在Java中将HashSet转换为TreeSet

首先，创建一个具有字符串值的HashSet-

HashSet<String> hashSet = new HashSet<String>(); hashSet.add("Bradley"); hashSet.add("Katie"); hashSet.add("Brad"); hashSet.add("Amy"); hashSet.add("Ryan"); hashSet.add("Jamie");

现在，将HashSet转换为TreeSet-

Set<String> set = new TreeSet<String>(hashSet);

示例

以下是在Java中将HashSet转换为TreeSet的程序-

import java.util.HashSet; import java.util.Set; import java.util.TreeSet; public class Demo { public static void main(String[] args) { HashSet<String> hashSet = new HashSet<String>(); hashSet.add("Bradley"); hashSet.add("Katie"); hashSet.add("Brad"); hashSet.add("Amy"); hashSet.add("Ryan"); hashSet.add("Jamie"); hashSet.add("Kevin"); hashSet.add("David"); System.out.println("HashSet = "+ hashSet); Set<String> set = new TreeSet<String>(hashSet); System.out.println("TreeSet = "+set); } }

输出结果

HashSet = [Kevin, Jamie, Ryan, Bradley, Katie, David, Brad, Amy] TreeSet = [Amy, Brad, Bradley, David, Jamie, Katie, Kevin, Ryan]