please i need the code of comparing these two array lists.

[raj reddy]

Hi

There were two arraylists


List al1 = (List) classabc.fetchTicketpanel();
System.out.println("THE LATEST VALUES OF THE TICKET KEY1 IS " + al1 );

List al2 = (List) classabc.fetchDrawresults();
System.out.println("THE LATEST VALUES OF THE TICKET KEY2 IS " + al2 );


Think it as a1,a2,a3,a4,a5 are the elements of al1 and b1,b2,b3,b4,b5,b6,b7,b8,b9,b10.........n number of elements

of al2.


how to compare the elements of these two arraylists.

please i need the code of comparing these two array lists.

[sanjeevtarar]

Hello Raja,

you have already posted this problem then why are you creating duplication.

And other thing is that you have posted again in wrong forum.......IT IS JSP FORUM.



sanjeev

[raj reddy]

hi sanjeev

sorry i have not checked

very very sorry sanjeev for that one

[harivaram]

u can use following code to check two arraylists

import java.util.*;
public class Ex {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ArrayList al1=new ArrayList();
al1.add("a1");
al1.add("a2");
al1.add("a3");
ArrayList al2=new ArrayList();
al2.add("b1");
al2.add("a2");
al2.add("a3");


if(al1.size()==al2.size()){
Object[] o1=al1.toArray();
Object[] o2=al2.toArray();
if(Arrays.equals(o1,o2)){
System.out.println("Both arraylists are equal");
}else{
System.out.println("Both arraylists are not equal");
}
}
else{
System.out.println("Both arraylists are not equal");
}

}

}

[raj reddy]

Hi Harivaram

Thks for your reply

Actually i need to compare the elements of al1,al2.

ie a1,a2,a3,a4,a5 are the elements of al1 and b1,b2,b3,b4,b5,b6,b7,b8,b9,b10.........n number of elements

of al2.

can u give me the code of comparing this two elements of these arraylists

Regards
raja

[Eranga]

A simple way I used to test this. See you can get the logic for your application.

Code:

    public static void main(String[] args) {
        // TODO code application logic here
        ArrayList list1 = new ArrayList();
        list1.add("a1");
        list1.add("a2");
        list1.add("a3");
        
        ArrayList list2 = new ArrayList();
        list2.add("b1");
        list2.add("a2");
        list2.add("a3");
        
        for (int i = 0; i < list1.size(); i++){
        String str1 = (String) list1.get(i);
            for (int j = 0; j < list2.size(); j++){
                String str2 = (String) list2.get(j);
                int result = str1.compareTo(str2);
                if (result == 0) 
                    System.out.println(str1+  " = " + str2);
                else if (result > 0) 
                    System.out.println(str1+  " > " + str2);
                else if (result < 0) 
                    System.out.println(str1+  " < " + str2);
            }
        }
    }