defaultpiedataset.html

jfreechart1。0。2的api。

<FONT color="green">187</FONT>         * Sets the data value for a key and sends a {@link DatasetChangeEvent} to<a name="line.187"></a>
<FONT color="green">188</FONT>         * all registered listeners.<a name="line.188"></a>
<FONT color="green">189</FONT>         *<a name="line.189"></a>
<FONT color="green">190</FONT>         * @param key  the key (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.190"></a>
<FONT color="green">191</FONT>         * @param value  the value.<a name="line.191"></a>
<FONT color="green">192</FONT>         * <a name="line.192"></a>
<FONT color="green">193</FONT>         * @throws IllegalArgumentException if &lt;code&gt;key&lt;/code&gt; is <a name="line.193"></a>
<FONT color="green">194</FONT>         *     &lt;code&gt;null&lt;/code&gt;.<a name="line.194"></a>
<FONT color="green">195</FONT>         */<a name="line.195"></a>
<FONT color="green">196</FONT>        public void setValue(Comparable key, Number value) {<a name="line.196"></a>
<FONT color="green">197</FONT>            this.data.setValue(key, value);<a name="line.197"></a>
<FONT color="green">198</FONT>            fireDatasetChanged();<a name="line.198"></a>
<FONT color="green">199</FONT>        }<a name="line.199"></a>
<FONT color="green">200</FONT>    <a name="line.200"></a>
<FONT color="green">201</FONT>        /**<a name="line.201"></a>
<FONT color="green">202</FONT>         * Sets the data value for a key and sends a {@link DatasetChangeEvent} to<a name="line.202"></a>
<FONT color="green">203</FONT>         * all registered listeners.<a name="line.203"></a>
<FONT color="green">204</FONT>         *<a name="line.204"></a>
<FONT color="green">205</FONT>         * @param key  the key (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.205"></a>
<FONT color="green">206</FONT>         * @param value  the value.<a name="line.206"></a>
<FONT color="green">207</FONT>         * <a name="line.207"></a>
<FONT color="green">208</FONT>         * @throws IllegalArgumentException if &lt;code&gt;key&lt;/code&gt; is <a name="line.208"></a>
<FONT color="green">209</FONT>         *     &lt;code&gt;null&lt;/code&gt;.<a name="line.209"></a>
<FONT color="green">210</FONT>         */<a name="line.210"></a>
<FONT color="green">211</FONT>        public void setValue(Comparable key, double value) {<a name="line.211"></a>
<FONT color="green">212</FONT>            setValue(key, new Double(value));<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>        /**<a name="line.215"></a>
<FONT color="green">216</FONT>         * Removes an item from the dataset and sends a {@link DatasetChangeEvent}<a name="line.216"></a>
<FONT color="green">217</FONT>         * to all registered listeners.<a name="line.217"></a>
<FONT color="green">218</FONT>         * <a name="line.218"></a>
<FONT color="green">219</FONT>         * @param key  the key (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.219"></a>
<FONT color="green">220</FONT>         * <a name="line.220"></a>
<FONT color="green">221</FONT>         * @throws IllegalArgumentException if &lt;code&gt;key&lt;/code&gt; is <a name="line.221"></a>
<FONT color="green">222</FONT>         *     &lt;code&gt;null&lt;/code&gt;.<a name="line.222"></a>
<FONT color="green">223</FONT>         */<a name="line.223"></a>
<FONT color="green">224</FONT>        public void remove(Comparable key) {<a name="line.224"></a>
<FONT color="green">225</FONT>            this.data.removeValue(key);   <a name="line.225"></a>
<FONT color="green">226</FONT>            fireDatasetChanged();<a name="line.226"></a>
<FONT color="green">227</FONT>        }<a name="line.227"></a>
<FONT color="green">228</FONT>        <a name="line.228"></a>
<FONT color="green">229</FONT>        /**<a name="line.229"></a>
<FONT color="green">230</FONT>         * Clears all data from this dataset and sends a {@link DatasetChangeEvent}<a name="line.230"></a>
<FONT color="green">231</FONT>         * to all registered listeners (unless the dataset was already empty).<a name="line.231"></a>
<FONT color="green">232</FONT>         * <a name="line.232"></a>
<FONT color="green">233</FONT>         * @since 1.0.2<a name="line.233"></a>
<FONT color="green">234</FONT>         */<a name="line.234"></a>
<FONT color="green">235</FONT>        public void clear() {<a name="line.235"></a>
<FONT color="green">236</FONT>            if (getItemCount() &gt; 0) {<a name="line.236"></a>
<FONT color="green">237</FONT>                this.data.clear();<a name="line.237"></a>
<FONT color="green">238</FONT>                fireDatasetChanged();<a name="line.238"></a>
<FONT color="green">239</FONT>            }<a name="line.239"></a>
<FONT color="green">240</FONT>        }<a name="line.240"></a>
<FONT color="green">241</FONT>    <a name="line.241"></a>
<FONT color="green">242</FONT>        /**<a name="line.242"></a>
<FONT color="green">243</FONT>         * Tests if this object is equal to another.<a name="line.243"></a>
<FONT color="green">244</FONT>         *<a name="line.244"></a>
<FONT color="green">245</FONT>         * @param obj  the other object.<a name="line.245"></a>
<FONT color="green">246</FONT>         *<a name="line.246"></a>
<FONT color="green">247</FONT>         * @return A boolean.<a name="line.247"></a>
<FONT color="green">248</FONT>         */<a name="line.248"></a>
<FONT color="green">249</FONT>        public boolean equals(Object obj) {<a name="line.249"></a>
<FONT color="green">250</FONT>            if (obj == this) {<a name="line.250"></a>
<FONT color="green">251</FONT>                return true;<a name="line.251"></a>
<FONT color="green">252</FONT>            }<a name="line.252"></a>
<FONT color="green">253</FONT>    <a name="line.253"></a>
<FONT color="green">254</FONT>            if (!(obj instanceof PieDataset)) {<a name="line.254"></a>
<FONT color="green">255</FONT>                return false;<a name="line.255"></a>
<FONT color="green">256</FONT>            }<a name="line.256"></a>
<FONT color="green">257</FONT>            PieDataset that = (PieDataset) obj;<a name="line.257"></a>
<FONT color="green">258</FONT>            int count = getItemCount();<a name="line.258"></a>
<FONT color="green">259</FONT>            if (that.getItemCount() != count) {<a name="line.259"></a>
<FONT color="green">260</FONT>                return false;<a name="line.260"></a>
<FONT color="green">261</FONT>            }<a name="line.261"></a>
<FONT color="green">262</FONT>    <a name="line.262"></a>
<FONT color="green">263</FONT>            for (int i = 0; i &lt; count; i++) {<a name="line.263"></a>
<FONT color="green">264</FONT>                Comparable k1 = getKey(i);<a name="line.264"></a>
<FONT color="green">265</FONT>                Comparable k2 = that.getKey(i);<a name="line.265"></a>
<FONT color="green">266</FONT>                if (!k1.equals(k2)) {<a name="line.266"></a>
<FONT color="green">267</FONT>                    return false;<a name="line.267"></a>
<FONT color="green">268</FONT>                }<a name="line.268"></a>
<FONT color="green">269</FONT>    <a name="line.269"></a>
<FONT color="green">270</FONT>                Number v1 = getValue(i);<a name="line.270"></a>
<FONT color="green">271</FONT>                Number v2 = that.getValue(i);<a name="line.271"></a>
<FONT color="green">272</FONT>                if (v1 == null) {<a name="line.272"></a>
<FONT color="green">273</FONT>                    if (v2 != null) {<a name="line.273"></a>
<FONT color="green">274</FONT>                        return false;<a name="line.274"></a>
<FONT color="green">275</FONT>                    }<a name="line.275"></a>
<FONT color="green">276</FONT>                }<a name="line.276"></a>
<FONT color="green">277</FONT>                else {<a name="line.277"></a>
<FONT color="green">278</FONT>                    if (!v1.equals(v2)) {<a name="line.278"></a>
<FONT color="green">279</FONT>                        return false;<a name="line.279"></a>
<FONT color="green">280</FONT>                    }<a name="line.280"></a>
<FONT color="green">281</FONT>                }<a name="line.281"></a>
<FONT color="green">282</FONT>            }<a name="line.282"></a>
<FONT color="green">283</FONT>            return true;<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>    <a name="line.286"></a>
<FONT color="green">287</FONT>        /**<a name="line.287"></a>
<FONT color="green">288</FONT>         * Returns a hash code.<a name="line.288"></a>
<FONT color="green">289</FONT>         * <a name="line.289"></a>
<FONT color="green">290</FONT>         * @return A hash code.<a name="line.290"></a>
<FONT color="green">291</FONT>         */<a name="line.291"></a>
<FONT color="green">292</FONT>        public int hashCode() {<a name="line.292"></a>
<FONT color="green">293</FONT>            return this.data.hashCode();<a name="line.293"></a>
<FONT color="green">294</FONT>        }<a name="line.294"></a>
<FONT color="green">295</FONT>    <a name="line.295"></a>
<FONT color="green">296</FONT>        /**<a name="line.296"></a>
<FONT color="green">297</FONT>         * Returns a clone of the dataset.<a name="line.297"></a>
<FONT color="green">298</FONT>         * <a name="line.298"></a>
<FONT color="green">299</FONT>         * @return A clone.<a name="line.299"></a>
<FONT color="green">300</FONT>         * <a name="line.300"></a>
<FONT color="green">301</FONT>         * @throws CloneNotSupportedException This class will not throw this <a name="line.301"></a>
<FONT color="green">302</FONT>         *         exception, but subclasses (if any) might.<a name="line.302"></a>
<FONT color="green">303</FONT>         */<a name="line.303"></a>
<FONT color="green">304</FONT>        public Object clone() throws CloneNotSupportedException {<a name="line.304"></a>
<FONT color="green">305</FONT>            DefaultPieDataset clone = (DefaultPieDataset) super.clone();<a name="line.305"></a>
<FONT color="green">306</FONT>            clone.data = (DefaultKeyedValues) this.data.clone();<a name="line.306"></a>
<FONT color="green">307</FONT>            return clone;    <a name="line.307"></a>
<FONT color="green">308</FONT>        }<a name="line.308"></a>
<FONT color="green">309</FONT>        <a name="line.309"></a>
<FONT color="green">310</FONT>    }<a name="line.310"></a>




























































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