java面向对象对象数组示例

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以下是另一个Java面向对象示例，其中包含一个对象数组：

class Book {
    String title;
    String author;
    int year;

    public Book(String title, String author, int year) {
        this.title = title;
        this.author = author;
        this.year = year;
    }

    public String getTitle() {
        return title;
    }

    public String getAuthor() {
        return author;
    }

    public int getYear() {
        return year;
    }
}

public class Example {
    public static void main(String[] args) {
        Book[] library = new Book[3];
        library[0] = new Book("The Great Gatsby", "F. Scott Fitzgerald", 1925);
        library[1] = new Book("To Kill a Mockingbird", "Harper Lee", 1960);
        library[2] = new Book("1984", "George Orwell", 1949);

        // Print out the title, author, and year of each book in the library
        for (Book book : library) {
            System.out.println("Title: " + book.getTitle() + "\nAuthor: " + book.getAuthor() + "\nYear: " + book.getYear() + "\n");
        }
    }
}

在这个例子中，我们定义了一个Book类，每个Book对象都有一个标题、作者和出版年份。我们创建了一个Book对象数组，library，其中包含三本书。我们使用new关键字实例化了每个Book对象并将它们存储在数组中。

然后我们循环遍历library数组，并使用getTitle()、getAuthor()和getYear()方法打印出每本书的标题、作者和出版年份。

另一个Java面向对象示例，其中包含一个对象数组和一些对象方法：

class Person {
    String name;
    int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public void sayHello() {
        System.out.println("Hello, my name is " + name + ".");
    }

    public void celebrateBirthday() {
        age++;
        System.out.println(name + " is now " + age + " years old.");
    }
}

public class Example {
    public static void main(String[] args) {
        Person[] family = new Person[3];
        family[0] = new Person("John", 30);
        family[1] = new Person("Jane", 25);
        family[2] = new Person("Jim", 10);

        // Say hello to each family member
        for (Person person : family) {
            person.sayHello();
        }

        // Celebrate everyone's birthday
        for (Person person : family) {
            person.celebrateBirthday();
        }
    }
}

在这个例子中，我们定义了一个Person类，每个Person对象都有一个名字和年龄。我们创建了一个Person对象数组，family，其中包含三个人。我们使用new关键字实例化了每个Person对象并将它们存储在数组中。

然后我们循环遍历family数组，并使用sayHello()方法向每个家庭成员打招呼。接着我们循环遍历family数组，并使用celebrateBirthday()方法庆祝每个人的生日。celebrateBirthday()方法会将年龄增加1，并打印出新的年龄。

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原文链接：codingdict.net

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