[置顶] 判断两个日期是否超过24小时!

public class Test {

	public static void main(String[] args) {
		String date1="2013-06-24 12:30:30"; //
		String date2="2013-06-26 12:30:31";  
		try {
		 if(jisuan(date1,date2)){
			 System.out.println("可用"); 
			 
		 }else{
			 System.out.println("已过期");
		 }
		} catch (Exception e) {
			// TODO: handle exception
		}
	}
	
	//判断是否超过24小时
	public static boolean jisuan(String date1, String date2) throws Exception {
		java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-M-d HH:mm:ss");
		java.util.Date start = sdf.parse(date1);
		java.util.Date end = sdf.parse(date2);
		long cha = end.getTime() - start.getTime();
		double result = cha * 1.0 / (1000 * 60 * 60);
		if(result<=24){
			 //System.out.println("可用"); 
			 return true;
		}else{
			 //System.out.println("已过期");
			 return false;
		}
	}
	
}