Expected output of Test011_beta is:

  Test011_beta is ok

Output I got (on all three platforms) was:

  Test011_beta.java:23: Impossible for java.lang.Thread to be instance of Test011_beta.
          assert(!(t instanceof Test011_beta));
                     ^
  1 error

Here's the code:

/*
 * Copyright (c) 1994 by FirstPerson, Inc.
 * All rights reserved.
 *
 * @(#)Test011_beta.java 1.1 95/06/08 June 1994
 *
 * Arthur van Hoff, September 1994
 */
interface Test011_betaa {
}

/**
 * Test instanceof
 */
class Test011_beta extends Test implements Test011_betaa {
    void test1() {
        Object obj = this;
        Thread t = Thread.currentThread();
        assert(this instanceof Test011_beta);
        assert(!(null instanceof Test011_beta));
        assert(obj instanceof Test011_beta);
        assert(t instanceof Thread);
        assert(!(t instanceof Test011_beta));
        //assert(obj instanceof Test11a);
    }
    public static void main(String argv[]) {
        String test = "Test011_beta";
        Test t = (Test) new Test011_beta();
        testnr++; assertionnr = 0; t.test1();
        testnr++; assertionnr = 0; t.test2();
        testnr++; assertionnr = 0; t.test3();
        testnr++; assertionnr = 0; t.test4();
        testnr++; assertionnr = 0; t.test5();
        testnr++; assertionnr = 0; t.test7();
        testnr++; assertionnr = 0; t.test8();
        testnr++; assertionnr = 0; t.test9();
        testnr++; assertionnr = 0; t.test10();

        if (failed == 0) {
            System.err.println(test + " is ok");
            System.exit(0);
        } else {
            System.err.println(test + " failed");
            System.exit(1);
        }
    }

}