doublerange.java

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    public long getMinimumLong() {
        return (long) min;
    }

    /**
     * <p>Gets the minimum number in this range as a <code>int</code>.</p>
     * 
     * <p>This conversion can lose information for large values or decimals.</p>
     *
     * @return the minimum number in this range
     */
    public int getMinimumInteger() {
        return (int) min;
    }

    /**
     * <p>Gets the minimum number in this range as a <code>double</code>.</p>
     *
     * @return the minimum number in this range
     */
    public double getMinimumDouble() {
        return min;
    }

    /**
     * <p>Gets the minimum number in this range as a <code>float</code>.</p>
     * 
     * <p>This conversion can lose information for large values.</p>
     *
     * @return the minimum number in this range
     */
    public float getMinimumFloat() {
        return (float) min;
    }

    /**
     * <p>Returns the maximum number in this range.</p>
     *
     * @return the maximum number in this range
     */
    public Number getMaximumNumber() {
        if (maxObject == null) {
            maxObject = new Double(max);            
        }
        return maxObject;
    }

    /**
     * <p>Gets the maximum number in this range as a <code>long</code>.</p>
     * 
     * <p>This conversion can lose information for large values or decimals.</p>
     *
     * @return the maximum number in this range
     */
    public long getMaximumLong() {
        return (long) max;
    }

    /**
     * <p>Gets the maximum number in this range as a <code>int</code>.</p>
     * 
     * <p>This conversion can lose information for large values or decimals.</p>
     *
     * @return the maximum number in this range
     */
    public int getMaximumInteger() {
        return (int) max;
    }

    /**
     * <p>Gets the maximum number in this range as a <code>double</code>.</p>
     *
     * @return the maximum number in this range
     */
    public double getMaximumDouble() {
        return max;
    }

    /**
     * <p>Gets the maximum number in this range as a <code>float</code>.</p>
     * 
     * <p>This conversion can lose information for large values.</p>
     *
     * @return the maximum number in this range
     */
    public float getMaximumFloat() {
        return (float) max;
    }

    // Tests
    //--------------------------------------------------------------------
    
    /**
     * <p>Tests whether the specified <code>number</code> occurs within
     * this range using <code>double</code> comparison.</p>
     * 
     * <p><code>null</code> is handled and returns <code>false</code>.</p>
     *
     * @param number  the number to test, may be <code>null</code>
     * @return <code>true</code> if the specified number occurs within this range
     */
    public boolean containsNumber(Number number) {
        if (number == null) {
            return false;
        }
        return containsDouble(number.doubleValue());
    }

    /**
     * <p>Tests whether the specified <code>double</code> occurs within
     * this range using <code>double</code> comparison.</p>
     * 
     * <p>This implementation overrides the superclass for performance as it is
     * the most common case.</p>
     * 
     * @param value  the double to test
     * @return <code>true</code> if the specified number occurs within this
     *  range by <code>double</code> comparison
     */
    public boolean containsDouble(double value) {
        return (value >= min && value <= max);
    }

    // Range tests
    //--------------------------------------------------------------------

    /**
     * <p>Tests whether the specified range occurs entirely within this range
     * using <code>double</code> comparison.</p>
     * 
     * <p><code>null</code> is handled and returns <code>false</code>.</p>
     *
     * @param range  the range to test, may be <code>null</code>
     * @return <code>true</code> if the specified range occurs entirely within this range
     * @throws IllegalArgumentException if the range is not of this type
     */
    public boolean containsRange(Range range) {
        if (range == null) {
            return false;
        }
        return containsDouble(range.getMinimumDouble())
            && containsDouble(range.getMaximumDouble());
    }

    /**
     * <p>Tests whether the specified range overlaps with this range
     * using <code>double</code> comparison.</p>
     * 
     * <p><code>null</code> is handled and returns <code>false</code>.</p>
     *
     * @param range  the range to test, may be <code>null</code>
     * @return <code>true</code> if the specified range overlaps with this range
     */
    public boolean overlapsRange(Range range) {
        if (range == null) {
            return false;
        }
        return range.containsDouble(min)
            || range.containsDouble(max)
            || containsDouble(range.getMinimumDouble());
    }

    // Basics
    //--------------------------------------------------------------------

    /**
     * <p>Compares this range to another object to test if they are equal.</p>.
     * 
     * <p>To be equal, the class, minimum and maximum must be equal.</p>
     *
     * @param obj the reference object with which to compare
     * @return <code>true</code> if this object is equal
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (obj instanceof DoubleRange == false) {
            return false;
        }
        DoubleRange range = (DoubleRange) obj;
        return (Double.doubleToLongBits(min) == Double.doubleToLongBits(range.min) &&
                Double.doubleToLongBits(max) == Double.doubleToLongBits(range.max));
    }

    /**
     * <p>Gets a hashCode for the range.</p>
     *
     * @return a hash code value for this object
     */
    public int hashCode() {
        if (hashCode == 0) {
            hashCode = 17;
            hashCode = 37 * hashCode + getClass().hashCode();
            long lng = Double.doubleToLongBits(min);
            hashCode = 37 * hashCode + ((int) (lng ^ (lng >> 32)));
            lng = Double.doubleToLongBits(max);
            hashCode = 37 * hashCode + ((int) (lng ^ (lng >> 32)));
        }
        return hashCode;
    }

    /**
     * <p>Gets the range as a <code>String</code>.</p>
     *
     * <p>The format of the String is 'Range[<i>min</i>,<i>max</i>]'.</p>
     *
     * @return the <code>String</code> representation of this range
     */
    public String toString() {
        if (toString == null) {
            StringBuffer buf = new StringBuffer(32);
            buf.append("Range[");
            buf.append(min);
            buf.append(',');
            buf.append(max);
            buf.append(']');
            toString = buf.toString();
        }
        return toString;
    }

}