java之比较两个日期大小

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
* 比较日期大小
*/
public class TestDateCompare {

static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //设置日期格式

public static void main(String[] args) throws ParseException {
Date startDate = sdf.parse("2016-04-15 11:11:11");
Date endDate = sdf.parse("2016-04-16 11:11:11");

if(startDate.before(endDate)){
System.out.println("startDate小于endDate");
}else if(startDate.after(endDate)){
System.out.println("startDate大于endDate");
}else{
System.out.println("startDate等于endDate");
}

if(endDate.after(startDate)){
System.out.println("endDate大于startDate");
}

System.out.println(startDate.compareTo(endDate));
System.out.println(endDate.compareTo(startDate));
System.out.println(endDate.compareTo(endDate));
}
}