How to use

hashCode

method

in

java.lang.Boolean

/**
 * Returns a suitable hash code for this mutable.
 *
 * @return the hash code returned by <code>Boolean.TRUE</code> or <code>Boolean.FALSE</code>
 */
@Override
public int hashCode() {
  return value ? Boolean.TRUE.hashCode() : Boolean.FALSE.hashCode();
}

@Override
public int hashCode()
{
  return Boolean.hashCode(all);
}

/**
 * Returns a suitable hash code for this mutable.
 * 
 * @return the hash code returned by <code>Boolean.TRUE</code> or <code>Boolean.FALSE</code>
 */
public int hashCode() {
  return value ? Boolean.TRUE.hashCode() : Boolean.FALSE.hashCode();
}

/**
 * Return the same value as {@link Boolean#hashCode(boolean)}}.
 * @deprecated as of Spring Framework 5.0, in favor of the native JDK 8 variant
 */
@Deprecated
public static int hashCode(boolean bool) {
  return Boolean.hashCode(bool);
}

/**
 * Calculate hash code of a boolean value
 * @param value the value to compute hash code for
 * @return the hash code of the given value
 */
public static int hashCode( boolean value )
{
  return Boolean.hashCode( value );
}

/**
 * Return a hash code based on the contents of the specified array.
 * If {@code array} is {@code null}, this method returns 0.
 */
public static int nullSafeHashCode(@Nullable boolean[] array) {
  if (array == null) {
    return 0;
  }
  int hash = INITIAL_HASH;
  for (boolean element : array) {
    hash = MULTIPLIER * hash + Boolean.hashCode(element);
  }
  return hash;
}

@Override
public int hashCode() {
  int h = 1;
  if (_id != null) {
    h += _id.hashCode();
  }
  if (_useInput != null) {
    h += _useInput.hashCode();
  }
  return h;
}

@Override
public int hashCode() {
  int h = 1;
  if (_id != null) {
    h += _id.hashCode();
  }
  if (_useInput != null) {
    h += _useInput.hashCode();
  }
  return h;
}

@Override
public int hashCode() {
  return 31 * Boolean.hashCode(precomputed.immutableTargetType) + Arrays.hashCode(fieldSerializers);
}

@Override
public int hashCode() {
 return i.hashCode();
}

@Override
public int hashCode() {
  final int prime = 31;
  int result = 1;
  result = prime * result + (Boolean.valueOf(parenthesized).hashCode());
  result = prime * result + distionOption;
  result = prime * result + ((from == null) ? 0 : from.hashCode());
  result = prime * result + ((groupBy == null) ? 0 : groupBy.hashCode());
  result = prime * result + ((into == null) ? 0 : into.hashCode());
  result = prime * result + ((selectList == null) ? 0 : selectList.hashCode());
  result = prime * result + ((where == null) ? 0 : where.hashCode());
  return result;
}

@Override
public int hashCode()
{
 int result = intervals.hashCode();
 result = 31 * result + rollup.hashCode();
 result = 31 * result + (queryGranularity != null ? queryGranularity.hashCode() : 0);
 return result;
}

@Override
public int hashCode()
{
 int result = segmentGranularity.hashCode();
 result = 31 * result + queryGranularity.hashCode();
 result = 31 * result + rollup.hashCode();
 result = 31 * result + (inputIntervals != null ? inputIntervals.hashCode() : 0);
 result = 31 * result + (wrappedSpec != null ? wrappedSpec.hashCode() : 0);
 return result;
}

@Override
public int hashCode() {
  int result = description != null ? description.hashCode() : 0;
  result = 31 * result + (content != null ? content.hashCode() : 0);
  result = 31 * result + (required != null ? required.hashCode() : 0);
  result = 31 * result + (extensions != null ? extensions.hashCode() : 0);
  result = 31 * result + ($ref != null ? $ref.hashCode() : 0);
  return result;
}

@Override
public int hashCode() {
  int result = methodName != null ? methodName.hashCode() : 0;
  result = 31 * result + (int) (methodNameHashCod64 ^ (methodNameHashCod64 >>> 32));
  result = 31 * result + (option != null ? option.hashCode() : 0);
  result = 31 * result + (arguments != null ? arguments.hashCode() : 0);
  result = 31 * result + (keep != null ? keep.hashCode() : 0);
  result = 31 * result + (filter != null ? filter.hashCode() : 0);
  result = 31 * result + (over != null ? over.hashCode() : 0);
  result = 31 * result + (overRef != null ? overRef.hashCode() : 0);
  result = 31 * result + (withinGroup != null ? withinGroup.hashCode() : 0);
  result = 31 * result + (ignoreNulls != null ? ignoreNulls.hashCode() : 0);
  return result;
}

@Test
public void nullSafeHashCodeWithBooleanArray() {
  int expected = 31 * 7 + Boolean.TRUE.hashCode();
  expected = 31 * expected + Boolean.FALSE.hashCode();
  boolean[] array = {true, false};
  int actual = ObjectUtils.nullSafeHashCode(array);
  assertEquals(expected, actual);
}

public void testHashCode() {
 assertEquals(Boolean.TRUE.hashCode(), Booleans.hashCode(true));
 assertEquals(Boolean.FALSE.hashCode(), Booleans.hashCode(false));
}

@Test
@Deprecated
public void hashCodeWithBooleanFalse() {
  int expected = Boolean.FALSE.hashCode();
  assertEquals(expected, ObjectUtils.hashCode(false));
}

@Test
@Deprecated
public void hashCodeWithBooleanTrue() {
  int expected = Boolean.TRUE.hashCode();
  assertEquals(expected, ObjectUtils.hashCode(true));
}

@Test
public void testHashCode() {
  final MutableBoolean mutBoolA = new MutableBoolean(false);
  final MutableBoolean mutBoolB = new MutableBoolean(false);
  final MutableBoolean mutBoolC = new MutableBoolean(true);
  assertEquals(mutBoolA.hashCode(), mutBoolA.hashCode());
  assertEquals(mutBoolA.hashCode(), mutBoolB.hashCode());
  assertFalse(mutBoolA.hashCode() == mutBoolC.hashCode());
  assertEquals(mutBoolA.hashCode(), Boolean.FALSE.hashCode());
  assertEquals(mutBoolC.hashCode(), Boolean.TRUE.hashCode());
}