Re: How to get subclass objects in an arraylist?

[Gustavo Felisberto]

I guess the problem IS the fact that the type on elements in the list
not being the correct type.

public class Parent {
    private String parent = "parent";

    public String getParent() {
        return parent;
    }
    public void setParent(String parent) {
        this.parent = parent;
    }
}

public class Child extends Parent{
    private String childName = "child";
    public String getChildName() {
        return childName;
    }
    public void setChildName(String childName) {
        this.childName = childName;
    }
}

If you do:

        List<Parent> list = new ArrayList<Parent>();
        list.add(new Child());
        list.get(0).getChildName();

It will not build, you have to cast the Object to the correct type:
((Child)list.get(0)).getChildName();


Same thing for jsp files.

-- 
Gustavo Felisberto.
WIT-Software, Lda
Coimbra (Portugal), San Jose (California)
Phone: +351239801030
Web: http://www.wit-software.com 

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