Java Collections.copy(List <? super T> dest, List <? extends T> src)
Syntax
Collections.copy(List <? super T> dest, List <? extends T> src) has the following syntax.
public static <T> void copy(List <? super T> dest, List <? extends T> src)
Example
In the following code shows how to use Collections.copy(List <? super T> dest, List <? extends T> src) method.
/*from w w w.j ava 2 s .co m*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Main {
public static void main(String args[]) {
List<String> srclst = new ArrayList<String> (5);
List<String> destlst = new ArrayList<String> (10);
// populate two lists
srclst.add("tutorial");
srclst.add("from");
srclst.add("java2s.com");
destlst.add("Java Tutorial");
destlst.add("From");
destlst.add("Java2s.com");
// copy into dest list
Collections.copy(destlst, srclst);
System.out.println("Value of source list: "+srclst);
System.out.println("Value of destination list: "+destlst);
}
}
The code above generates the following result.
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