1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2 <!--NewPage--> 3 <HTML> 4 <HEAD> 5 <!-- Generated by javadoc (build 1.6.0-google-internal) on Mon Jan 04 20:48:00 PST 2010 --> 6 <TITLE> 7 Longs (Guava Libraries 2010.01.04) 8 </TITLE> 9 10 <META NAME="date" CONTENT="2010-01-04"> 11 12 <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"> 13 14 <SCRIPT type="text/javascript"> 15 function windowTitle() 16 { 17 if (location.href.indexOf('is-external=true') == -1) { 18 parent.document.title="Longs (Guava Libraries 2010.01.04)"; 19 } 20 } 21 </SCRIPT> 22 <NOSCRIPT> 23 </NOSCRIPT> 24 25 </HEAD> 26 27 <BODY BGCOLOR="white" onload="windowTitle();"> 28 <HR> 29 30 31 <!-- ========= START OF TOP NAVBAR ======= --> 32 <A NAME="navbar_top"><!-- --></A> 33 <A HREF="#skip-navbar_top" title="Skip navigation links"></A> 34 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 35 <TR> 36 <TD 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if(window==top) { 66 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 67 } 68 //--> 69 </SCRIPT> 70 <NOSCRIPT> 71 <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> 72 </NOSCRIPT> 73 74 75 </FONT></TD> 76 </TR> 77 <TR> 78 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 79 SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 80 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 81 DETAIL: <A HREF="#field_detail">FIELD</A> | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 82 </TR> 83 </TABLE> 84 <A NAME="skip-navbar_top"></A> 85 <!-- ========= END OF TOP NAVBAR ========= --> 86 87 <HR> 88 <!-- ======== START OF CLASS DATA ======== --> 89 <H2> 90 <FONT SIZE="-1"> 91 com.google.common.primitives</FONT> 92 <BR> 93 Class Longs</H2> 94 <PRE> 95 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> 96 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.google.common.primitives.Longs</B> 97 </PRE> 98 <HR> 99 <DL> 100 <DT><PRE>public final class <B>Longs</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL> 101 </PRE> 102 103 <P> 104 Static utility methods pertaining to <code>long</code> primitives, that are not 105 already found in either <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang"><CODE>Long</CODE></A> or <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Arrays.html?is-external=true" title="class or interface in java.util"><CODE>Arrays</CODE></A>. 106 <P> 107 108 <P> 109 <DL> 110 <DT><B>Since:</B></DT> 111 <DD>2009.09.15 <b>tentative</b></DD> 112 <DT><B>Author:</B></DT> 113 <DD>Kevin Bourrillion</DD> 114 </DL> 115 <HR> 116 117 <P> 118 <!-- =========== FIELD SUMMARY =========== --> 119 120 <A NAME="field_summary"><!-- --></A> 121 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 122 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 123 <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 124 <B>Field Summary</B></FONT></TH> 125 </TR> 126 <TR BGCOLOR="white" CLASS="TableRowColor"> 127 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 128 <CODE>static int</CODE></FONT></TD> 129 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#BYTES">BYTES</A></B></CODE> 130 131 <BR> 132 The number of bytes required to represent a primitive <code>long</code> 133 value.</TD> 134 </TR> 135 </TABLE> 136 137 <!-- ========== METHOD SUMMARY =========== --> 138 139 <A NAME="method_summary"><!-- --></A> 140 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 141 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 142 <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 143 <B>Method Summary</B></FONT></TH> 144 </TR> 145 <TR BGCOLOR="white" CLASS="TableRowColor"> 146 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 147 <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</A>></CODE></FONT></TD> 148 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#asList(long...)">asList</A></B>(long... backingArray)</CODE> 149 150 <BR> 151 Returns a fixed-size list backed by the specified array, similar to <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Arrays.html?is-external=true#asList(T...)" title="class or interface in java.util"><CODE>Arrays.asList(Object[])</CODE></A>.</TD> 152 </TR> 153 <TR BGCOLOR="white" CLASS="TableRowColor"> 154 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 155 <CODE>static int</CODE></FONT></TD> 156 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#compare(long, long)">compare</A></B>(long a, 157 long b)</CODE> 158 159 <BR> 160 Compares the two specified <code>long</code> values.</TD> 161 </TR> 162 <TR BGCOLOR="white" CLASS="TableRowColor"> 163 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 164 <CODE>static long[]</CODE></FONT></TD> 165 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#concat(long[]...)">concat</A></B>(long[]... arrays)</CODE> 166 167 <BR> 168 Returns the values from each provided array combined into a single array.</TD> 169 </TR> 170 <TR BGCOLOR="white" CLASS="TableRowColor"> 171 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 172 <CODE>static boolean</CODE></FONT></TD> 173 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#contains(long[], long)">contains</A></B>(long[] array, 174 long target)</CODE> 175 176 <BR> 177 Returns <code>true</code> if <code>target</code> is present as an element anywhere in 178 <code>array</code>.</TD> 179 </TR> 180 <TR BGCOLOR="white" CLASS="TableRowColor"> 181 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 182 <CODE>static long[]</CODE></FONT></TD> 183 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#ensureCapacity(long[], int, int)">ensureCapacity</A></B>(long[] array, 184 int minLength, 185 int padding)</CODE> 186 187 <BR> 188 Returns an array containing the same values as <code>array</code>, but 189 guaranteed to be of a specified minimum length.</TD> 190 </TR> 191 <TR BGCOLOR="white" CLASS="TableRowColor"> 192 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 193 <CODE>static long</CODE></FONT></TD> 194 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#fromByteArray(byte[])">fromByteArray</A></B>(byte[] bytes)</CODE> 195 196 <BR> 197 Returns the <code>long</code> value whose big-endian representation is 198 stored in the first 8 bytes of <code>bytes</code>; equivalent to <code>ByteBuffer.wrap(bytes).getLong()</code>.</TD> 199 </TR> 200 <TR BGCOLOR="white" CLASS="TableRowColor"> 201 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 202 <CODE>static int</CODE></FONT></TD> 203 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#hashCode(long)">hashCode</A></B>(long value)</CODE> 204 205 <BR> 206 Returns a hash code for <code>value</code>; equal to the result of invoking 207 <code>((Long) value).hashCode()</code>.</TD> 208 </TR> 209 <TR BGCOLOR="white" CLASS="TableRowColor"> 210 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 211 <CODE>static int</CODE></FONT></TD> 212 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#indexOf(long[], long)">indexOf</A></B>(long[] array, 213 long target)</CODE> 214 215 <BR> 216 Returns the index of the first appearance of the value <code>target</code> in 217 <code>array</code>.</TD> 218 </TR> 219 <TR BGCOLOR="white" CLASS="TableRowColor"> 220 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 221 <CODE>static int</CODE></FONT></TD> 222 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#indexOf(long[], long[])">indexOf</A></B>(long[] array, 223 long[] target)</CODE> 224 225 <BR> 226 Returns the start position of the first occurrence of the specified <code>target</code> within <code>array</code>, or <code>-1</code> if there is no such occurrence.</TD> 227 </TR> 228 <TR BGCOLOR="white" CLASS="TableRowColor"> 229 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 230 <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> 231 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#join(java.lang.String, long...)">join</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> separator, 232 long... array)</CODE> 233 234 <BR> 235 Returns a string containing the supplied <code>long</code> values separated 236 by <code>separator</code>.</TD> 237 </TR> 238 <TR BGCOLOR="white" CLASS="TableRowColor"> 239 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 240 <CODE>static int</CODE></FONT></TD> 241 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#lastIndexOf(long[], long)">lastIndexOf</A></B>(long[] array, 242 long target)</CODE> 243 244 <BR> 245 Returns the index of the last appearance of the value <code>target</code> in 246 <code>array</code>.</TD> 247 </TR> 248 <TR BGCOLOR="white" CLASS="TableRowColor"> 249 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 250 <CODE>static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A><long[]></CODE></FONT></TD> 251 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#lexicographicalComparator()">lexicographicalComparator</A></B>()</CODE> 252 253 <BR> 254 Returns a comparator that compares two <code>long</code> arrays 255 lexicographically.</TD> 256 </TR> 257 <TR BGCOLOR="white" CLASS="TableRowColor"> 258 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 259 <CODE>static long</CODE></FONT></TD> 260 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#max(long...)">max</A></B>(long... array)</CODE> 261 262 <BR> 263 Returns the greatest value present in <code>array</code>.</TD> 264 </TR> 265 <TR BGCOLOR="white" CLASS="TableRowColor"> 266 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 267 <CODE>static long</CODE></FONT></TD> 268 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#min(long...)">min</A></B>(long... array)</CODE> 269 270 <BR> 271 Returns the least value present in <code>array</code>.</TD> 272 </TR> 273 <TR BGCOLOR="white" CLASS="TableRowColor"> 274 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 275 <CODE>static long[]</CODE></FONT></TD> 276 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#toArray(java.util.Collection)">toArray</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</A>> collection)</CODE> 277 278 <BR> 279 Copies a collection of <code>Long</code> instances into a new array of 280 primitive <code>long</code> values.</TD> 281 </TR> 282 <TR BGCOLOR="white" CLASS="TableRowColor"> 283 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 284 <CODE>static byte[]</CODE></FONT></TD> 285 <TD><CODE><B><A HREF="../../../../com/google/common/primitives/Longs.html#toByteArray(long)">toByteArray</A></B>(long value)</CODE> 286 287 <BR> 288 Returns a big-endian representation of <code>value</code> in an 8-element byte 289 array; equivalent to <code>ByteBuffer.allocate(8).putLong(value).array()</code>.</TD> 290 </TR> 291 </TABLE> 292 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 293 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 294 <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 295 <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> 296 </TR> 297 <TR BGCOLOR="white" CLASS="TableRowColor"> 298 <TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 299 </TR> 300 </TABLE> 301 302 <P> 303 304 <!-- ============ FIELD DETAIL =========== --> 305 306 <A NAME="field_detail"><!-- --></A> 307 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 308 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 309 <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 310 <B>Field Detail</B></FONT></TH> 311 </TR> 312 </TABLE> 313 314 <A NAME="BYTES"><!-- --></A><H3> 315 BYTES</H3> 316 <PRE> 317 public static final int <B>BYTES</B></PRE> 318 <DL> 319 <DD>The number of bytes required to represent a primitive <code>long</code> 320 value. 321 <P> 322 <DL> 323 <DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#com.google.common.primitives.Longs.BYTES">Constant Field Values</A></DL> 324 </DL> 325 326 <!-- ============ METHOD DETAIL ========== --> 327 328 <A NAME="method_detail"><!-- --></A> 329 <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 330 <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 331 <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 332 <B>Method Detail</B></FONT></TH> 333 </TR> 334 </TABLE> 335 336 <A NAME="hashCode(long)"><!-- --></A><H3> 337 hashCode</H3> 338 <PRE> 339 public static int <B>hashCode</B>(long value)</PRE> 340 <DL> 341 <DD>Returns a hash code for <code>value</code>; equal to the result of invoking 342 <code>((Long) value).hashCode()</code>. 343 <P> 344 <DD><DL> 345 <DT><B>Parameters:</B><DD><CODE>value</CODE> - a primitive <code>long</code> value 346 <DT><B>Returns:</B><DD>a hash code for the value</DL> 347 </DD> 348 </DL> 349 <HR> 350 351 <A NAME="compare(long, long)"><!-- --></A><H3> 352 compare</H3> 353 <PRE> 354 public static int <B>compare</B>(long a, 355 long b)</PRE> 356 <DL> 357 <DD>Compares the two specified <code>long</code> values. The sign of the value 358 returned is the same as that of <code>((Long) a).compareTo(b)</code>. 359 <P> 360 <DD><DL> 361 <DT><B>Parameters:</B><DD><CODE>a</CODE> - the first <code>long</code> to compare<DD><CODE>b</CODE> - the second <code>long</code> to compare 362 <DT><B>Returns:</B><DD>a negative value if <code>a</code> is less than <code>b</code>; a positive 363 value if <code>a</code> is greater than <code>b</code>; or zero if they are equal</DL> 364 </DD> 365 </DL> 366 <HR> 367 368 <A NAME="contains(long[], long)"><!-- --></A><H3> 369 contains</H3> 370 <PRE> 371 public static boolean <B>contains</B>(long[] array, 372 long target)</PRE> 373 <DL> 374 <DD>Returns <code>true</code> if <code>target</code> is present as an element anywhere in 375 <code>array</code>. 376 <P> 377 <DD><DL> 378 <DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>long</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>long</code> value 379 <DT><B>Returns:</B><DD><code>true</code> if <code>array[i] == target</code> for some value of <code>i</code></DL> 380 </DD> 381 </DL> 382 <HR> 383 384 <A NAME="indexOf(long[], long)"><!-- --></A><H3> 385 indexOf</H3> 386 <PRE> 387 public static int <B>indexOf</B>(long[] array, 388 long target)</PRE> 389 <DL> 390 <DD>Returns the index of the first appearance of the value <code>target</code> in 391 <code>array</code>. 392 <P> 393 <DD><DL> 394 <DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>long</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>long</code> value 395 <DT><B>Returns:</B><DD>the least index <code>i</code> for which <code>array[i] == target</code>, or 396 <code>-1</code> if no such index exists.</DL> 397 </DD> 398 </DL> 399 <HR> 400 401 <A NAME="indexOf(long[], long[])"><!-- --></A><H3> 402 indexOf</H3> 403 <PRE> 404 public static int <B>indexOf</B>(long[] array, 405 long[] target)</PRE> 406 <DL> 407 <DD>Returns the start position of the first occurrence of the specified <code>target</code> within <code>array</code>, or <code>-1</code> if there is no such occurrence. 408 409 <p>More formally, returns the lowest index <code>i</code> such that <code>java.util.Arrays.copyOfRange(array, i, i + target.length)</code> contains exactly 410 the same elements as <code>target</code>. 411 <P> 412 <DD><DL> 413 <DT><B>Parameters:</B><DD><CODE>array</CODE> - the array to search for the sequence <code>target</code><DD><CODE>target</CODE> - the array to search for as a sub-sequence of <code>array</code></DL> 414 </DD> 415 </DL> 416 <HR> 417 418 <A NAME="lastIndexOf(long[], long)"><!-- --></A><H3> 419 lastIndexOf</H3> 420 <PRE> 421 public static int <B>lastIndexOf</B>(long[] array, 422 long target)</PRE> 423 <DL> 424 <DD>Returns the index of the last appearance of the value <code>target</code> in 425 <code>array</code>. 426 <P> 427 <DD><DL> 428 <DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>long</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>long</code> value 429 <DT><B>Returns:</B><DD>the greatest index <code>i</code> for which <code>array[i] == target</code>, 430 or <code>-1</code> if no such index exists.</DL> 431 </DD> 432 </DL> 433 <HR> 434 435 <A NAME="min(long...)"><!-- --></A><H3> 436 min</H3> 437 <PRE> 438 public static long <B>min</B>(long... array)</PRE> 439 <DL> 440 <DD>Returns the least value present in <code>array</code>. 441 <P> 442 <DD><DL> 443 <DT><B>Parameters:</B><DD><CODE>array</CODE> - a <i>nonempty</i> array of <code>long</code> values 444 <DT><B>Returns:</B><DD>the value present in <code>array</code> that is less than or equal to 445 every other value in the array 446 <DT><B>Throws:</B> 447 <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <code>array</code> is empty</DL> 448 </DD> 449 </DL> 450 <HR> 451 452 <A NAME="max(long...)"><!-- --></A><H3> 453 max</H3> 454 <PRE> 455 public static long <B>max</B>(long... array)</PRE> 456 <DL> 457 <DD>Returns the greatest value present in <code>array</code>. 458 <P> 459 <DD><DL> 460 <DT><B>Parameters:</B><DD><CODE>array</CODE> - a <i>nonempty</i> array of <code>long</code> values 461 <DT><B>Returns:</B><DD>the value present in <code>array</code> that is greater than or equal to 462 every other value in the array 463 <DT><B>Throws:</B> 464 <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <code>array</code> is empty</DL> 465 </DD> 466 </DL> 467 <HR> 468 469 <A NAME="concat(long[]...)"><!-- --></A><H3> 470 concat</H3> 471 <PRE> 472 public static long[] <B>concat</B>(long[]... arrays)</PRE> 473 <DL> 474 <DD>Returns the values from each provided array combined into a single array. 475 For example, <code>concat(new long[] {a, b}, new long[] {}, new 476 long[] {c}</code> returns the array <code>{a, b, c}</code>. 477 <P> 478 <DD><DL> 479 <DT><B>Parameters:</B><DD><CODE>arrays</CODE> - zero or more <code>long</code> arrays 480 <DT><B>Returns:</B><DD>a single array containing all the values from the source arrays, in 481 order</DL> 482 </DD> 483 </DL> 484 <HR> 485 486 <A NAME="toByteArray(long)"><!-- --></A><H3> 487 toByteArray</H3> 488 <PRE> 489 public static byte[] <B>toByteArray</B>(long value)</PRE> 490 <DL> 491 <DD>Returns a big-endian representation of <code>value</code> in an 8-element byte 492 array; equivalent to <code>ByteBuffer.allocate(8).putLong(value).array()</code>. 493 For example, the input value <code>0x1213141516171819L</code> would yield the 494 byte array <code>{0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19}</code>. 495 496 <p>If you need to convert and concatenate several values (possibly even of 497 different types), use a shared <A HREF="http://java.sun.com/javase/6/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio"><CODE>ByteBuffer</CODE></A> instance, or use 498 <A HREF="../../../../com/google/common/io/ByteStreams.html#newDataOutput()"><CODE>ByteStreams.newDataOutput()</CODE></A> to get a growable 499 buffer. 500 501 <p><b>Warning:</b> do not use this method in GWT. It returns wrong answers. 502 <P> 503 <DD><DL> 504 </DL> 505 </DD> 506 </DL> 507 <HR> 508 509 <A NAME="fromByteArray(byte[])"><!-- --></A><H3> 510 fromByteArray</H3> 511 <PRE> 512 public static long <B>fromByteArray</B>(byte[] bytes)</PRE> 513 <DL> 514 <DD>Returns the <code>long</code> value whose big-endian representation is 515 stored in the first 8 bytes of <code>bytes</code>; equivalent to <code>ByteBuffer.wrap(bytes).getLong()</code>. For example, the input byte array 516 <code>{0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19}</code> would yield the 517 <code>long</code> value <code>0x1213141516171819L</code>. 518 519 <p>Arguably, it's preferable to use <A HREF="http://java.sun.com/javase/6/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio"><CODE>ByteBuffer</CODE></A>; that 520 library exposes much more flexibility at little cost in readability. 521 522 <p><b>Warning:</b> do not use this method in GWT. It returns wrong answers. 523 <P> 524 <DD><DL> 525 526 <DT><B>Throws:</B> 527 <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <code>bytes</code> has fewer than 8 528 elements</DL> 529 </DD> 530 </DL> 531 <HR> 532 533 <A NAME="ensureCapacity(long[], int, int)"><!-- --></A><H3> 534 ensureCapacity</H3> 535 <PRE> 536 public static long[] <B>ensureCapacity</B>(long[] array, 537 int minLength, 538 int padding)</PRE> 539 <DL> 540 <DD>Returns an array containing the same values as <code>array</code>, but 541 guaranteed to be of a specified minimum length. If <code>array</code> already 542 has a length of at least <code>minLength</code>, it is returned directly. 543 Otherwise, a new array of size <code>minLength + padding</code> is returned, 544 containing the values of <code>array</code>, and zeroes in the remaining places. 545 <P> 546 <DD><DL> 547 <DT><B>Parameters:</B><DD><CODE>array</CODE> - the source array<DD><CODE>minLength</CODE> - the minimum length the returned array must guarantee<DD><CODE>padding</CODE> - an extra amount to "grow" the array by if growth is 548 necessary 549 <DT><B>Returns:</B><DD>an array containing the values of <code>array</code>, with guaranteed 550 minimum length <code>minLength</code> 551 <DT><B>Throws:</B> 552 <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <code>minLength</code> or <code>padding</code> is 553 negative</DL> 554 </DD> 555 </DL> 556 <HR> 557 558 <A NAME="join(java.lang.String, long...)"><!-- --></A><H3> 559 join</H3> 560 <PRE> 561 public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>join</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> separator, 562 long... array)</PRE> 563 <DL> 564 <DD>Returns a string containing the supplied <code>long</code> values separated 565 by <code>separator</code>. For example, <code>join("-", 1L, 2L, 3L)</code> returns 566 the string <code>"1-2-3"</code>. 567 <P> 568 <DD><DL> 569 <DT><B>Parameters:</B><DD><CODE>separator</CODE> - the text that should appear between consecutive values in 570 the resulting string (but not at the start or end)<DD><CODE>array</CODE> - an array of <code>long</code> values, possibly empty</DL> 571 </DD> 572 </DL> 573 <HR> 574 575 <A NAME="lexicographicalComparator()"><!-- --></A><H3> 576 lexicographicalComparator</H3> 577 <PRE> 578 public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A><long[]> <B>lexicographicalComparator</B>()</PRE> 579 <DL> 580 <DD>Returns a comparator that compares two <code>long</code> arrays 581 lexicographically. That is, it compares, using <A HREF="../../../../com/google/common/primitives/Longs.html#compare(long, long)"><CODE>compare(long, long)</CODE></A>), the first pair of values that follow any 582 common prefix, or when one array is a prefix of the other, treats the 583 shorter array as the lesser. For example, 584 <code>[] < [1L] < [1L, 2L] < [2L]</code>. 585 586 <p>The returned comparator is inconsistent with <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang"><CODE>Object.equals(Object)</CODE></A> (since arrays support only identity equality), but 587 it is consistent with <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Arrays.html?is-external=true#equals(long[], long[])" title="class or interface in java.util"><CODE>Arrays.equals(long[], long[])</CODE></A>. 588 <P> 589 <DD><DL> 590 <DT><B>Since:</B></DT> 591 <DD>2010.01.04 <b>tentative</b></DD> 592 <DT><B>See Also:</B><DD><a href="http://en.wikipedia.org/wiki/Lexicographical_order"> 593 Lexicographical order</a> article at Wikipedia</DL> 594 </DD> 595 </DL> 596 <HR> 597 598 <A NAME="toArray(java.util.Collection)"><!-- --></A><H3> 599 toArray</H3> 600 <PRE> 601 public static long[] <B>toArray</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</A>> collection)</PRE> 602 <DL> 603 <DD>Copies a collection of <code>Long</code> instances into a new array of 604 primitive <code>long</code> values. 605 606 <p>Elements are copied from the argument collection as if by <code>collection.toArray()</code>. Calling this method is as thread-safe as calling 607 that method. 608 <P> 609 <DD><DL> 610 <DT><B>Parameters:</B><DD><CODE>collection</CODE> - a collection of <code>Long</code> objects 611 <DT><B>Returns:</B><DD>an array containing the same values as <code>collection</code>, in the 612 same order, converted to primitives 613 <DT><B>Throws:</B> 614 <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</A></CODE> - if <code>collection</code> or any of its elements 615 is null</DL> 616 </DD> 617 </DL> 618 <HR> 619 620 <A NAME="asList(long...)"><!-- --></A><H3> 621 asList</H3> 622 <PRE> 623 public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</A>> <B>asList</B>(long... backingArray)</PRE> 624 <DL> 625 <DD>Returns a fixed-size list backed by the specified array, similar to <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Arrays.html?is-external=true#asList(T...)" title="class or interface in java.util"><CODE>Arrays.asList(Object[])</CODE></A>. The list supports <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true#set(int, E)" title="class or interface in java.util"><CODE>List.set(int, Object)</CODE></A>, 626 but any attempt to set a value to <code>null</code> will result in a <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang"><CODE>NullPointerException</CODE></A>. 627 628 <p>The returned list maintains the values, but not the identities, of 629 <code>Long</code> objects written to or read from it. For example, whether 630 <code>list.get(0) == list.get(0)</code> is true for the returned list is 631 unspecified. 632 <P> 633 <DD><DL> 634 <DT><B>Parameters:</B><DD><CODE>backingArray</CODE> - the array to back the list 635 <DT><B>Returns:</B><DD>a list view of the array</DL> 636 </DD> 637 </DL> 638 <!-- ========= END OF CLASS DATA ========= --> 639 <HR> 640 641 642 <!-- ======= START OF BOTTOM NAVBAR ====== --> 643 <A NAME="navbar_bottom"><!-- --></A> 644 <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 645 <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 646 <TR> 647 <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 648 <A NAME="navbar_bottom_firstrow"><!-- --></A> 649 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 650 <TR ALIGN="center" VALIGN="top"> 651 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 652 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 653 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 654 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Longs.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 655 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 656 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 657 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 658 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 659 </TR> 660 </TABLE> 661 </TD> 662 <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 663 </EM> 664 </TD> 665 </TR> 666 667 <TR> 668 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 669 <A HREF="../../../../com/google/common/primitives/Ints.html" title="class in com.google.common.primitives"><B>PREV CLASS</B></A> 670 <A HREF="../../../../com/google/common/primitives/Primitives.html" title="class in com.google.common.primitives"><B>NEXT CLASS</B></A></FONT></TD> 671 <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 672 <A HREF="../../../../index.html?com/google/common/primitives/Longs.html" target="_top"><B>FRAMES</B></A> 673 <A HREF="Longs.html" target="_top"><B>NO FRAMES</B></A> 674 <SCRIPT type="text/javascript"> 675 <!-- 676 if(window==top) { 677 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 678 } 679 //--> 680 </SCRIPT> 681 <NOSCRIPT> 682 <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> 683 </NOSCRIPT> 684 685 686 </FONT></TD> 687 </TR> 688 <TR> 689 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 690 SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 691 <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 692 DETAIL: <A HREF="#field_detail">FIELD</A> | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 693 </TR> 694 </TABLE> 695 <A NAME="skip-navbar_bottom"></A> 696 <!-- ======== END OF BOTTOM NAVBAR ======= --> 697 698 <HR> 699 700 </BODY> 701 </HTML> 702
