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test/java/util/Collections/Disjoint.java

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   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug     4339792
  27  * @summary Basic test for Collections.disjoint
  28  * @author  Josh Bloch

  29  */
  30 
  31 import java.util.*;
  32 
  33 public class Disjoint {
  34     final static int N = 20;
  35 
  36     public static void main(String args[]) {
  37         // Make an array of lists each of which shares a single element
  38         // with its "neighbors," and no elements with other lists in the array
  39         Random rnd = new Random();
  40         List[] lists = new List[N];
  41         int x = 0;
  42         for (int i = 0; i < N; i++) {
  43             int size = rnd.nextInt(10) + 2;
  44             List<Integer> list = new ArrayList<Integer>(size);
  45             for (int j = 1; j < size; j++)
  46                 list.add(x++);
  47             list.add(x);
  48             Collections.shuffle(list);




   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug     4339792
  27  * @summary Basic test for Collections.disjoint
  28  * @author  Josh Bloch
  29  * @key randomness
  30  */
  31 
  32 import java.util.*;
  33 
  34 public class Disjoint {
  35     final static int N = 20;
  36 
  37     public static void main(String args[]) {
  38         // Make an array of lists each of which shares a single element
  39         // with its "neighbors," and no elements with other lists in the array
  40         Random rnd = new Random();
  41         List[] lists = new List[N];
  42         int x = 0;
  43         for (int i = 0; i < N; i++) {
  44             int size = rnd.nextInt(10) + 2;
  45             List<Integer> list = new ArrayList<Integer>(size);
  46             for (int j = 1; j < size; j++)
  47                 list.add(x++);
  48             list.add(x);
  49             Collections.shuffle(list);


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