为了更好地理解 Arrays.sort() 方法的使用，下面我们通过几个示例代码来展示不同场景下的应用。

示例一：对整型数组排序

import java.util.Arrays;

public class SortExample {
    public static void main(String[] args) {
        int[] array = {5, 2, 8, 1, 9, 3};
        Arrays.sort(array);
        System.out.println("Sorted array: " + Arrays.toString(array));
    }
}

输出：

Sorted array: [1, 2, 3, 5, 8, 9]

示例二：对字符串数组排序

import java.util.Arrays;

public class SortExample {
    public static void main(String[] args) {
        String[] array = {"banana", "apple", "orange", "grape"};
        Arrays.sort(array);
        System.out.println("Sorted array: " + Arrays.toString(array));
    }
}

输出：

Sorted array: [apple, banana, grape, orange]

示例三：对自定义对象数组排序

import java.util.Arrays;

class Person implements Comparable<Person> {
    private String name;
    private int age;

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

    @Override
    public int compareTo(Person other) {
        return this.age - other.age;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

public class SortExample {
    public static void main(String[] args) {
        Person[] people = {
                new Person("Alice", 30),
                new Person("Bob", 25),
                new Person("Charlie", 35)
        };

        Arrays.sort(people);

        System.out.println("Sorted array: " + Arrays.toString(people));
    }
}

输出：

Sorted array: [Person{name='Bob', age=25}, Person{name='Alice', age=30}, Person{name='Charlie', age=35}]