JAva設計モード------動作モードのポリシーモード(3)

import java.util.Comparator;
/**
 * Cat       ，   toString()  
 * 
 * @author jesson
 * 
 */
public class Cat implements java.lang.Comparable<Cat> {
	private int height; //   
	private int weight; //   

	//private Comparator comparator = new CatHeightComparator(); //      
	private Comparator<Cat> comparator = new CatWeightComparator(); //      

	public Comparator getComparator() {
		return comparator;
	}

	public void setComparator(Comparator comparator) {
		this.comparator = comparator;
	}

	public Cat(int height, int weight) {
		// TODO Auto-generated constructor stub
		this.height = height;
		this.weight = weight;
	}

	public int getHeight() {
		return height;
	}

	public void setHeight(int height) {
		this.height = height;
	}

	public int getWeight() {
		return weight;
	}

	public void setWeight(int weight) {
		this.weight = weight;
	}

	/**
	 *   toString()  
	 */
	@Override
	public String toString() {
		return this.getHeight() + "|" + this.getWeight();
	}

	/**
	 *   Comparable   compareTO   
	 *               
	 */
	@Override
	public int compareTo(Cat o) {
		return comparator.compare(this, o);
	}
}

import java.util.Comparator;

/**
 * Cat       
 * 
 * @author jesson
 * 
 */
public class CatHeightComparator implements Comparator<Cat> {

	@Override
	public int compare(Cat o1, Cat o2) {
		// TODO Auto-generated method stub
		if (o1.getHeight() > o2.getHeight())
			return 1;
		else if (o1.getHeight() < o2.getHeight())
			return -1;
		else
			return 0;
	}
}

import java.util.Comparator;

/**
 * Cat       
 * 
 * @author jesson
 * 
 */
public class CatWeightComparator implements Comparator<Cat> {

	@Override
	public int compare(Cat o1, Cat o2) {
		// TODO Auto-generated method stub
		if (o1.getWeight() > o2.getWeight())
			return -1;
		else if (o1.getWeight() < o2.getWeight())
			return 1;
		else
			return 0;
	}
}

import java.lang.Comparable;

/**
 *    
 * 
 * @author jesson
 * 
 */
public class DataSorter {

	/**
	 *       
	 * 
	 * @param Cat    
	 */
	public static void bubbleSort(Object[] a) {
		for (int i = a.length - 1; i >= 1; i--) {
			for (int j = 0; j < i; j++) {
				Comparable o1 = (Comparable) a[j];
				Comparable o2 = (Comparable) a[j + 1];
				if (o1.compareTo(o2) == 1) {
					swap(a, j, j + 1);
				}
			}
		}
	}

	/**
	 *       
	 * 
	 * @param a
	 *                
	 */
	public static void bubbleSort(int[] a) {
		for (int i = a.length - 1; i >= 1; i--) {
			for (int j = 0; j < i; j++) {
				if (a[j] > a[j + 1]) {
					swap(a, j, j + 1);
				}
			}
		}
	}

	/**
	 *       
	 * 
	 * @param a
	 *            Object    
	 * @param x
	 *                1
	 * @param y
	 *                2
	 */
	private static void swap(Object[] a, int x, int y) {
		// TODO Auto-generated method stub
		Object temp = a[x];
		a[x] = a[y];
		a[y] = temp;
	}

	/**
	 *       
	 * 
	 * @param a
	 *              
	 * @param x
	 *                1
	 * @param y
	 *                2
	 */
	private static void swap(int[] a, int x, int y) {
		// TODO Auto-generated method stub
		int temp = a[x];
		a[x] = a[y];
		a[y] = temp;
	}

	/**
	 *     
	 * 
	 * @param a
	 *            Object    
	 */
	public static void print(Object[] a) {
		for (int i = 0; i < a.length; i++)
			System.out.print(a[i] + " ");
		System.out.println();
	}

	/**
	 *     
	 * 
	 * @param a
	 *            int    
	 */
	public static void print(int[] a) {
		for (int i = 0; i < a.length; i++)
			System.out.print(a[i] + " ");
		System.out.println();
	}

}

/**
 *    
 * @author jesson
 *
 */
public class Test {
	public static void main(String[] args) {
		//int[] a = new int[]{9,8,2,4,5,6,7};
		Cat[] a = {new Cat(5,5),new Cat(1,1),new Cat(3,3)};
		//Dog[] a = {new Dog(3),new Dog(2),new Dog(6)};
		DataSorter.print(a);
		//DataSorter.bubbleSort(a);
		java.util.Arrays.sort(a);
		DataSorter.print(a);
	}
}