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

                    }
                } else if ((p -= 1) <= 0) {
                    // 1%: close connection
                    if (connections.size() > 1) {
                        Connection conn = connections.remove(random.nextInt(connections.size()));
                        if (random.nextBoolean()) {
                            conn.close();
                        }
                    }
                } else if ((p -= 10) <= 0) {
                    // 10% create table

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                    // 20% large insert, delete, or update
                    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()) {
                            // 10% insert
                            stat.execute("INSERT INTO " + table + "(NAME) SELECT 'Hello ' || X FROM SYSTEM_RANGE(0, 20)");
                        } else if (random.nextBoolean()) {
                            // 5% update
                            stat.execute("UPDATE " + table + " SET NAME='Hallo Welt'");

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                    // 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);
                            System.out.println("#Info table dropped: " + table);
                            tables.remove(table);

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        db.execute("UPDATE TEST SET B = NULL WHERE B = 0");
        Random random = new Random();
        long seed = random.nextLong();
        println("seed: " + seed);
        for (int i = 0; i < 100; i++) {
            String column = random.nextBoolean() ? "A" : "B";
            String value = new String[] { "NULL", "0", "A", "B" }[random.nextInt(4)];
            String compare = random.nextBoolean() ? "A" : "B";
            int x = random.nextInt(3);
            String sql1 = "SELECT * FROM TEST T WHERE " + column + "+0 " +
                "IN(SELECT " + value + " FROM TEST I WHERE I." + compare + "=?) ORDER BY 1, 2";

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        long seed = random.nextLong();
        println("seed: " + seed);
        for (int i = 0; i < 100; i++) {
            String column = random.nextBoolean() ? "A" : "B";
            String value = new String[] { "NULL", "0", "A", "B" }[random.nextInt(4)];
            String compare = random.nextBoolean() ? "A" : "B";
            int x = random.nextInt(3);
            String sql1 = "SELECT * FROM TEST T WHERE " + column + "+0 " +
                "IN(SELECT " + value + " FROM TEST I WHERE I." + compare + "=?) ORDER BY 1, 2";
            String sql2 = "SELECT * FROM TEST T WHERE " + column + " " +
                "IN(SELECT " + value + " FROM TEST I WHERE I." + compare + "=?) ORDER BY 1, 2";

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        case RuleFixed.ANY_EXCEPT_DOUBLE_QUOTE:
        case RuleFixed.ANY_WORD:
        case RuleFixed.ANY_EXCEPT_2_DOLLAR:
        case RuleFixed.ANY_UNTIL_END: {
            StringBuilder buff = new StringBuilder();
            int len = r.nextBoolean() ? 1 : r.nextInt(5);
            for (int i = 0; i < len; i++) {
                buff.append((char) ('A' + r.nextInt('C' - 'A')));
            }
            return buff.toString();
        }

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        Random random = new Random(1);
        for (int i = 0; i < 100; i++) {
            int len = random.nextInt(10);
            StringBuilder buff = new StringBuilder();
            for (int j = 0; j < len; j++) {
                if (random.nextBoolean()) {
                    buff.append((char) random.nextInt(0x3000));
                } else {
                    buff.append((char) random.nextInt(255));
                }
            }

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        Random random = new Random(1);
        for (int i = 0; i < 1000; i++) {
            int len = random.nextInt(10);
            StringBuilder buff = new StringBuilder();
            for (int j = 0; j < len; j++) {
                if (random.nextBoolean()) {
                    buff.append((char) random.nextInt(0x3000));
                } else {
                    buff.append((char) random.nextInt(255));
                }
            }

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                // 20% large insert, delete, or update
                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()) {
                        // 10% insert
                        stat.execute("INSERT INTO " + table + "(NAME) SELECT 'Hello ' || X FROM SYSTEM_RANGE(0, 20)");
                    } else if (random.nextBoolean()) {
                        // 5% update
                        stat.execute("UPDATE " + table + " SET NAME='Hallo Welt'");

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                    Statement stat = conn.createStatement();
                    String table = tables.get(random.nextInt(tables.size()));
                    if (random.nextBoolean()) {
                        // 10% insert
                        stat.execute("INSERT INTO " + table + "(NAME) SELECT 'Hello ' || X FROM SYSTEM_RANGE(0, 20)");
                    } else if (random.nextBoolean()) {
                        // 5% update
                        stat.execute("UPDATE " + table + " SET NAME='Hallo Welt'");
                    } else {
                        // 5% delete
                        stat.execute("DELETE FROM " + table);

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