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26 lines
444 B
Java
26 lines
444 B
Java
import java.util.LinkedList;
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import java.util.List;
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class MyTest {
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private Test<LinkedList> alist;
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public Test<LinkedList> getAlist() {
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return alist = create(Test::new, alist);
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}
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private <T> T create(CreateCallback<T> callback, T defaultVal) {
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if (defaultVal == null) {
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return callback.create();
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}
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return defaultVal;
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}
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interface CreateCallback<T> {
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T create();
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}
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class Test<E extends List> {}
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} |