How to remove duplicate objects in a List without equals/hashcode?

Question

I have to remove duplicated objects in a List. It is a List from the object Blog that looks like this:

public class Blog {
    private String title;
    priv         


        

Answer 1

First override equals() method:

@Override
public boolean equals(Object obj)
{
    if(obj == null) return false;
    else if(obj instanceof MyObject && getTitle() == obj.getTitle() && getAuthor() == obj.getAuthor() && getURL() == obj.getURL() && getDescription() == obj.getDescription()) return true;
    else return false;
}

and then use:

List list = new ArrayList;
for(MyObject obj1 : list)
{
    for(MyObject obj2 : list)
    {
        if(obj1.equals(obj2)) list.remove(obj1); // or list.remove(obj2);
    }
}