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 20:47:59 PST 2010 --> 6<TITLE> 7Booleans (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"> 15function windowTitle() 16{ 17 if (location.href.indexOf('is-external=true') == -1) { 18 parent.document.title="Booleans (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 COLSPAN=2 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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 | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 81DETAIL: FIELD | 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"> 91com.google.common.primitives</FONT> 92<BR> 93Class Booleans</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.Booleans</B> 97</PRE> 98<HR> 99<DL> 100<DT><PRE>public final class <B>Booleans</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> 104Static utility methods pertaining to <code>boolean</code> primitives, that are not 105 already found in either <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang"><CODE>Boolean</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> 118 119<!-- ========== METHOD SUMMARY =========== --> 120 121<A NAME="method_summary"><!-- --></A> 122<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 123<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 124<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 125<B>Method Summary</B></FONT></TH> 126</TR> 127<TR BGCOLOR="white" CLASS="TableRowColor"> 128<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 129<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/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>></CODE></FONT></TD> 130<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#asList(boolean...)">asList</A></B>(boolean... backingArray)</CODE> 131 132<BR> 133 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> 134</TR> 135<TR BGCOLOR="white" CLASS="TableRowColor"> 136<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 137<CODE>static int</CODE></FONT></TD> 138<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#compare(boolean, boolean)">compare</A></B>(boolean a, 139 boolean b)</CODE> 140 141<BR> 142 Compares the two specified <code>boolean</code> values in the standard way 143 (<code>false</code> is considered less than <code>true</code>).</TD> 144</TR> 145<TR BGCOLOR="white" CLASS="TableRowColor"> 146<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 147<CODE>static boolean[]</CODE></FONT></TD> 148<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#concat(boolean[]...)">concat</A></B>(boolean[]... arrays)</CODE> 149 150<BR> 151 Returns the values from each provided array combined into a single array.</TD> 152</TR> 153<TR BGCOLOR="white" CLASS="TableRowColor"> 154<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 155<CODE>static boolean</CODE></FONT></TD> 156<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#contains(boolean[], boolean)">contains</A></B>(boolean[] array, 157 boolean target)</CODE> 158 159<BR> 160 Returns <code>true</code> if <code>target</code> is present as an element anywhere in 161 <code>array</code>.</TD> 162</TR> 163<TR BGCOLOR="white" CLASS="TableRowColor"> 164<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 165<CODE>static boolean[]</CODE></FONT></TD> 166<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#ensureCapacity(boolean[], int, int)">ensureCapacity</A></B>(boolean[] array, 167 int minLength, 168 int padding)</CODE> 169 170<BR> 171 Returns an array containing the same values as <code>array</code>, but 172 guaranteed to be of a specified minimum length.</TD> 173</TR> 174<TR BGCOLOR="white" CLASS="TableRowColor"> 175<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 176<CODE>static int</CODE></FONT></TD> 177<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#hashCode(boolean)">hashCode</A></B>(boolean value)</CODE> 178 179<BR> 180 Returns a hash code for <code>value</code>; equal to the result of invoking 181 <code>((Boolean) value).hashCode()</code>.</TD> 182</TR> 183<TR BGCOLOR="white" CLASS="TableRowColor"> 184<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 185<CODE>static int</CODE></FONT></TD> 186<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#indexOf(boolean[], boolean)">indexOf</A></B>(boolean[] array, 187 boolean target)</CODE> 188 189<BR> 190 Returns the index of the first appearance of the value <code>target</code> in 191 <code>array</code>.</TD> 192</TR> 193<TR BGCOLOR="white" CLASS="TableRowColor"> 194<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 195<CODE>static int</CODE></FONT></TD> 196<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#indexOf(boolean[], boolean[])">indexOf</A></B>(boolean[] array, 197 boolean[] target)</CODE> 198 199<BR> 200 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> 201</TR> 202<TR BGCOLOR="white" CLASS="TableRowColor"> 203<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 204<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> 205<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#join(java.lang.String, boolean...)">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, 206 boolean... array)</CODE> 207 208<BR> 209 Returns a string containing the supplied <code>boolean</code> values separated 210 by <code>separator</code>.</TD> 211</TR> 212<TR BGCOLOR="white" CLASS="TableRowColor"> 213<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 214<CODE>static int</CODE></FONT></TD> 215<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#lastIndexOf(boolean[], boolean)">lastIndexOf</A></B>(boolean[] array, 216 boolean target)</CODE> 217 218<BR> 219 Returns the index of the last appearance of the value <code>target</code> in 220 <code>array</code>.</TD> 221</TR> 222<TR BGCOLOR="white" CLASS="TableRowColor"> 223<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 224<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><boolean[]></CODE></FONT></TD> 225<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.html#lexicographicalComparator()">lexicographicalComparator</A></B>()</CODE> 226 227<BR> 228 Returns a comparator that compares two <code>boolean</code> arrays 229 lexicographically.</TD> 230</TR> 231<TR BGCOLOR="white" CLASS="TableRowColor"> 232<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 233<CODE>static boolean[]</CODE></FONT></TD> 234<TD><CODE><B><A HREF="../../../../com/google/common/primitives/Booleans.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/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>> collection)</CODE> 235 236<BR> 237 Copies a collection of <code>Boolean</code> instances into a new array of 238 primitive <code>boolean</code> values.</TD> 239</TR> 240</TABLE> 241 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 242<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 243<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 244<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> 245</TR> 246<TR BGCOLOR="white" CLASS="TableRowColor"> 247<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> 248</TR> 249</TABLE> 250 251<P> 252 253<!-- ============ METHOD DETAIL ========== --> 254 255<A NAME="method_detail"><!-- --></A> 256<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 257<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 258<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 259<B>Method Detail</B></FONT></TH> 260</TR> 261</TABLE> 262 263<A NAME="hashCode(boolean)"><!-- --></A><H3> 264hashCode</H3> 265<PRE> 266public static int <B>hashCode</B>(boolean value)</PRE> 267<DL> 268<DD>Returns a hash code for <code>value</code>; equal to the result of invoking 269 <code>((Boolean) value).hashCode()</code>. 270<P> 271<DD><DL> 272<DT><B>Parameters:</B><DD><CODE>value</CODE> - a primitive <code>boolean</code> value 273<DT><B>Returns:</B><DD>a hash code for the value</DL> 274</DD> 275</DL> 276<HR> 277 278<A NAME="compare(boolean, boolean)"><!-- --></A><H3> 279compare</H3> 280<PRE> 281public static int <B>compare</B>(boolean a, 282 boolean b)</PRE> 283<DL> 284<DD>Compares the two specified <code>boolean</code> values in the standard way 285 (<code>false</code> is considered less than <code>true</code>). The sign of the 286 value returned is the same as that of <code>((Boolean) a).compareTo(b)</code>. 287<P> 288<DD><DL> 289<DT><B>Parameters:</B><DD><CODE>a</CODE> - the first <code>boolean</code> to compare<DD><CODE>b</CODE> - the second <code>boolean</code> to compare 290<DT><B>Returns:</B><DD>a positive number if only <code>a</code> is <code>true</code>, a negative 291 number if only <code>b</code> is true, or zero if <code>a == b</code></DL> 292</DD> 293</DL> 294<HR> 295 296<A NAME="contains(boolean[], boolean)"><!-- --></A><H3> 297contains</H3> 298<PRE> 299public static boolean <B>contains</B>(boolean[] array, 300 boolean target)</PRE> 301<DL> 302<DD>Returns <code>true</code> if <code>target</code> is present as an element anywhere in 303 <code>array</code>. 304 305 <p><b>Note:</b> consider representing the array as a <A HREF="http://java.sun.com/javase/6/docs/api/java/util/BitSet.html?is-external=true" title="class or interface in java.util"><CODE>BitSet</CODE></A> instead, replacing <code>Booleans.contains(array, true)</code> 306 with <code>!bitSet.isEmpty()</code> and <code>Booleans.contains(array, false)</code> 307 with <code>bitSet.nextClearBit(0) == sizeOfBitSet</code>. 308<P> 309<DD><DL> 310<DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>boolean</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>boolean</code> value 311<DT><B>Returns:</B><DD><code>true</code> if <code>array[i] == target</code> for some value of <code>i</code></DL> 312</DD> 313</DL> 314<HR> 315 316<A NAME="indexOf(boolean[], boolean)"><!-- --></A><H3> 317indexOf</H3> 318<PRE> 319public static int <B>indexOf</B>(boolean[] array, 320 boolean target)</PRE> 321<DL> 322<DD>Returns the index of the first appearance of the value <code>target</code> in 323 <code>array</code>. 324 325 <p><b>Note:</b> consider representing the array as a <A HREF="http://java.sun.com/javase/6/docs/api/java/util/BitSet.html?is-external=true" title="class or interface in java.util"><CODE>BitSet</CODE></A> 326 instead, and using <A HREF="http://java.sun.com/javase/6/docs/api/java/util/BitSet.html?is-external=true#nextSetBit(int)" title="class or interface in java.util"><CODE>BitSet.nextSetBit(int)</CODE></A> or <A HREF="http://java.sun.com/javase/6/docs/api/java/util/BitSet.html?is-external=true#nextClearBit(int)" title="class or interface in java.util"><CODE>BitSet.nextClearBit(int)</CODE></A>. 327<P> 328<DD><DL> 329<DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>boolean</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>boolean</code> value 330<DT><B>Returns:</B><DD>the least index <code>i</code> for which <code>array[i] == target</code>, or 331 <code>-1</code> if no such index exists.</DL> 332</DD> 333</DL> 334<HR> 335 336<A NAME="indexOf(boolean[], boolean[])"><!-- --></A><H3> 337indexOf</H3> 338<PRE> 339public static int <B>indexOf</B>(boolean[] array, 340 boolean[] target)</PRE> 341<DL> 342<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. 343 344 <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 345 the same elements as <code>target</code>. 346<P> 347<DD><DL> 348<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> 349</DD> 350</DL> 351<HR> 352 353<A NAME="lastIndexOf(boolean[], boolean)"><!-- --></A><H3> 354lastIndexOf</H3> 355<PRE> 356public static int <B>lastIndexOf</B>(boolean[] array, 357 boolean target)</PRE> 358<DL> 359<DD>Returns the index of the last appearance of the value <code>target</code> in 360 <code>array</code>. 361<P> 362<DD><DL> 363<DT><B>Parameters:</B><DD><CODE>array</CODE> - an array of <code>boolean</code> values, possibly empty<DD><CODE>target</CODE> - a primitive <code>boolean</code> value 364<DT><B>Returns:</B><DD>the greatest index <code>i</code> for which <code>array[i] == target</code>, 365 or <code>-1</code> if no such index exists.</DL> 366</DD> 367</DL> 368<HR> 369 370<A NAME="concat(boolean[]...)"><!-- --></A><H3> 371concat</H3> 372<PRE> 373public static boolean[] <B>concat</B>(boolean[]... arrays)</PRE> 374<DL> 375<DD>Returns the values from each provided array combined into a single array. 376 For example, <code>concat(new boolean[] {a, b}, new boolean[] {}, new 377 boolean[] {c}</code> returns the array <code>{a, b, c}</code>. 378<P> 379<DD><DL> 380<DT><B>Parameters:</B><DD><CODE>arrays</CODE> - zero or more <code>boolean</code> arrays 381<DT><B>Returns:</B><DD>a single array containing all the values from the source arrays, in 382 order</DL> 383</DD> 384</DL> 385<HR> 386 387<A NAME="ensureCapacity(boolean[], int, int)"><!-- --></A><H3> 388ensureCapacity</H3> 389<PRE> 390public static boolean[] <B>ensureCapacity</B>(boolean[] array, 391 int minLength, 392 int padding)</PRE> 393<DL> 394<DD>Returns an array containing the same values as <code>array</code>, but 395 guaranteed to be of a specified minimum length. If <code>array</code> already 396 has a length of at least <code>minLength</code>, it is returned directly. 397 Otherwise, a new array of size <code>minLength + padding</code> is returned, 398 containing the values of <code>array</code>, and zeroes in the remaining places. 399<P> 400<DD><DL> 401<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 402 necessary 403<DT><B>Returns:</B><DD>an array containing the values of <code>array</code>, with guaranteed 404 minimum length <code>minLength</code> 405<DT><B>Throws:</B> 406<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 407 negative</DL> 408</DD> 409</DL> 410<HR> 411 412<A NAME="join(java.lang.String, boolean...)"><!-- --></A><H3> 413join</H3> 414<PRE> 415public 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, 416 boolean... array)</PRE> 417<DL> 418<DD>Returns a string containing the supplied <code>boolean</code> values separated 419 by <code>separator</code>. For example, <code>join("-", false, true, false)</code> 420 returns the string <code>"false-true-false"</code>. 421<P> 422<DD><DL> 423<DT><B>Parameters:</B><DD><CODE>separator</CODE> - the text that should appear between consecutive values in 424 the resulting string (but not at the start or end)<DD><CODE>array</CODE> - an array of <code>boolean</code> values, possibly empty</DL> 425</DD> 426</DL> 427<HR> 428 429<A NAME="lexicographicalComparator()"><!-- --></A><H3> 430lexicographicalComparator</H3> 431<PRE> 432public 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><boolean[]> <B>lexicographicalComparator</B>()</PRE> 433<DL> 434<DD>Returns a comparator that compares two <code>boolean</code> arrays 435 lexicographically. That is, it compares, using <A HREF="../../../../com/google/common/primitives/Booleans.html#compare(boolean, boolean)"><CODE>compare(boolean, boolean)</CODE></A>), the first pair of values that follow any 436 common prefix, or when one array is a prefix of the other, treats the 437 shorter array as the lesser. For example, 438 <code>[] < [false] < [false, true] < [true]</code>. 439 440 <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 441 it is consistent with <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Arrays.html?is-external=true#equals(boolean[], boolean[])" title="class or interface in java.util"><CODE>Arrays.equals(boolean[], boolean[])</CODE></A>. 442<P> 443<DD><DL> 444<DT><B>Since:</B></DT> 445 <DD>2010.01.04 <b>tentative</b></DD> 446<DT><B>See Also:</B><DD><a href="http://en.wikipedia.org/wiki/Lexicographical_order"> 447 Lexicographical order</a> article at Wikipedia</DL> 448</DD> 449</DL> 450<HR> 451 452<A NAME="toArray(java.util.Collection)"><!-- --></A><H3> 453toArray</H3> 454<PRE> 455public static boolean[] <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/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>> collection)</PRE> 456<DL> 457<DD>Copies a collection of <code>Boolean</code> instances into a new array of 458 primitive <code>boolean</code> values. 459 460 <p>Elements are copied from the argument collection as if by <code>collection.toArray()</code>. Calling this method is as thread-safe as calling 461 that method. 462 463 <p><b>Note:</b> consider representing the collection as a <A HREF="http://java.sun.com/javase/6/docs/api/java/util/BitSet.html?is-external=true" title="class or interface in java.util"><CODE>BitSet</CODE></A> instead. 464<P> 465<DD><DL> 466<DT><B>Parameters:</B><DD><CODE>collection</CODE> - a collection of <code>Boolean</code> objects 467<DT><B>Returns:</B><DD>an array containing the same values as <code>collection</code>, in the 468 same order, converted to primitives 469<DT><B>Throws:</B> 470<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 471 is null</DL> 472</DD> 473</DL> 474<HR> 475 476<A NAME="asList(boolean...)"><!-- --></A><H3> 477asList</H3> 478<PRE> 479public 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/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>> <B>asList</B>(boolean... backingArray)</PRE> 480<DL> 481<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>, 482 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>. 483 484 <p>The returned list maintains the values, but not the identities, of 485 <code>Boolean</code> objects written to or read from it. For example, whether 486 <code>list.get(0) == list.get(0)</code> is true for the returned list is 487 unspecified. 488<P> 489<DD><DL> 490<DT><B>Parameters:</B><DD><CODE>backingArray</CODE> - the array to back the list 491<DT><B>Returns:</B><DD>a list view of the array</DL> 492</DD> 493</DL> 494<!-- ========= END OF CLASS DATA ========= --> 495<HR> 496 497 498<!-- ======= START OF BOTTOM NAVBAR ====== --> 499<A NAME="navbar_bottom"><!-- --></A> 500<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 501<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 502<TR> 503<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 504<A NAME="navbar_bottom_firstrow"><!-- --></A> 505<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 506 <TR ALIGN="center" VALIGN="top"> 507 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 508 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 509 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 510 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Booleans.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 511 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 512 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 513 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 514 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 515 </TR> 516</TABLE> 517</TD> 518<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 519</EM> 520</TD> 521</TR> 522 523<TR> 524<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 525 PREV CLASS 526 <A HREF="../../../../com/google/common/primitives/Bytes.html" title="class in com.google.common.primitives"><B>NEXT CLASS</B></A></FONT></TD> 527<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 528 <A HREF="../../../../index.html?com/google/common/primitives/Booleans.html" target="_top"><B>FRAMES</B></A> 529 <A HREF="Booleans.html" target="_top"><B>NO FRAMES</B></A> 530 <SCRIPT type="text/javascript"> 531 <!-- 532 if(window==top) { 533 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 534 } 535 //--> 536</SCRIPT> 537<NOSCRIPT> 538 <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> 539</NOSCRIPT> 540 541 542</FONT></TD> 543</TR> 544<TR> 545<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 546 SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> 547<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 548DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> 549</TR> 550</TABLE> 551<A NAME="skip-navbar_bottom"></A> 552<!-- ======== END OF BOTTOM NAVBAR ======= --> 553 554<HR> 555 556</BODY> 557</HTML> 558
