如何 输出

怎么 输出
package yuhh;

import java.util.Arrays;

class Date{
public int year;
public int month;
public int day;
Date(int y,int m,int d){
year = y;
month = m;
day = d;
}
}
public class ret {
  public static void main(String[] args){
  Date[] D;
  D = new Date[3];
  for(int i=0;i<3;i++){
  D[i] = new Date(2004,4,i+1);
  System.out.println(Arrays.toString(D));
  }
  }
}


------解决方案--------------------
楼主想输出什么？格式化的日期？
------解决方案--------------------
[2004 4 1, null, null]
[2004 4 1, 2004 4 2, null]
[2004 4 1, 2004 4 2, 2004 4 3]


楼主是想要这样的结果吗
------解决方案--------------------
楼主是这样吗？？
class Date {
public int year;
public int month;
public int day;

Date(int y, int m, int d) {
year = y;
month = m;
day = d;
}

public String toString() {

return year + " " + month + " " + day;

}
}