display selective value from VECTOR

[aamchi mumbai]

Hi,

Suppose i have vector
v = new Vector();

v.add("one");
v.add("two");
v.add("three");
v.add("four");

Now i want to display only value "one" and "three". how can i write struts tag do display that value?

is there any documentation where i can get all this information?

Again
Thanks in advance

[Vicky Pandya]

use logic:equal to compare your values.

[aamchi mumbai]

Originally posted by Vicky Pandya:
use logic:equal to compare your values.

what if i dont know the value i just know the index number

[aamchi mumbai]

Anyone knows answer for this

[Merrill Higginson]

Check out the following link on using indexed properties. It explains how to do it:

http://struts.apache.org/faqs/indexedprops.html

[Merrill Higginson]

Most struts tags are designed to work with a javaBean. A Vector is not a javaBean. Therefore, in order to do what you want using struts tags, you will need to embed the Vector in a javaBean. Usually, in Struts applications, you embed the data you're working with in a bean that is a subclass of ActionForm.

If this doesn't fit your model, then don't use Struts tags. Use jstl, or just plain old scriptlets.

Keeping in mind the above explanation, here is some code that will work:

Action form:

public class TestForm extends ActionForm {
private Vector vector;
public Vector getVector() {
return vector;
}
 
public void setVector(Vector vector) {
this.vector = vector;
}
}

Action Class:

TestForm myForm = new TestForm();
Vector v = new Vector();
 
v.add("one");
v.add("two");
v.add("three");
v.add("four");
myForm.setVector(v);
 
request.setAttribute("testForm", myForm);
 

jsp:

<bean:write name="testForm" property="vector[0]" />
<bean:write name="testForm" property="vector[3]" />