Examples of java.util.Random.nextBoolean()

java.util.Random.nextBoolean()
Returns the next pseudorandom, uniformly distributed {@code boolean} value from this random number generator'ssequence. The general contract of {@code nextBoolean} is that one{@code boolean} value is pseudorandomly generated and returned. Thevalues {@code true} and {@code false} are produced with(approximately) equal probability.
The method {@code nextBoolean} is implemented by class {@code Random}as if by:
```
  {@code}public boolean nextBoolean()  return next(1) != 0; }}
```
@return the next pseudorandom, uniformly distributed{@code boolean} value from this random number generator'ssequence @since 1.2

                // 5% truncate or drop table
                if (tables.size() > 0) {
                    Connection conn = connections.get(random.nextInt(connections.size()));
                    Statement stat = conn.createStatement();
                    String table = tables.get(random.nextInt(tables.size()));
                    if (random.nextBoolean()) {
                        stat.execute("TRUNCATE TABLE " + table);
                    } else {
                        stat.execute("DROP TABLE " + table);
                        tables.remove(table);
                    }

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        for (int i = 0; i < 10; i++) {
            conn2 = getConnection(url, getUser(), getPassword());
            list.add(conn2);
            stat2 = conn.createStatement();
            conn2.setAutoCommit(false);
            if (r.nextBoolean()) {
                stat2.execute("update test set id = id where id = " + r.nextInt(100));
            } else {
                stat2.execute("delete from test where id = " + r.nextInt(100));
            }
        }

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                start = now;
            }
            int x;
            x = random.nextInt(100);
            stat.execute("drop table if exists test" + x);
            String type = random.nextBoolean() ? "temp" : "";
            // String type = "";
            stat.execute("create " + type + " table test" + x + "(id int primary key, name varchar)");
            if (random.nextBoolean()) {
                stat.execute("create index idx_" + x + " on test" + x + "(name, id)");
            }

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            x = random.nextInt(100);
            stat.execute("drop table if exists test" + x);
            String type = random.nextBoolean() ? "temp" : "";
            // String type = "";
            stat.execute("create " + type + " table test" + x + "(id int primary key, name varchar)");
            if (random.nextBoolean()) {
                stat.execute("create index idx_" + x + " on test" + x + "(name, id)");
            }
            if (random.nextBoolean()) {
                stat.execute("insert into test" + x + " select x, x from system_range(1, " + random.nextInt(100) + ")");
            }

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            // String type = "";
            stat.execute("create " + type + " table test" + x + "(id int primary key, name varchar)");
            if (random.nextBoolean()) {
                stat.execute("create index idx_" + x + " on test" + x + "(name, id)");
            }
            if (random.nextBoolean()) {
                stat.execute("insert into test" + x + " select x, x from system_range(1, " + random.nextInt(100) + ")");
            }
            if (random.nextInt(10) == 1) {
                conn.close();
                conn = DriverManager.getConnection(url, "sa", "sa");

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        Random random = new Random(1);
        s1.execute("CREATE TABLE TEST(ID INT IDENTITY, NAME VARCHAR)");
        Statement s;
        Connection c;
        for (int i = 0; i < 1000; i++) {
            if (random.nextBoolean()) {
                s = s1;
                c = c1;
            } else {
                s = s2;
                c = c2;

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        c2.commit();


        random = new Random(1);
        s1.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR)");
        for (int i = 0; i < 1000; i++) {
            if (random.nextBoolean()) {
                s = s1;
                c = c1;
            } else {
                s = s2;
                c = c2;

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            if (random.nextInt(10) == 1) {
                len = random.nextInt(100) * 2;
            } else {
                len = random.nextInt(2) * 2;
            }
            if (rollback && random.nextBoolean()) {
                // make the length odd
                len++;
            }
            // byte[] data = new byte[len];
            // random.nextBytes(data);

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        Random random = new Random(1);
        int len = getSize(50, 500);
        for (int i = 0; i < len; i++) {
            stat.execute("drop table if exists test");
            stat.execute("create table test(x int)");
            if (random.nextBoolean()) {
                int count = random.nextBoolean() ? 1 : 1 + random.nextInt(len);
                if (count > 0) {
                    stat.execute("insert into test select null from system_range(1, " + count + ")");
                }
            }

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        int len = getSize(50, 500);
        for (int i = 0; i < len; i++) {
            stat.execute("drop table if exists test");
            stat.execute("create table test(x int)");
            if (random.nextBoolean()) {
                int count = random.nextBoolean() ? 1 : 1 + random.nextInt(len);
                if (count > 0) {
                    stat.execute("insert into test select null from system_range(1, " + count + ")");
                }
            }
            int maxExpected = -1;

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