Examples of java.util.Random.nextInt()

java.util.Random.nextInt()
Returns the next pseudorandom, uniformly distributed {@code int}value from this random number generator's sequence. The general contract of {@code nextInt} is that one {@code int} value ispseudorandomly generated and returned. All 2³² possible {@code int} values are produced with(approximately) equal probability.
The method {@code nextInt} is implemented by class {@code Random}as if by:
```
  {@code}public int nextInt()  return next(32); }}
```
@return the next pseudorandom, uniformly distributed {@code int}value from this random number generator's sequence

        // select randomized
        Random random = new Random(1);
        time = System.currentTimeMillis();
        prep = conn.prepareStatement("SELECT * FROM TEST WHERE ID = ?");
        for (int i = 0; i < len; i++) {
            prep.setInt(1, random.nextInt(len));
            ResultSet rs = prep.executeQuery();
            rs.next();
            assertFalse(rs.next());
            if (i % 50000 == 0) {
                trace("  " + (100 * i / len) + "%");

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        // delete
        time = System.currentTimeMillis();
        prep = conn.prepareStatement("DELETE FROM TEST WHERE ID = ?");
        for (int i = 0; i < len; i++) {
            prep.setInt(1, random.nextInt(len));
            prep.executeUpdate();
            if (i % 50000 == 0) {
                trace("  " + (100 * i / len) + "%");
            }
        }

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        int[] countSave = new int[2];
        int len = getSize(2000, 10000);
        Random random = new Random(10);
        Savepoint sp = null;
        for (int i = 0; i < len; i++) {
            int tableId = random.nextInt(2);
            String table = "TEST" + tableId;
            int op = random.nextInt(6);
            switch (op) {
            case 0:
                stat.execute("INSERT INTO " + table + "(NAME) VALUES('op" + i + "')");

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        Random random = new Random(10);
        Savepoint sp = null;
        for (int i = 0; i < len; i++) {
            int tableId = random.nextInt(2);
            String table = "TEST" + tableId;
            int op = random.nextInt(6);
            switch (op) {
            case 0:
                stat.execute("INSERT INTO " + table + "(NAME) VALUES('op" + i + "')");
                count[tableId]++;
                break;

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        Random random = new Random(1);
        field = new BitField();
        field.set(0, 500, true);
        for (int i = 0; i < 100000; i++) {
            int a = random.nextInt(120);
            int b = a + 1 + random.nextInt(200);
            field.clear(a);
            field.clear(b);
            assertEquals(b, field.nextClearBit(a + 1));
            field.set(a);

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        Random random = new Random(1);
        field = new BitField();
        field.set(0, 500, true);
        for (int i = 0; i < 100000; i++) {
            int a = random.nextInt(120);
            int b = a + 1 + random.nextInt(200);
            field.clear(a);
            field.clear(b);
            assertEquals(b, field.nextClearBit(a + 1));
            field.set(a);
            field.set(b);

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    private void testSetFast(BitField used, boolean init) {
        int len = 10000;
        Random random = new Random(1);
        for (int i = 0, x = 0; i < len / 8; i++) {
            int mask = random.nextInt() & 255;
            if (init) {
                assertEquals(mask, used.getByte(x));
                x += 8;
                // for (int j = 0; j < 8; j++, x++) {
                // if (used.get(x) != ((mask & (1 << j)) != 0)) {

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        BitSet set = new BitSet();
        int max = 300;
        int count = 100000;
        Random random = new Random(1);
        for (int i = 0; i < count; i++) {
            int idx = random.nextInt(max);
            if (random.nextBoolean()) {
                if (random.nextBoolean()) {
                    bits.set(idx);
                    set.set(idx);
                } else {

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        int maxOffset = 500;
        int maxLen = 500;
        int total = maxOffset + maxLen;
        int count = 10000;
        for (int i = 0; i < count; i++) {
            int offset = random.nextInt(maxOffset);
            int len = random.nextInt(maxLen);
            boolean val = random.nextBoolean();
            set.set(offset, offset + len, val);
            bits.set(offset, offset + len, val);
            for (int j = 0; j < total; j++) {

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        int maxLen = 500;
        int total = maxOffset + maxLen;
        int count = 10000;
        for (int i = 0; i < count; i++) {
            int offset = random.nextInt(maxOffset);
            int len = random.nextInt(maxLen);
            boolean val = random.nextBoolean();
            set.set(offset, offset + len, val);
            bits.set(offset, offset + len, val);
            for (int j = 0; j < total; j++) {
                assertEquals(set.get(j), bits.get(j));

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