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SPL(Structured Process Language) A programming language specially for structured data computing.

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package com.scudata.common;

import java.sql.Date;
import java.util.Calendar;

final public class DateCache {
	// 1992??֮ǰ?е????ڲ??ܱ?86400000????
	// ?????2000/1/1??2030/12/31֮???????
	private static final int DATECOUNT = 11323;
	private static final Date []dates = new Date[DATECOUNT];
	static final long BASEDATE; // 2000/1/1??Ӧ??????ֵ
	static {
		Calendar calendar = Calendar.getInstance();
		calendar.set(2000, java.util.Calendar.JANUARY, 1, 0, 0, 0);
		calendar.set(java.util.Calendar.MILLISECOND, 0);
		BASEDATE = calendar.getTimeInMillis();
		
		for (int i = 0, len = dates.length; i < len; ++i) {
			dates[i] = new java.sql.Date(BASEDATE + i * 86400000L);
		}
	}
	
	public static Date getDate(int i) {
		if (i < DATECOUNT) {
			return dates[i];
		} else {
			return new java.sql.Date(BASEDATE + i * 86400000L);
		}
	}
}