//比较器

class Student2 implements Comparable<Student2>{

	private int strno;

	private String name;

	private int age;

	private float score;

	public Student2(int strno, String name, int age, float score) {

		this.strno = strno;

		this.name = name;

		this.age = age;

		this.score = score;

	}

	@Override

	public String toString() {

		// TODO 自动生成的方法存根

		return "学号："+this.strno+",姓名："+this.name+",年龄："+this.age+",成绩："+this.score;

	}

	@Override

	public int compareTo(Student2 stu) {

		// TODO 自动生成的方法存根

		if(this.score > stu.score)

		{

			return 1;

		}else if(this.score < stu.score){

			return -1;

		}else{

			return 0;

		}

	}

}

public class CompareDemo {

	public static void main(String args[])

	{

		Student2 stu[] = {new Student2(1,"张三",20,98.13f),

				new Student2(2,"李四",33,88.18f),

				new Student2(3,"王五",41,80.32f),

				new Student2(4,"赵六",28,89.77f),

				new Student2(5,"田七",25,90.53f)};

		//排序

				System.out.println("++++++++++++数组排序前+++++++++++++++");

				print(stu);

				System.out.println("++++++++++++数组排序后+++++++++++++++");

				Arrays.sort(stu);

				print(stu);

	}

	public static void print(Student2 stu[])

	{

		for(int i=0;i<stu.length; i++)

		{

			System.out.println(stu[i]);

		}

	}

}