定义一个员工类 public class Employee { private String name ; private String ags ; public void setName ( String name ) { this . name = name ; } public String getName () { return name ; } public void setAgs ( String ags ) { this . ags
定义一个员工类
public class Employee {private String name;
private String ags;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setAgs(String ags) {
this.ags = ags;
}
public String getAgs() {
return ags;
}
}
定义测试类
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
//map中泛型的使用
public class test74 {
public static void main(String[] args){
Map<String, Set<Employee>> map=new HashMap<String,Set<Employee>>();
//创建员工对象
Employee emp0=new Employee();
emp0.setName("李小龙");
Employee emp1=new Employee();
emp1.setName("梁小龙");
Set<Employee> empSet=new HashSet<>();
empSet.add(emp0);
empSet.add(emp1);
map.put("emps",empSet);
Set<Employee> empSet2=map.get("emps");
for(Employee emp:empSet2){
System.out.println(emp.getName());
}
}
}