How to loop / iterate a List in Java
Here i show you four ways to loop a List in Java.
- Iterator loop
- For loop
- For loop (Adcance)
- While loop
package com.mkyong.core; import java.util.Arrays; import java.util.Iterator; import java.util.List; public class ArrayToList { public static void main(String[] argv) { String sArray[] = new String[] { "Array 1", "Array 2", "Array 3" }; // convert array to list List<String> lList = Arrays.asList(sArray); // iterator loop System.out.println("#1 iterator"); Iterator<String> iterator = lList.iterator(); while (iterator.hasNext()) { System.out.println(iterator.next()); } // for loop System.out.println("#2 for"); for (int i = 0; i < lList.size(); i++) { System.out.println(lList.get(i)); } // for loop advance System.out.println("#3 for advance"); for (String temp : lList) { System.out.println(temp); } // while loop System.out.println("#4 while"); int j = 0; while (j < lList.size()) { System.out.println(lList.get(j)); j++; } } }
Output
#1 iterator Array 1 Array 2 Array 3 #2 for Array 1 Array 2 Array 3 #3 for advance Array 1 Array 2 Array 3 #4 while Array 1 Array 2 Array 3

Thanks man.. This helped a lot
@r30:
He showed that one already as his #3 loop “for loop advance”
// for loop advance
System.out.println(“#3 for advance”);
for (String temp : lList) {
System.out.println(temp);
}
i wanto display string ABC-123 in CBA-321 format
i wanto display ABC-123 in CBA-321 format
Thanks for list implementaion trying one for my ibatis project.
4. For-each loop (java5 feature):
//for-each loop
for (String element : lList) // or sArray
{
System.out.println( element );
}