Java泛型比较大小

package cn.zzx.than;

/**
 * 泛型类
 * 
 *
 * @param 
 */
public class Than {
	private T max; // 最大值
	private T min; // 最小值

	/**
	 * max的属性
	 * 
	 * @return
	 */
	public T getMax() {
		return max;
	}

	public void setMax(T max) {
		this.max = max;
	}

	/**
	 * min的属性
	 * 
	 * @return
	 */

	public T getMin() {
		return min;
	}

	public void setMin(T min) {
		this.min = min;
	}

	/**
	 * 构造方法并重载
	 */
	public Than() {
		super();
	}

	public Than(T max, T min) {
		super();
		this.max = max;
		this.min = min;
	}

	/**
	 * 调用toString方法
	 */

	public String toString() {
		return "Than [max=" + max + ", min=" + min + "]";
	}

}

package cn.zzx.than;

public class Calc {
	/**
	 * 泛型方法
	 *在泛型 extends是实现接口也可以是继承，extends Comparable在这里是指接口
	 *泛型中,extends并不代表继承，它是类型范围限制
	 */
	public static  Than maxmin(T nums[]) {
		T mMax = nums[0];            //初始值
    
		T mMin = nums[0];            //初始值

		for (int i = 1; i < nums.length; i++) {
			if (mMax.compareTo(nums[i]) < 0) {      //mMax大于nums[i]
				mMax = nums[i];
			}

			if (mMin.compareTo(nums[i]) > 0) {       //mMin小于nums[i]
				mMin = nums[i];
			}

		}
		return new Than(mMax, mMin);                //返回初始值
	}

}

package cn.zzx.than;
/**
 * 
 * 泛型要用包装（封装）类型
 *
 */

public class Test {
	public static void main(String[] args) {
		Integer[] a = { 22, 33, 45, 11, 12, 10 };  
		Than result = Calc.maxmin(a);
		System.out.println("最大值:" + result.getMax() + "\t最小值:" + result.getMin());
		
		String[] b = {"aa","bb","dd","AA","BB","DD","a","b"};
		Than result2 = Calc.maxmin(b);
		System.out.println("最大值:" + result2.getMax().toString() + "\t最小值:" + result2.getMin().toString());
		System.out.println(result2);
	}

}