以下实例演示了如何使用 Collections 类的 max() 和 min() 方法来获取List中最大最小值：

/*

 author by w3cschool.cc

 Main.java

 */

import java.util.*;

public class Main {

   public static void main(String[] args) {

      List list = Arrays.asList("one Two three Four five six one three Four".split(" "));

      System.out.println(list);

      System.out.println("最大值: " + Collections.max(list));

      System.out.println("最小值: " + Collections.min(list));

   }

}

以上代码运行输出结果为：

[one, Two, three, Four, five, six, one, three, Four]

最大值: three

最小值: Four

List<Double> input = new ArrayList<Double>();

input.add(2.3);

input.add(3.3);

input.add(4.3);

input.add(5.3);

input.add(6.3);

input.add(7.3);

input.add(8.3);

input.add(9.3);

input.add(1.3);

System.out.println(input);

System.out.println("最大值: " + Collections.max(input));

System.out.println("最小值: " + Collections.min(input));

以上代码运行输出结果为：

[2.3, 3.3, 4.3, 5.3, 6.3, 7.3, 8.3, 9.3, 1.3]

最大值: 9.3

最小值: 1.3

public class MAX {  

    @Test

    public void test() {

        int[] arr={1,2,43,45,6,96,2};

        int max=-1;

        int min=-1;

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

            int temp = arr[i];

            if(i == 0) {

                max = temp;

                min = temp;

            }

            if (temp > max) {

                max = temp;

            }

            if (temp < min) {

                min = temp;

            }

        }

        System.out.println("min is:"+min);

        System.out.println("max is:"+max);

    }  

}