java 取出int数组中的最大值及下标，取出集合中最大值 ，最小值

package index;

//取出int数组中的最大值及下标
import java.util.Arrays;

import javax.naming.InitialContext;

public class Test {

	public static void main(String[] args) {
		int[] arr = { 0, 45, 14, 85, 12, 14, 7, 25, 85, 14, 555, 111, 222, 51, 785, 2, 36 };

		int max = 0;
		int maxIndex = 0;

		for (int i = 0; i < arr.length; i++) {

			if (arr[i] > max) {
				max = arr[i];
				maxIndex = i;
			}
		}
		System.out.println(max + "----" + maxIndex);

		
	}

	
}

//取出集合中最大值 ，最小值 
public static void main(String args[]) 
     {        //Double[] num = { 45.1,45.2 };
              List dlist=new ArrayList();
              dlist.add(45.1);
              dlist.add(45.2);
              dlist.add(110.22);
              Double max = (Double)dlist.get(0);     
              Double min = (Double)dlist.get(0); 
            for (int i = 0; i < dlist.size(); i++) {          
                      if (min > (Double)dlist.get(i)) min = (Double)dlist.get(i);   
                       if (max < (Double)dlist.get(i)) max = (Double)dlist.get(i);        
               }        
                        System.out.println("max的值为" + max + "min的值为" + min);    
      }