Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// Licensed under the Apache License, Version 2.0 (the "License");

import java.lang.reflect.Array;

public class Main {
    /**
     * Copies the specified array, truncating or padding with nulls (if necessary)
     * so the copy has the specified length. For all indices that are valid in
     * both the original array and the copy, the two arrays will contain identical
     * values. For any indices that are valid in the copy but not the original,
     * the copy will contain null. Such indices will exist if and only if the
     * specified length is greater than that of the original array. The
     * resulting array is of exactly the same class as the original array.
     *
     * @param original the array to be copied
     * @param newLength the length of the copy to be returned
     * @return a copy of the original array, truncated or padded with nulls to
     * obtain the specified length
     */
    public static <T> T[] copyOf(T[] original, int newLength) {
        @SuppressWarnings({ "unchecked" })
        T[] copy = (T[]) Array.newInstance(original.getClass().getComponentType(), newLength);
        System.arraycopy(original, 0, copy, 0, Math.min(original.length, newLength));
        return copy;
    }
}