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);   
    }  
      
}