test/jdk/java/util/Collections/Disjoint.java

*** 1,7 ***
  /*
!  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ---
  /*
!  * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

*** 25,13 ***
--- 25,16 ---
   * @test
   * @bug     4339792
   * @summary Basic test for Collections.disjoint
   * @author  Josh Bloch
   * @key randomness
+  * @library /test/lib
   */
  
+ import jdk.test.lib.valueclass.VClass;
  import java.util.ArrayList;
+ import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Random;
  

*** 69,7 ***
--- 72,13 ---
                  if (Collections.disjoint(new HashSet<Integer>(a),
                                           new HashSet<Integer>(b)) != disjoint)
                      throw new RuntimeException("C: " + i + ", " + j);
              }
          }
+ 
+         List<VClass> va = Arrays.asList(new VClass(1, new int[] { 1 }), new VClass(2, new int[] { 2 }));
+         List<VClass> vb = Arrays.asList(new VClass(3, new int[] { 3 }), new VClass(4, new int[] { 4 }));
+         List<VClass> vc = Arrays.asList(new VClass(2, new int[] { 2 }), new VClass(5, new int[] { 5 }));
+         if (!Collections.disjoint(va, vb)) throw new RuntimeException("value disjoint failed");
+         if (Collections.disjoint(va, vc)) throw new RuntimeException("value non-disjoint failed");
      }
  }