java.lang.Integer.doubleValue()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.lang.Integer.doubleValue()方法的一些代码示例，展示了Integer.doubleValue()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Integer.doubleValue()方法的具体详情如下：
包路径：java.lang.Integer
类名称：Integer
方法名：doubleValue

Integer.doubleValue介绍

[英]Returns the value of this Integer as a double.
[中]以双精度形式返回此整数的值。

代码示例

代码示例来源：origin: jfinal/jfinal

  1. public Double toDouble(Integer self) {
  2.   return self.doubleValue();
  3. }

代码示例来源：origin: apache/incubator-pinot

  1. @Override
  2. public Double toDouble(Object value) {
  3.  return ((Integer) value).doubleValue();
  4. }

代码示例来源：origin: stackoverflow.com

  1. private double calculateAverage(List <Integer> marks) {
  2.  Integer sum = 0;
  3.  if(!marks.isEmpty()) {
  4.   for (Integer mark : marks) {
  5.     sum += mark;
  6.   }
  7.   return sum.doubleValue() / marks.size();
  8.  }
  9.  return sum;
  10. }

代码示例来源：origin: apache/storm

  1. public MeanReducerState reduce(MeanReducerState acc, Object input) {
  2.   acc.count++;
  3.   if (input instanceof Double) {
  4.     acc.sum += (Double) input;
  5.   } else if (input instanceof Long) {
  6.     acc.sum += ((Long) input).doubleValue();
  7.   } else if (input instanceof Integer) {
  8.     acc.sum += ((Integer) input).doubleValue();
  9.   } else {
  10.     throw new RuntimeException(
  11.       "MeanReducer::reduce called with unsupported input type `" + input.getClass()
  12.       + "`. Supported types are Double, Long, Integer.");
  13.   }
  14.   return acc;
  15. }

代码示例来源：origin: alibaba/jstorm

  1. public MeanReducerState reduce(MeanReducerState acc, Object input) {
  2.   acc.count++;
  3.   if (input instanceof Double) {
  4.     acc.sum += (Double) input;
  5.   } else if (input instanceof Long) {
  6.     acc.sum += ((Long) input).doubleValue();
  7.   } else if (input instanceof Integer) {
  8.     acc.sum += ((Integer) input).doubleValue();
  9.   } else {
  10.     throw new RuntimeException("MeanReducer::reduce called with unsupported input type `" + input.getClass()
  11.         + "`. Supported types are Double, Long, Integer.");
  12.   }
  13.   return acc;
  14. }

代码示例来源：origin: debezium/debezium

  1. public static Number add(Integer first, double second) {
  2.   double sum = first.doubleValue() + second;
  3.   if (Float.MAX_VALUE >= sum && Float.MIN_VALUE <= sum) return Float.valueOf((float) sum);
  4.   return Double.valueOf(sum);
  5. }

代码示例来源：origin: aNNiMON/Lightweight-Stream-API

  1. @Override
  2.   public double applyAsDouble(Integer t) {
  3.     return t.doubleValue();
  4.   }
  5. };

代码示例来源：origin: aNNiMON/Lightweight-Stream-API

  1. @Override
  2.   public Double apply(Integer t) {
  3.     return t.doubleValue();
  4.   }
  5. }));

代码示例来源：origin: apache/flink

  1. @Override
  2.   public List<Double> initializeBroadcastVariable(Iterable<Integer> data) {
  3.     List<Double> list = new ArrayList<>();
  4.     for (Integer i : data) {
  5.       list.add(i.doubleValue());
  6.     }
  7.     return list;
  8.   }
  9. }

代码示例来源：origin: hibernate/hibernate-orm

  1. public Integer getTimeout(String queryName) {
  2.   Integer timeout = getInteger( queryName, QueryHints.TIMEOUT_JPA );
  3.   if ( timeout != null ) {
  4.     // convert milliseconds to seconds
  5.     timeout = (int) Math.round( timeout.doubleValue() / 1000.0 );
  6.   }
  7.   else {
  8.     // timeout is already in seconds
  9.     timeout = getInteger( queryName, QueryHints.TIMEOUT_HIBERNATE );
  10.   }
  11.   return timeout;
  12. }

代码示例来源：origin: SonarSource/sonarqube

  1. FakeMeasure(@Nullable Integer value) {
  2.  this.value = value == null ? null : value.doubleValue();
  3.  this.valueType = Metric.ValueType.INT;
  4. }

代码示例来源：origin: goldmansachs/gs-collections

  1. @Override
  2. public double getDoubleValue()
  3. {
  4.   return Integer.valueOf(this.i).doubleValue();
  5. }

代码示例来源：origin: org.codehaus.groovy/groovy

  1. public final Object call(Object receiver, Object arg) throws Throwable {
  2.     try {
  3.       if (checkCall(receiver, arg)) {
  4.         return ((Integer) receiver).doubleValue() / ((Float) arg).doubleValue();
  5.       }
  6.     }
  7.     catch (ClassCastException e) {//
  8.     }
  9.     return super.call(receiver, arg);
  10.   }
  11. }

代码示例来源：origin: org.codehaus.groovy/groovy

  1. public final Object call(Object receiver, Object arg) throws Throwable {
  2.     try {
  3.       if (checkCall(receiver, arg)) {
  4.         return ((Integer) receiver).doubleValue() * ((Float) arg).doubleValue();
  5.       }
  6.     }
  7.     catch (ClassCastException e) {//
  8.     }
  9.     return super.call(receiver, arg);
  10.   }
  11. }

代码示例来源：origin: apache/hive

  1. @Override
  2.  protected Ratio getRatio() {
  3.   Integer numValue = numerator.getValue();
  4.   Integer denomValue = denominator.getValue();
  5.   if(numValue != null && denomValue != null) {
  6.    return Ratio.of(numValue.doubleValue(), denomValue.doubleValue());
  7.   }
  8.   return Ratio.of(0d,0d);
  9.  }
  10. }

代码示例来源：origin: apache/kylin

  1. @Override
  2.   protected Ratio getRatio() {
  3.     Integer numValue = numerator.getValue();
  4.     Integer denomValue = denominator.getValue();
  5.     if (numValue != null && denomValue != null) {
  6.       return Ratio.of(numValue.doubleValue(), denomValue.doubleValue());
  7.     }
  8.     return Ratio.of(0d, 0d);
  9.   }
  10. }

代码示例来源：origin: org.codehaus.groovy/groovy

  1. public final Object call(Object receiver, Object arg) throws Throwable {
  2.     try {
  3.       if (checkCall(receiver, arg)) {
  4.         return ((Integer) receiver).doubleValue() * (Double) arg;
  5.       }
  6.     }
  7.     catch (ClassCastException e) {//
  8.     }
  9.     return super.call(receiver, arg);
  10.   }
  11. }

代码示例来源：origin: SonarSource/sonarqube

  1. static FakeMeasure newFakeMeasureOnLeak(@Nullable Integer value) {
  2.  FakeMeasure that = new FakeMeasure();
  3.  that.leakValue = value == null ? null : value.doubleValue();
  4.  that.valueType = Metric.ValueType.INT;
  5.  return that;
  6. }

代码示例来源：origin: prestodb/presto

  1. @Test
  2. public void testBinaryOperatorsDoubleIntegral()
  3.     throws Exception
  4. {
  5.   for (Double left : doubleLefts) {
  6.     for (Integer right : intRights) {
  7.       assertExecute(generateExpression("CAST(%s as DOUBLE) = %s", left, right), BOOLEAN, left == null || right == null ? null : left == (double) right);
  8.       assertExecute(generateExpression("CAST(%s as DOUBLE) <> %s", left, right), BOOLEAN, left == null || right == null ? null : left != (double) right);
  9.       assertExecute(generateExpression("CAST(%s as DOUBLE) > %s", left, right), BOOLEAN, left == null || right == null ? null : left > (double) right);
  10.       assertExecute(generateExpression("CAST(%s as DOUBLE) < %s", left, right), BOOLEAN, left == null || right == null ? null : left < (double) right);
  11.       assertExecute(generateExpression("CAST(%s as DOUBLE) >= %s", left, right), BOOLEAN, left == null || right == null ? null : left >= (double) right);
  12.       assertExecute(generateExpression("CAST(%s as DOUBLE) <= %s", left, right), BOOLEAN, left == null || right == null ? null : left <= (double) right);
  13.       assertExecute(generateExpression("nullif(CAST(%s as DOUBLE), %s)", left, right), DOUBLE, nullIf(left, right));
  14.       assertExecute(generateExpression("CAST(%s as DOUBLE) is distinct from %s", left, right), BOOLEAN, !Objects.equals(left, right == null ? null : right.doubleValue()));
  15.       assertExecute(generateExpression("CAST(%s as DOUBLE) + %s", left, right), DOUBLE, left == null || right == null ? null : left + right);
  16.       assertExecute(generateExpression("CAST(%s as DOUBLE) - %s", left, right), DOUBLE, left == null || right == null ? null : left - right);
  17.       assertExecute(generateExpression("CAST(%s as DOUBLE) * %s", left, right), DOUBLE, left == null || right == null ? null : left * right);
  18.       assertExecute(generateExpression("CAST(%s as DOUBLE) / %s", left, right), DOUBLE, left == null || right == null ? null : left / right);
  19.       assertExecute(generateExpression("CAST(%s as DOUBLE) %% %s", left, right), DOUBLE, left == null || right == null ? null : left % right);
  20.     }
  21.   }
  22.   Futures.allAsList(futures).get();
  23. }

代码示例来源：origin: prestodb/presto

  1. @Test
  2. public void testBinaryOperatorsIntegralDouble()
  3.     throws Exception
  4. {
  5.   for (Integer left : intLefts) {
  6.     for (Double right : doubleRights) {
  7.       assertExecute(generateExpression("%s = %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left == right);
  8.       assertExecute(generateExpression("%s <> %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left != right);
  9.       assertExecute(generateExpression("%s > %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left > right);
  10.       assertExecute(generateExpression("%s < %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left < right);
  11.       assertExecute(generateExpression("%s >= %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left >= right);
  12.       assertExecute(generateExpression("%s <= %s", left, right), BOOLEAN, left == null || right == null ? null : (double) left <= right);
  13.       Object expectedNullIf = nullIf(left, right);
  14.       for (String expression : generateExpression("nullif(%s, CAST(%s as DOUBLE))", left, right)) {
  15.         functionAssertions.assertFunction(expression, INTEGER, expectedNullIf);
  16.       }
  17.       assertExecute(generateExpression("%s is distinct from %s", left, right), BOOLEAN, !Objects.equals(left == null ? null : left.doubleValue(), right));
  18.       assertExecute(generateExpression("%s + %s", left, right), DOUBLE, left == null || right == null ? null : left + right);
  19.       assertExecute(generateExpression("%s - %s", left, right), DOUBLE, left == null || right == null ? null : left - right);
  20.       assertExecute(generateExpression("%s * %s", left, right), DOUBLE, left == null || right == null ? null : left * right);
  21.       assertExecute(generateExpression("%s / %s", left, right), DOUBLE, left == null || right == null ? null : left / right);
  22.       assertExecute(generateExpression("%s %% %s", left, right), DOUBLE, left == null || right == null ? null : left % right);
  23.     }
  24.   }
  25.   Futures.allAsList(futures).get();
  26. }

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