java 对象数组定义

下面代码实现了定义一个数组对象

public class Student {

    private String username;
    private int num;

    public Student(String username, int num) {
        this.username = username;
        this.num = num;
    }

    public static void main(String[] args) {
        Student s[] = new Student[10];
        for (int i = 0; i < s.length; i++) {
            s[i] = new Student(i + "", i);
            System.out.println(s[i]);
        }

    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }

    @Override
    public String toString() {
        return this.num + " " + this.username;
    }

}

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