package oop10_objectarray;

public class ShallowCopy {

public static void main(String[] args) {

Book[] library = new Book[3];

Book[] copyLibrary = new Book[3];

library[0] = new Book("태백산맥1", "조정래");

library[1] = new Book("태백산맥2", "조정래");

library[2] = new Book("태백산맥3", "조정래");

System.arraycopy(library, 0, copyLibrary, 0, 3);

//System.arraycopy vs. Arrays.copyOf

//copyOf 메서드는 단순히 arraycopy를 래핑한 메서드.

//주요 차이점은 arraycopy는 이미 존재하는 array에 특정 array를 복사하는 것인데,

//copyOf는 "새로운 array를 생성"하고 특정 array를 복사하는 것

// public static int[] copyOf(int[] original, int newLength) {

// int[] copy = new int[newLength];

// System.arraycopy(original, 0, copy, 0, Math.min(original.length, newLength));

// return copy;

// }

System.out.println("==========copy library============");

for(Book book : copyLibrary) {

book.showBookInfo();

}

library[0].setTitle("나목");

library[0].setAuthor("박완서");

System.out.println("==========library============");

for(Book book : library) {

book.showBookInfo();

}

System.out.println("==========copy library============");

for(Book book : copyLibrary) {

book.showBookInfo();

}

}

}