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JCalendar is a Java date chooser bean for graphically picking a date. JCalendar is composed of several other Java beans, a JDayChooser, a JMonthChooser and a JYearChooser. All these beans have a locale property, provide several icons (Color 16x16, Color 32x32, Mono 16x16 and Mono 32x32) and their own locale property editor. So they can easily be used in GUI builders. Also part of the package is a JDateChooser, a bean composed of an IDateEditor (for direct date editing) and a button for opening a JCalendar for selecting the date.

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package com.toedter.calendar.demo;

import java.awt.Color;
import java.util.Calendar;
import java.util.Date;

import com.toedter.calendar.IDateEvaluator;

public class TestDateEvaluator implements IDateEvaluator {

	private Calendar calendar = Calendar.getInstance();
	private Calendar calendar2 = Calendar.getInstance();
	private Color darkGreen = new Color(0x007F00);
	private Color lightGreen = new Color(0xbbebc8);
	private Color darkRed = new Color(0xa60007);
	private Color lightRed = new Color(0xffb1b5);

	public boolean isSpecial(Date date) {
		calendar2.setTime(date);
		for (int i = 2; i < 5; i++) {
			if (calendar.get(Calendar.MONTH) == calendar2.get(Calendar.MONTH)
					&& calendar.get(Calendar.DAY_OF_MONTH) == calendar2
							.get(Calendar.DAY_OF_MONTH) + i) {
				return true;
			}
		}
		return false;
	}

	public Color getSpecialForegroundColor() {
		return darkGreen;
	}

	public Color getSpecialBackroundColor() {
		return lightGreen;
	}

	public String getSpecialTooltip() {
		return "Special Day!";
	}

	public boolean isInvalid(Date date) {
		calendar2.setTime(date);
		for (int i = 4; i < 6; i++) {
			if (calendar.get(Calendar.MONTH) == calendar2.get(Calendar.MONTH)
					&& calendar.get(Calendar.DAY_OF_MONTH) == calendar2
					.get(Calendar.DAY_OF_MONTH) + i) {
				return true;
			}
		}
		return false;
	}
	
	public Color getInvalidForegroundColor() {
		return darkRed;
	}

	public Color getInvalidBackroundColor() {
		return null;
	}

	public String getInvalidTooltip() {
		return "You cannot select this date...";
	}


}