(String args[]) {
        int[] array = (int[]) Array.newInstance(int.class, 3);

        for (int i = 0; i < array.length; i++) {
            array[i] = i;

        }

        int[] arrayDoubled = (int[]) doubleArray(array);

        for (int i : arrayDoubled) {
            System.out.println(i);
        }
    }

    static Object doubleArray(Object original) {
        Object returnValue = null;
        Class type = original.getClass();
        if (type.isArray()) {
            int length = Array.getLength(original);
            Class elementType = type.getComponentType();
            returnValue = Array.newInstance(elementType, length * 2);
            System.arraycopy(original, 0, returnValue, 0, length);
        }
        return returnValue;
    }

}