import java.util.ArrayList;
import java.util.Collections;
public class ReplaceAllElements {
public static void main(String[] args) {
// TODO Auto-generated method stub
ArrayList arrayList = new ArrayList();
arrayList.add("A");
arrayList.add("B");
arrayList.add("D");
System.out.println("Before replacement, ArrayList contains : " + arrayList);
Collections.fill(arrayList,"REPLACED");
System.out.println("After replacement, ArrayList contains : " + arrayList);
}
}
Console：
Before replacement, ArrayList contains : [A, B, D]
After replacement, ArrayList contains : [REPLACED, REPLACED, REPLACED]
