30 lines
826 B
Java
30 lines
826 B
Java
// generics/GenericVarargs.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://mindviewinc.com/Books/OnJava/ for more book information.
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import java.util.*;
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public class GenericVarargs {
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@SuppressWarnings("unchecked")
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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("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, S,
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T, U, V, W, X, Y, Z]
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*/
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