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import java.util.ArrayList;
import java.util.Collections;
public class Main {
public static void main(String[] args) {
ArrayList<String> arrayList = new ArrayList<String>();
arrayList.add("A");
arrayList.add("B");
arrayList.add("A");
arrayList.add("C");
arrayList.add("D");
System.out.println(arrayList);
Collections.replaceAll(arrayList, "A", "Replace All");
System.out.println(arrayList);
}
}
/*
[A, B, A, C, D]
[Replace All, B, Replace All, C, D]
*/
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