Java doublevalue number lang

The abstract class Number is the superclass of platform classes representing numeric values that are convertible to the primitive types byte , double , float , int , long , and short . The specific semantics of the conversion from the numeric value of a particular Number implementation to a given primitive type is defined by the Number implementation in question. For platform classes, the conversion is often analogous to a narrowing primitive conversion or a widening primitive conversion as defining in The Java™ Language Specification for converting between primitive types. Therefore, conversions may lose information about the overall magnitude of a numeric value, may lose precision, and may even return a result of a different sign than the input. See the documentation of a given Number implementation for conversion details.

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Number

Method Detail

intValue

public abstract int intValue()

longValue

public abstract long longValue()

floatValue

public abstract float floatValue()

doubleValue

public abstract double doubleValue()

byteValue

Returns the value of the specified number as a byte , which may involve rounding or truncation. This implementation returns the result of intValue() cast to a byte .

shortValue

Returns the value of the specified number as a short , which may involve rounding or truncation. This implementation returns the result of intValue() cast to a short .

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2023, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

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Class Number

The abstract class Number is the superclass of platform classes representing numeric values that are convertible to the primitive types byte , double , float , int , long , and short . The specific semantics of the conversion from the numeric value of a particular Number implementation to a given primitive type is defined by the Number implementation in question. For platform classes, the conversion is often analogous to a narrowing primitive conversion or a widening primitive conversion as defined in The Java Language Specification for converting between primitive types. Therefore, conversions may lose information about the overall magnitude of a numeric value, may lose precision, and may even return a result of a different sign than the input. See the documentation of a given Number implementation for conversion details.

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Constructor Details

Number

Method Details

intValue

longValue

floatValue

doubleValue

byteValue

shortValue

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples. Other versions.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

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