negatenumber.java

来自「java 的源代码」· Java 代码 · 共 39 行

package com.reddragon2046.base.utilities.data.functions;

import com.reddragon2046.base.utilities.data.UnaryFunction;

// Referenced classes of package com.reddragon2046.base.utilities.data.functions:
//            NumberHelper

public final class NegateNumber
    implements UnaryFunction
{

    public NegateNumber()
    {
        mode = java.lang.Integer.class;
    }

    public NegateNumber(Class discriminator)
    {
        if(!(java.lang.Number.class).isAssignableFrom(discriminator))
        {
            throw new IllegalArgumentException("discriminator must be an instance of java.lang.Number");
        } else
        {
            mode = discriminator;
            return;
        }
    }

    public Object execute(Object object)
    {
        return NumberHelper.minus(zero, (Number)object, mode);
    }

    private Class mode;
    private static Integer zero = new Integer(0);
    static final long serialVersionUID = 0x9fb01d8d63173c5fL;

}