Java 實例 - 集合比較
Java 實例以下實例將字串轉換為集合並使用 Collection 類的 Collection.min() 和 Collection.max() 來比較集合中的元素：
Main.java 檔
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<String> set = new TreeSet<String>();
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));
}
}
以上代碼運行輸出結果為：
Penny dime ----------- nickel Quarter