JAVA代码题 创建一个碟包，需要能保存CD和DVD碟片，记录碟片的发行信息，有存入、取出、外借、归还、点数、遍历等功能。

以下是一个简单的Java代码实现，包含了所述的基本功能：

// 碟片类
class Disc {
private String title; // 碟片名称
private String artist; // 艺术家/演员
private String genre; // 风格/流派
private int year; // 发行年份
private boolean isLent; // 是否借出
private String borrower; // 借出人

public Disc(String title, String artist, String genre, int year) {
this.title = title;
this.artist = artist;
this.genre = genre;
this.year = year;
this.isLent = false;
this.borrower = null;
}

public String getTitle() {
return title;
}

public String getArtist() {
return artist;
}

public String getGenre() {
return genre;
}

public int getYear() {
return year;
}

public boolean isLent() {
return isLent;
}

public void lend(String borrower) {
if (isLent) {
System.out.println("This disc is already lent out!");
} else {
isLent = true;
this.borrower = borrower;
System.out.println("Successfully lent out to " + borrower);
}
}

public void returnDisc() {
if (isLent) {
isLent = false;
borrower = null;
System.out.println("Successfully returned!");
} else {
System.out.println("This disc is not currently lent out.");
}
}

public void printDetails() {
System.out.println("Title: " + title);
System.out.println("Artist: " + artist);
System.out.println("Genre: " + genre);
System.out.println("Year: " + year);
if (isLent) {
System.out.println("Currently lent out to: " + borrower);
} else {
System.out.println("Currently available.");
}
}
}

// 碟包类
class DiscPackage {
private ArrayList<Disc> discs;

public DiscPackage() {
discs = new ArrayList<Disc>();
}

public void addDisc(Disc disc) {
discs.add(disc);
System.out.println("Successfully added disc: " + disc.getTitle());
}

public void removeDisc(Disc disc) {
if (discs.remove(disc)) {
System.out.println("Successfully removed disc: " + disc.getTitle());
} else {
System.out.println("Disc not found in package.");
}
}

public Disc findDisc(String title) {
for (Disc disc : discs) {
if (disc.getTitle().equals(title)) {
return disc;
}
}
return null;
}

public void lendDisc(String title, String borrower) {
Disc disc = findDisc(title);
if (disc != null) {
disc.lend(borrower);
} else {
System.out.println("Disc not found in package.");
}
}

public void returnDisc(String title) {
Disc disc = findDisc(title);
if (disc != null) {
disc.returnDisc();
} else {
System.out.println("Disc not found in package.");
}
}

public void printDetails() {
if (discs.size() == 0) {
System.out.println("The disc package is empty.");
} else {
System.out.println("Disc package contents:");
for (Disc disc : discs) {
disc.printDetails();
System.out.println();
}
}
}
}

// 测试代码
public class Main {
public static void main(String[] args) {
Disc cd = new Disc("The Dark Side of the Moon", "Pink Floyd", "Progressive rock", 1973);
Disc dvd = new Disc("The Lord of the Rings: The Fellowship of the Ring", "Peter Jackson", "Fantasy", 2001);

DiscPackage package1 = new DiscPackage();
package1.addDisc(cd);
package1.addDisc(dvd);

package1.printDetails();

package1.lendDisc("The Dark Side of the Moon", "John Smith");
package1.lendDisc("The Dark Side of the Moon", "Jane Doe");

package1.printDetails();

package1.returnDisc("The Dark Side of the Moon");
package1.returnDisc("The Dark Side of the Moon");

package1.printDetails();
}
}