根据学员英文名找到学员对象

2019/02/22 19:18
阅读数 11

学生类代码:

package com.collections;

public class Student {
    private String name;
    private char sex;

    public Student(){}

    public Student(String name,char sex){
        this.name = name;
        this.sex = sex;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public char getSex() {
        return sex;
    }

    public void setSex(char sex) {
        this.sex = sex;
    }


}

测试类代码:

package com.collections;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class Test {
    public static void main(String[] args) {
        Student s1 = new Student("张三",'男');
        Student s2 = new Student("李四",'女');
        Student s3 = new Student("王五",'男');

        Map<String, Student> m = new HashMap<String, Student>();

        m.put("zhangsan", s1);
        m.put("lisi",s2);
        m.put("wangwu",s3);

        Set<String> s = m.keySet();

        for(String str : s){
            Student stu = m.get(str);
            System.out.println(str+"对应学员的姓名是:"+stu.getName()+";性别是:"+stu.getSex());
        }
    }
}

运行结果:

 

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