How to get Arraylist in jsp page to render

[jaan bhavsar]

Hi to All,
I am trying to make sample application and cant pass arraylist object on jsp page.
Could any body please guide me regarding to that?

                      
                       while(rs.next())
					{
						Employee emp = new Employee();
						emp.setEmpno(rs.getInt("empno"));
						emp.setEname(rs.getString("ename"));
						emp.setJob(rs.getString("job"));
						emp.setDeptno(rs.getInt("deptno"));
						emp.setComm(rs.getInt("comm"));
						emp.setHiredate(rs.getString("hiredate"));
						emp.setMgr(rs.getInt("mgr"));
						emp.setSal(rs.getInt("sal"));
						emplist.add(emp);
					}  
 

Which will populate my arraylist(emplist) in ListDb class.
I call this method from ListAction.
//code for ListAction

  

public String execute() throws Exception {
		ListDB lb = new ListDB();
		emp  = new ArrayList<Employee>();
		emp = lb.getList();
		System.out.println("Size of list in action-->"+emp.size());
		if(emp.size() > 0)
		{
			
			return SUCCESS;
		}	
		else
			return ERROR;
	}
 

How can i put Arraylist emp in request,and get arraylist object on Jsp page?

[David Newton]

Provide a public getter for the list and it's available in the JSP.

Note that you're creating a new ArrayList then promptly replacing it with another one--you might as well skip the unused constructor call.

I'd also consider doing something different than instantiating the ListDB() directly, although it may not be very important yet--it can impede testability and flexibility, though.

(And is an empty list actually an error? It might be--but if not, maybe a different result name would express intent better?)

public String execute() throws Exception {
    emp = new ListDB().getList();

    if (emp.isEmpty()) {
        return NO_RESULTS;
    }
    
    return SUCCESS;
}