Is it possible to create my own primitive datatype in java. like int, float,double

Question

How to create my own datatype in java, that will accept value range from 0 to 1024.

My declaration would be.

kilobyte a=10;

Is it possible?

Answer 1

No. Java doesn't allow that (ie creating a primitive). But you could create your own class for that.

Answer 2

You cannot create your own primitive, but you could have a wrapper Object for that.

Dirty example here:

// note that class name doesn't follow Java conventions here
public class kilobyte {
    private int number;

    public kilobyte(Number number) {
        if (number == null) {
            throw new IllegalArgumentException("argument is null");
        }
        else if (number.intValue() > 1024 || number.intValue() < 0) {
            throw new IllegalArgumentException("argument not within 0 < x < 1024 range");
        }
        else {
            this.number = number.intValue();
        }
    }
    // TODO getter/setter
}

Answer 3

不，您不能创建自己的原始类型，也不能重载运算符，因此在Java中是不可能的。