检查两个集合是否包含相同的元素（独立于顺序）的方法？

假设我有两个不同的哈希集，如下所示，我如何检查两个哈希集是否包含相同的元素，并且这两个哈希集是否相等，与集合中元素的顺序无关，请告知..！！

Set set1=new HashSet();
          set.add(new Emp("Ram","Trainer",34000));
          set.add(new Emp("LalRam","Trainer",34000));

另一个是..

Set set2=new HashSet();
          set.add(new Emp("LalRam","Trainer",34000));
          set.add(new Emp("Ram","Trainer",34000));

员工pojo是...

class Emp //implements Comparable
{
      String name,job;
      public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getJob() {
        return job;
    }
    public void setJob(String job) {
        this.job = job;
    }
    public int getSalary() {
        return salary;
    }
    public void setSalary(int salary) {
        this.salary = salary;
    }
    int salary;
      public Emp(String n,String j,int sal)
      {
         name=n;
         job=j;
         salary=sal;
       }
      public void display()
      {
        System.out.println(name+"\t"+job+"\t"+salary);
       }



  public boolean equals(Object o)
      {

         Emp p=(Emp)o;
          return this.name.equals(p.name)&&this.job.equals(p.job) &&this.salary==p.salary;
       }
   public int hashCode()
       {
          return name.hashCode()+job.hashCode()+salary;
       }


      /* public int compareTo(Object o)
       {
          Emp e=(Emp)o;
          return this.name.compareTo(e.name);
           //return this.job.compareTo(e.job);
        //   return this.salary-e.salary;

        }*/
}