java 使用 for增强对 Map遍历_JAVA_编程开发_程序员俱乐部

class="java" name="code">/**
 * 使用 for增强对 Map遍历
 */
package com.wl.entry;
 
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
 
public class Demo {
    public static void main(String[] args) {
        Student student1=new Student(100,"小明");
        Student student2=new Student(101,"张三");
        Student student3=new Student(102,"李四");
         
        Map<Integer,Student> stus=new HashMap<Integer, Student>();
 
        stus.put(student1.getId(), student1);
        stus.put(student2.getId(), student2);
        stus.put(student3.getId(), student3);
        /**
         * 使用 for增强对 Map遍历
         */
         
        for(Entry<Integer,Student> stu:stus.entrySet()){
            System.out.println(stu.getKey()+","+stu.getValue().getName());
        }
    }
}
 
 
class Student{
    private int id;
    private String name;
    public Student() {
        // TODO Auto-generated constructor stub
    }
    public Student(int id,String name) {
        this.id=id;
        this.name=name;
    }
    public int getId() {
        return id;
    }
    public String getName() {
        return name;
    }
    public void setId(int id) {
        this.id = id;
    }
    public void setName(String name) {
        this.name = name;
    }
     
}

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