遍历Java中TreeMap的值
使用Iterator及其values()方法迭代TreeMap的值。
让我们首先创建一个TreeMap并添加一些元素-
TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"PHP"); m.put(2,"jQuery"); m.put(3,"JavaScript"); m.put(4,"Ruby"); m.put(5,"Java"); m.put(6,"AngularJS"); m.put(7,"ExpressJS");
遍历值-
Collection res = m.values();
Iterator i = res.iterator();
while (i.hasNext()) {
System.out.println(i.next());
}以下是迭代值的完整示例-
示例
import java.util.*;
public class Demo {
public static void main(String args[]) {
TreeMap<Integer,String> m = new TreeMap<Integer,String>();
m.put(1,"PHP");
m.put(2,"jQuery");
m.put(3,"JavaScript");
m.put(4,"Ruby");
m.put(5,"Java");
m.put(6,"AngularJS");
m.put(7,"ExpressJS");
System.out.println("TreeMap Elements...");
Collection res = m.values();
Iterator i = res.iterator();
while (i.hasNext()) {
System.out.println(i.next());
}
}
}输出结果
TreeMap Elements... PHP jQuery JavaScript Ruby Java AngularJS ExpressJS