29 lines
790 B
Java
29 lines
790 B
Java
// generics/FilledList.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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import java.util.*;
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import java.util.function.*;
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import onjava.*;
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class FilledList<T> extends ArrayList<T> {
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public FilledList(Supplier<T> gen, int size) {
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Suppliers.fill(this, gen, size);
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}
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public FilledList(T t, int size) {
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for(int i = 0; i < size; i++)
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this.add(t);
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}
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public static void main(String[] args) {
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List<String> list = new FilledList<>("Hello", 4);
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System.out.println(list);
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// Supplier version:
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List<Integer> ilist = new FilledList<>(() -> 47, 4);
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System.out.println(ilist);
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}
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}
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/* Output:
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[Hello, Hello, Hello, Hello]
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[47, 47, 47, 47]
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*/
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