Java 实例 - 集合比较
以下实例将字符串转换为集合并使用 Collection 类的 Collection.min() 和 Collection.max() 来比较集合中的元素：
/*
author by phpcodeweb.com
Main.java
*/
import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;
class Main {
public static void main(String[] args) {
String[] coins = { "Penny", "nickel", "dime", "Quarter", "dollar" };
Set set = new TreeSet();
for (int i = 0; i < coins.length; i++)
set.add(coins[i]);
System.out.println(Collections.min(set));
System.out.println(Collections.min(set, String.CASE_INSENSITIVE_ORDER));
for(int i=0;i<=10;i++)
System.out.print("-");
System.out.println("");
System.out.println(Collections.max(set));
System.out.println(Collections.max(set, String.CASE_INSENSITIVE_ORDER));
}
}
以上代码运行输出结果为：
Penny
dime
-----------
nickel
Quarter
