> For the complete documentation index, see [llms.txt](https://heunnajo.gitbook.io/java/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://heunnajo.gitbook.io/java/java.lang-package-and-useful-class/number-class.md).

# Number class

Parent class of all of number wrapper class.

```java
public abstract class Numbr implements java.io.Serializable {
    public abstract int intValue();
    public abstract long longValue();
    public abstract float floatValue();
    public abstract double doubleValue();
    
    public byte byteValue() {
        return (byte)intValue();
    }
    public short shortValue() {
        return (short)intValue();
    }
}
```