dummycart.java

这是一些经典的jsp实例教程上的代码

package sessions;
import java.util.Vector;
import java.util.Enumeration;
public class DummyCart {
    Vector v = new Vector();
    String submit = null;
    String item = null;
    private void addItem(String name) {
		v.addElement(name);
    }
    private void removeItem(String name) {
		v.removeElement(name);
    }
    public void setItem(String name) {
		item = name;
    }
    public void setSubmit(String s) {
		submit = s;
    }
    public String[] getItems() {
		String[] s = new String[v.size()];
		v.copyInto(s);
		return s;
    }
    public void processRequest() {
		if (submit.equals("add"))
		    addItem(item);
		else if (submit.equals("remove")) 
		    removeItem(item);	
		// reset at the end of the request
		reset();
    }
    // reset
    private void reset() {
		submit = null;
		item = null;
    }
}