怎末运行不出来？

[bbs0422]

public class TestData1{
public static void main(String [] args){
Data[] days=new Data[3];
//int day[]={0,1,2,3,4};
days[0]=new Data(2004,1,4);
days[1]=new Data(2004,2,5);
days[2]=new Data(2004,3,6);
Sort(days);
for(int i=0;i<days.length;i++){
System.out.println(days[i]+" ");
}
}
class Data{
int day;
int month;
int year;
Data(int d,int m,int y){
day=d;
month=m;
year=y;
}
public Data[] Sort(Data[] days){
for(int i=0;i<days.length;i++){
for(int j=i+1;j<days.length;j++){
if(days[i].compare(days[j])<0){
Data temp=days[i];
days[i]=days[j];
days[j]=temp;
}
}
}
return days;
}
}
}

[healer_kx]

接分，不知道，看着很好。

[haoxiongok]

Sort？干啥用？

[Lt_smile]

导入util.*
Arrays.sort(days);

你的Data类没定义compare方法

Data？Date？
这名字起得

[莫情莫钱]

找个编辑器吧,关键字都错了

[约翰羊]

不知道楼主是啥意思,凑合改了改.供楼主参考吧.

public class TestData1{ 
	public static void main(String [] args){ 
		Data[] days=new Data[6]; 
		Data[] newDays;	
		days[0]=new Data(2,4,2004); 
		days[1]=new Data(1,7,2003); 
		days[2]=new Data(3,6,2005); 
		days[3]=new Data(3,3,2005); 
		days[4]=new Data(3,9,2005); 
		days[5]=new Data(2,4,2004); 		
		newDays = new TestData1().sort(days); 
		for(int i=0;i <days.length;i++){ 
			System.out.println(newDays[i].toString()); 
		}
	} 
	
		public  Data[] sort(Data[] days){ 
		for(int i=0;i <days.length;i++){ 
			for(int j=i+1;j <days.length;j++){ 
				if(days[i].compare(days[j]) <0){ 
					Data temp=days[i]; 
					days[i]=days[j]; 
					days[j]=temp; 
				} 
			} 
		} 
		return days; 
	} 
}
class Data{ 
	Integer day; 
	Integer month; 
	Integer year; 
	Data(int d,int m,int y){ 
		day=d; 
		month=m; 
		year=y; 
	} 
	public String toString(){
		return year+"-"+month+"-"+day;
	}
	public int compare(Data d){
		if (year-d.year!=0){
			return year - d.year;
		}else 
			if(month -d.month!=0){
				return month-d.month;
			}else
				if (day - d.day!=0){
					return day - d.day;
				}else{
					return 0;
				}
	}
}