week.html

jfreechart1。0。2的api。

<FONT color="green">155</FONT>            if (time == null) {<a name="line.155"></a>
<FONT color="green">156</FONT>                throw new IllegalArgumentException("Null 'time' argument.");   <a name="line.156"></a>
<FONT color="green">157</FONT>            }<a name="line.157"></a>
<FONT color="green">158</FONT>            if (zone == null) {<a name="line.158"></a>
<FONT color="green">159</FONT>                throw new IllegalArgumentException("Null 'zone' argument.");   <a name="line.159"></a>
<FONT color="green">160</FONT>            }<a name="line.160"></a>
<FONT color="green">161</FONT>            Calendar calendar = Calendar.getInstance(zone);<a name="line.161"></a>
<FONT color="green">162</FONT>            calendar.setTime(time);<a name="line.162"></a>
<FONT color="green">163</FONT>    <a name="line.163"></a>
<FONT color="green">164</FONT>            // sometimes the last few days of the year are considered to fall in <a name="line.164"></a>
<FONT color="green">165</FONT>            // the *first* week of the following year.  Refer to the Javadocs for <a name="line.165"></a>
<FONT color="green">166</FONT>            // GregorianCalendar.<a name="line.166"></a>
<FONT color="green">167</FONT>            int tempWeek = calendar.get(Calendar.WEEK_OF_YEAR);<a name="line.167"></a>
<FONT color="green">168</FONT>            if (tempWeek == 1 <a name="line.168"></a>
<FONT color="green">169</FONT>                    &amp;&amp; calendar.get(Calendar.MONTH) == Calendar.DECEMBER) {<a name="line.169"></a>
<FONT color="green">170</FONT>                this.week = 1;<a name="line.170"></a>
<FONT color="green">171</FONT>                this.year =  new Year(calendar.get(Calendar.YEAR) + 1);<a name="line.171"></a>
<FONT color="green">172</FONT>            }<a name="line.172"></a>
<FONT color="green">173</FONT>            else {<a name="line.173"></a>
<FONT color="green">174</FONT>                this.week = Math.min(tempWeek, LAST_WEEK_IN_YEAR);<a name="line.174"></a>
<FONT color="green">175</FONT>                int yyyy = calendar.get(Calendar.YEAR);<a name="line.175"></a>
<FONT color="green">176</FONT>                // alternatively, sometimes the first few days of the year are<a name="line.176"></a>
<FONT color="green">177</FONT>                // considered to fall in the *last* week of the previous year...<a name="line.177"></a>
<FONT color="green">178</FONT>                if (calendar.get(Calendar.MONTH) == Calendar.JANUARY <a name="line.178"></a>
<FONT color="green">179</FONT>                        &amp;&amp; this.week &gt;= 52) {<a name="line.179"></a>
<FONT color="green">180</FONT>                    yyyy--; <a name="line.180"></a>
<FONT color="green">181</FONT>                }<a name="line.181"></a>
<FONT color="green">182</FONT>                this.year = new Year(yyyy);<a name="line.182"></a>
<FONT color="green">183</FONT>            }<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>        }<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>        /**<a name="line.187"></a>
<FONT color="green">188</FONT>         * Returns the year in which the week falls.<a name="line.188"></a>
<FONT color="green">189</FONT>         *<a name="line.189"></a>
<FONT color="green">190</FONT>         * @return The year (never &lt;code&gt;null&lt;/code&gt;).<a name="line.190"></a>
<FONT color="green">191</FONT>         */<a name="line.191"></a>
<FONT color="green">192</FONT>        public Year getYear() {<a name="line.192"></a>
<FONT color="green">193</FONT>            return this.year;<a name="line.193"></a>
<FONT color="green">194</FONT>        }<a name="line.194"></a>
<FONT color="green">195</FONT>    <a name="line.195"></a>
<FONT color="green">196</FONT>        /**<a name="line.196"></a>
<FONT color="green">197</FONT>         * Returns the year in which the week falls, as an integer value.<a name="line.197"></a>
<FONT color="green">198</FONT>         *<a name="line.198"></a>
<FONT color="green">199</FONT>         * @return The year.<a name="line.199"></a>
<FONT color="green">200</FONT>         */<a name="line.200"></a>
<FONT color="green">201</FONT>        public int getYearValue() {<a name="line.201"></a>
<FONT color="green">202</FONT>            return this.year.getYear();<a name="line.202"></a>
<FONT color="green">203</FONT>        }<a name="line.203"></a>
<FONT color="green">204</FONT>    <a name="line.204"></a>
<FONT color="green">205</FONT>        /**<a name="line.205"></a>
<FONT color="green">206</FONT>         * Returns the week.<a name="line.206"></a>
<FONT color="green">207</FONT>         *<a name="line.207"></a>
<FONT color="green">208</FONT>         * @return The week.<a name="line.208"></a>
<FONT color="green">209</FONT>         */<a name="line.209"></a>
<FONT color="green">210</FONT>        public int getWeek() {<a name="line.210"></a>
<FONT color="green">211</FONT>            return this.week;<a name="line.211"></a>
<FONT color="green">212</FONT>        }<a name="line.212"></a>
<FONT color="green">213</FONT>    <a name="line.213"></a>
<FONT color="green">214</FONT>        /**<a name="line.214"></a>
<FONT color="green">215</FONT>         * Returns the week preceding this one.  This method will return <a name="line.215"></a>
<FONT color="green">216</FONT>         * &lt;code&gt;null&lt;/code&gt; for some lower limit on the range of weeks (currently <a name="line.216"></a>
<FONT color="green">217</FONT>         * week 1, 1900).  For week 1 of any year, the previous week is always week <a name="line.217"></a>
<FONT color="green">218</FONT>         * 53, but week 53 may not contain any days (you should check for this).<a name="line.218"></a>
<FONT color="green">219</FONT>         *<a name="line.219"></a>
<FONT color="green">220</FONT>         * @return The preceding week (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.220"></a>
<FONT color="green">221</FONT>         */<a name="line.221"></a>
<FONT color="green">222</FONT>        public RegularTimePeriod previous() {<a name="line.222"></a>
<FONT color="green">223</FONT>    <a name="line.223"></a>
<FONT color="green">224</FONT>            Week result;<a name="line.224"></a>
<FONT color="green">225</FONT>            if (this.week != FIRST_WEEK_IN_YEAR) {<a name="line.225"></a>
<FONT color="green">226</FONT>                result = new Week(this.week - 1, this.year);<a name="line.226"></a>
<FONT color="green">227</FONT>            }<a name="line.227"></a>
<FONT color="green">228</FONT>            else {<a name="line.228"></a>
<FONT color="green">229</FONT>                // we need to work out if the previous year has 52 or 53 weeks...<a name="line.229"></a>
<FONT color="green">230</FONT>                Year prevYear = (Year) this.year.previous();<a name="line.230"></a>
<FONT color="green">231</FONT>                if (prevYear != null) {<a name="line.231"></a>
<FONT color="green">232</FONT>                    int yy = prevYear.getYear();<a name="line.232"></a>
<FONT color="green">233</FONT>                    Calendar prevYearCalendar = Calendar.getInstance();<a name="line.233"></a>
<FONT color="green">234</FONT>                    prevYearCalendar.set(yy, Calendar.DECEMBER, 31);<a name="line.234"></a>
<FONT color="green">235</FONT>                    result = new Week(<a name="line.235"></a>
<FONT color="green">236</FONT>                        prevYearCalendar.getActualMaximum(Calendar.WEEK_OF_YEAR), <a name="line.236"></a>
<FONT color="green">237</FONT>                        prevYear<a name="line.237"></a>
<FONT color="green">238</FONT>                    );<a name="line.238"></a>
<FONT color="green">239</FONT>                }<a name="line.239"></a>
<FONT color="green">240</FONT>                else {<a name="line.240"></a>
<FONT color="green">241</FONT>                    result = null;<a name="line.241"></a>
<FONT color="green">242</FONT>                }<a name="line.242"></a>
<FONT color="green">243</FONT>            }<a name="line.243"></a>
<FONT color="green">244</FONT>            return result;<a name="line.244"></a>
<FONT color="green">245</FONT>    <a name="line.245"></a>
<FONT color="green">246</FONT>        }<a name="line.246"></a>
<FONT color="green">247</FONT>    <a name="line.247"></a>
<FONT color="green">248</FONT>        /**<a name="line.248"></a>
<FONT color="green">249</FONT>         * Returns the week following this one.  This method will return <a name="line.249"></a>
<FONT color="green">250</FONT>         * &lt;code&gt;null&lt;/code&gt; for some upper limit on the range of weeks (currently <a name="line.250"></a>
<FONT color="green">251</FONT>         * week 53, 9999).  For week 52 of any year, the following week is always <a name="line.251"></a>
<FONT color="green">252</FONT>         * week 53, but week 53 may not contain any days (you should check for <a name="line.252"></a>
<FONT color="green">253</FONT>         * this).<a name="line.253"></a>
<FONT color="green">254</FONT>         *<a name="line.254"></a>
<FONT color="green">255</FONT>         * @return The following week (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.255"></a>
<FONT color="green">256</FONT>         */<a name="line.256"></a>
<FONT color="green">257</FONT>        public RegularTimePeriod next() {<a name="line.257"></a>
<FONT color="green">258</FONT>    <a name="line.258"></a>
<FONT color="green">259</FONT>            Week result;<a name="line.259"></a>
<FONT color="green">260</FONT>            if (this.week &lt; 52) {<a name="line.260"></a>
<FONT color="green">261</FONT>                result = new Week(this.week + 1, this.year);<a name="line.261"></a>
<FONT color="green">262</FONT>            }<a name="line.262"></a>
<FONT color="green">263</FONT>            else {<a name="line.263"></a>
<FONT color="green">264</FONT>                Calendar calendar = Calendar.getInstance();<a name="line.264"></a>
<FONT color="green">265</FONT>                calendar.set(this.year.getYear(), Calendar.DECEMBER, 31);<a name="line.265"></a>
<FONT color="green">266</FONT>                int actualMaxWeek <a name="line.266"></a>
<FONT color="green">267</FONT>                    = calendar.getActualMaximum(Calendar.WEEK_OF_YEAR);<a name="line.267"></a>
<FONT color="green">268</FONT>                if (this.week != actualMaxWeek) {<a name="line.268"></a>
<FONT color="green">269</FONT>                    result = new Week(this.week + 1, this.year);<a name="line.269"></a>
<FONT color="green">270</FONT>                }<a name="line.270"></a>
<FONT color="green">271</FONT>                else {<a name="line.271"></a>
<FONT color="green">272</FONT>                    Year nextYear = (Year) this.year.next();<a name="line.272"></a>
<FONT color="green">273</FONT>                    if (nextYear != null) {<a name="line.273"></a>
<FONT color="green">274</FONT>                        result = new Week(FIRST_WEEK_IN_YEAR, nextYear);<a name="line.274"></a>
<FONT color="green">275</FONT>                    }<a name="line.275"></a>
<FONT color="green">276</FONT>                    else {<a name="line.276"></a>
<FONT color="green">277</FONT>                        result = null;<a name="line.277"></a>
<FONT color="green">278</FONT>                    }<a name="line.278"></a>
<FONT color="green">279</FONT>                }<a name="line.279"></a>
<FONT color="green">280</FONT>            }<a name="line.280"></a>
<FONT color="green">281</FONT>            return result;<a name="line.281"></a>
<FONT color="green">282</FONT>    <a name="line.282"></a>
<FONT color="green">283</FONT>        }<a name="line.283"></a>
<FONT color="green">284</FONT>    <a name="line.284"></a>
<FONT color="green">285</FONT>        /**<a name="line.285"></a>
<FONT color="green">286</FONT>         * Returns a serial index number for the week.<a name="line.286"></a>
<FONT color="green">287</FONT>         *<a name="line.287"></a>
<FONT color="green">288</FONT>         * @return The serial index number.<a name="line.288"></a>
<FONT color="green">289</FONT>         */<a name="line.289"></a>
<FONT color="green">290</FONT>        public long getSerialIndex() {<a name="line.290"></a>
<FONT color="green">291</FONT>            return this.year.getYear() * 53L + this.week;<a name="line.291"></a>
<FONT color="green">292</FONT>        }<a name="line.292"></a>
<FONT color="green">293</FONT>    <a name="line.293"></a>
<FONT color="green">294</FONT>        /**<a name="line.294"></a>
<FONT color="green">295</FONT>         * Returns the first millisecond of the week, evaluated using the supplied<a name="line.295"></a>
<FONT color="green">296</FONT>         * calendar (which determines the time zone).<a name="line.296"></a>
<FONT color="green">297</FONT>         *<a name="line.297"></a>
<FONT color="green">298</FONT>         * @param calendar  the calendar.<a name="line.298"></a>
<FONT color="green">299</FONT>         *<a name="line.299"></a>
<FONT color="green">300</FONT>         * @return The first millisecond of the week.<a name="line.300"></a>
<FONT color="green">301</FONT>         */<a name="line.301"></a>
<FONT color="green">302</FONT>        public long getFirstMillisecond(Calendar calendar) {<a name="line.302"></a>
<FONT color="green">303</FONT>            Calendar c = (Calendar) calendar.clone();<a name="line.303"></a>
<FONT color="green">304</FONT>            c.clear();<a name="line.304"></a>
<FONT color="green">305</FONT>            c.set(Calendar.YEAR, this.year.getYear());<a name="line.305"></a>
<FONT color="green">306</FONT>            c.set(Calendar.WEEK_OF_YEAR, this.week);<a name="line.306"></a>
<FONT color="green">307</FONT>            c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());<a name="line.307"></a>
<FONT color="green">308</FONT>            c.set(Calendar.HOUR, 0);<a name="line.308"></a>
<FONT color="green">309</FONT>            c.set(Calendar.MINUTE, 0);<a name="line.309"></a>
<FONT color="green">310</FONT>            c.set(Calendar.SECOND, 0);<a name="line.310"></a>
<FONT color="green">311</FONT>            c.set(Calendar.MILLISECOND, 0);<a name="line.311"></a>