Collection

[Reshma Reddy]

Hi All,
In my application is there two tables i am using list, for that tables and i am getting confuse how to compare the two table elements and i want the elements that are equal in two tables.

Thanks,
vishnu

[Srikanth Basa]

Can you please be more specific on what you are asking and how it is related to servlets ?

[Reshma Reddy]

Hi Srikanth,
i am using spring and hibernate for my application i wrote one DAO for that, by using that i am getting table values.

Thanks,
vishnu

[Ben Souther]

This still doesn't sound like a servlet question.
Moving to Java In General (intermediate) where collections are discussed.

[Tamas Jano]

Still not specific enough but I presume you want the result to contain the rows that match from the two tables.
Take a look at joins, that might be the thing you need.

[Reshma Reddy]

Hi Tamas,
i have to compare in my java class and after that i have to pass this result to for further method.

Thanks,
vishnu.

[Raghavan Muthu]

Do you mean ask how you want to compare two objects which are populated with the values of table row?

[Srikanth Basa]

Not still clear what you are asking for. If you are asking for comparing the elements in two lists and getting the common elements out, here goes the idea

    
public class Test {
 
public static void main(String args[]) {
List list1 = new ArrayList();
list1.add("Element1");
list1.add("Element2");
list1.add("Element3");
list1.add("Element4");
 
List list2 = new ArrayList();
list2.add("Element10");
list2.add("Element2");
list2.add("Element3");
list2.add("Element14");
 
Set commonElements = new HashSet();
 
for (int i = 0; i < list1.size(); i++) {
for (int j = 0; j < list2.size(); j++) {
if (list1.get(i).equals(list2.get(j))) {
commonElements.add(list1.get(i));
}
}
}
 
Iterator iter = commonElements.iterator();
while (iter.hasNext()) {
System.out.println(iter.next());
}
 
}
}

1.4 Compatible

[Reshma Reddy]

Hi Srikanth,
Thanks for giving idea, but in my application persons is there more than lack but this one is the better idea to do comparision or is there any another approach for this.

Thanks,
vishnu