How to use

hashCode

method

in

java.lang.String

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

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

@Override
public int hashCode() {
  int result = this.beanName.hashCode();
  result = 29 * result + (this.toParent ? 1 : 0);
  return result;
}

@Override
public int hashCode() {
  int result = 27;
  for (String pattern : this.patterns) {
    result = 13 * result + pattern.hashCode();
  }
  for (String excludedPattern : this.excludedPatterns) {
    result = 13 * result + excludedPattern.hashCode();
  }
  return result;
}

/**
 * This implementation returns the hash code of the underlying description String.
 */
@Override
public int hashCode() {
  return this.description.hashCode();
}

/**
 * This implementation returns the hash code of the underlying
 * class path location.
 */
@Override
public int hashCode() {
  return this.path.hashCode();
}

final TelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(Context.TELEPHONY_SERVICE);
 final String tmDevice, tmSerial, androidId;
 tmDevice = "" + tm.getDeviceId();
 tmSerial = "" + tm.getSimSerialNumber();
 androidId = "" + android.provider.Settings.Secure.getString(getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);
 UUID deviceUuid = new UUID(androidId.hashCode(), ((long)tmDevice.hashCode() << 32) | tmSerial.hashCode());
 String deviceId = deviceUuid.toString();

@Override public int hashCode() {
 int result = 29;
 result = 31 * result + scheme.hashCode();
 result = 31 * result + authParams.hashCode();
 return result;
}

@Override public int hashCode() {
 int result = 17;
 result = 31 * result + pattern.hashCode();
 result = 31 * result + hashAlgorithm.hashCode();
 result = 31 * result + hash.hashCode();
 return result;
}

@Override
public int hashCode() {
 return name.hashCode()
   ^ Integer.rotateLeft(descriptor.hashCode(), 8)
   ^ Integer.rotateLeft(bootstrapMethod.hashCode(), 16)
   ^ Integer.rotateLeft(Arrays.hashCode(bootstrapMethodArguments), 24);
}

/**
 * This implementation returns {@code toString()}'s hash code.
 * @see #toString()
 */
@Override
public int hashCode() {
  return toString().hashCode();
}

@Override
public int hashCode() {
  int hashCode = this.beanDefinition.hashCode();
  hashCode = 29 * hashCode + this.beanName.hashCode();
  hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.aliases);
  return hashCode;
}

  @Override
  public int hashCode() {
    int result = this.foo.hashCode();
    result = 31 * result + this.bar.hashCode();
    return result;
  }
}

/**
 * Generate a unique hash code for all properties of this
 * {@code WebMergedContextConfiguration} excluding the
 * {@linkplain #getTestClass() test class}.
 */
@Override
public int hashCode() {
  return super.hashCode() * 31 + this.resourceBasePath.hashCode();
}

@Override
public Integer apply(Integer t1) {
  // be slow ... but faster than Thread.sleep(1)
  String t = "";
  int s = sink;
  for (int i = 2000; i >= 0; i--) {
    t = String.valueOf(i + t.hashCode() + s);
  }
  sink = t.hashCode();
  return t1;
}

@Override
public int hashCode() {
 onHashCode.run();
 return delegateString.hashCode();
}

@Override
public int hashCode() {
 onHashCode.run();
 return delegateString.hashCode();
}

@Override
public int hashCode() {
 onHashCode.run();
 return delegateString.hashCode();
}

@Override
public int hashCode() {
 onHashCode.run();
 return delegateString.hashCode();
}

@Test
public void nullSafeHashCodeWithObjectArray() {
  int expected = 31 * 7 + "Leia".hashCode();
  expected = 31 * expected + "Han".hashCode();
  Object[] array = {"Leia", "Han"};
  int actual = ObjectUtils.nullSafeHashCode(array);
  assertEquals(expected, actual);
}