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FillingLists.java
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34 lines (32 loc) · 999 Bytes
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// collectiontopics/FillingLists.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Collections.fill() & Collections.nCopies()
import java.util.*;
class StringAddress {
private String s;
StringAddress(String s) { this.s = s; }
@Override public String toString() {
return super.toString() + " " + s;
}
}
public class FillingLists {
public static void main(String[] args) {
List<StringAddress> list = new ArrayList<>(
Collections.nCopies(4,
new StringAddress("Hello")));
System.out.println(list);
Collections.fill(list,
new StringAddress("World!"));
System.out.println(list);
}
}
/* Output:
[StringAddress@19e0bfd Hello, StringAddress@19e0bfd
Hello, StringAddress@19e0bfd Hello,
StringAddress@19e0bfd Hello]
[StringAddress@139a55 World!, StringAddress@139a55
World!, StringAddress@139a55 World!,
StringAddress@139a55 World!]
*/