Unlike {@link * #compareTo(BigDecimal) compareTo}, this method considers two * {@code BigDecimal} objects equal only if they are equal in * value and scale (thus 2.0 is not equal to 2.00 when compared by * this method). * 该方法认为两个BigDecimal对象只有在值和比例相等时才相等,所以当...
*/ public class ProductServiceImpl implements ProductService { @Override public Product getProductByCode(String productCode) { //query from DB system, more operation in here if (null == productCode || productCode.trim().isEmpty()) { return null; } else { return new Product("product001","...
doubleValuein classNumber Returns: thedoublevalue represented by this object hashCode public static int hashCode(double value) Returns a hash code for adoublevalue; compatible withDouble.hashCode(). Parameters: value- the value to hash Returns: ...
And there you have it – quick and to the point examples of how to generate both unbounded and bounded values for the most common numerical primitives in Java. 9. Conclusion This tutorial illustrated how we could generate random numbers either bound or unbound, using different techniques and lib...
代码语言:javascript 代码运行次数:0 staticvoidMain(string[]args){MemoryStream stream=newMemoryStream();BinaryWriter writer=newBinaryWriter(stream);double db=double.NaN;writer.Write(db);Console.WriteLine(string.Join(",",stream.ToArray().Select(b=>b.ToString("X2")));stream.Seek(0,SeekOrigin.Begi...
I am trying to use Advogadro's number (6.022*10^23) in a java program and i use BigDecimal variable to store it. However i want to multiply it with an int or a double and still keep the precision, but it throws an error! bad operand types for binary operator '*' first type: do...
haseCode被重写了 public static int hashCode(double value) {long bits = doubleToLongBits(value);return (int)(bits ^ (bits >>> 32));} doubleToLongBits:很多方法中用到了这个方法,理解为将double转换为64位的long即可 根据IEEE 754浮点“双格式”位布局返回指定浮点值的表示。
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intValuein classNumber Returns: thedoublevalue represented by this object converted to typeint SeeThe Java™ Language Specification: 5.1.3 Narrowing Primitive Conversions hashCode public static int hashCode(double value) Returns a hash code for adoublevalue; compatible withDouble.hashCode(). ...
* One might assume that writing {@codenew BigDecimal(0.1)} in * Java creates a {@codeBigDecimal} which is exactly equal to * 0.1 (an unscaled value of 1, with a scale of 1), but it is * actually equal to * 0.1000000000000000055511151231257827021181583404541015625. ...