31 lines
797 B
Java
31 lines
797 B
Java
// generics/GenericVarargs.java
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// (c)2017 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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public class GenericVarargs {
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@SafeVarargs
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public static <T> List<T> makeList(T... args) {
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List<T> result = new ArrayList<>();
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for(T item : args)
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result.add(item);
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return result;
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}
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public static void main(String[] args) {
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List<String> ls = makeList("A");
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System.out.println(ls);
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ls = makeList("A", "B", "C");
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System.out.println(ls);
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ls = makeList(
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"ABCDEFFHIJKLMNOPQRSTUVWXYZ".split(""));
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System.out.println(ls);
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}
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}
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/* Output:
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[A]
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[A, B, C]
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[A, B, C, D, E, F, F, H, I, J, K, L, M, N, O, P, Q, R,
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S, T, U, V, W, X, Y, Z]
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*/
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