MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.lang.reflect.Array;
import java.util.Random;

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

    private static void printType(Object object) {
        Class type = object.getClass();
        if (type.isArray()) {
            Class elementType = type.getComponentType();
            System.out.println("Array of: " + elementType);
            System.out.println("Array size: " + Array.getLength(object));
        }
    }

    private static void fillArray(Object array) {
        int length = Array.getLength(array);
        Random generator = new Random(System.currentTimeMillis());
        for (int i = 0; i < length; i++) {
            int random = generator.nextInt();
            Array.setInt(array, i, random);
        }
    }

    private static void displayArray(Object array) {
        int length = Array.getLength(array);
        for (int i = 0; i < length; i++) {
            int value = Array.getInt(array, i);
            System.out.println("Position: " + i + ", value: " + value);
        }
    }
}