38 lines
1.1 KiB
Java
38 lines
1.1 KiB
Java
// annotations/UseCaseTracker.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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import java.util.stream.*;
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import java.lang.reflect.*;
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public class UseCaseTracker {
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public static void
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trackUseCases(List<Integer> useCases, Class<?> cl) {
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for(Method m : cl.getDeclaredMethods()) {
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UseCase uc = m.getAnnotation(UseCase.class);
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if(uc != null) {
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System.out.println("Found Use Case " +
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uc.id() + "\n " + uc.description());
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useCases.remove(Integer.valueOf(uc.id()));
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}
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}
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useCases.forEach(i ->
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System.out.println("Missing use case " + i));
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}
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public static void main(String[] args) {
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List<Integer> useCases = IntStream.range(47, 51)
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.boxed().collect(Collectors.toList());
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trackUseCases(useCases, PasswordUtils.class);
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}
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}
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/* Output:
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Found Use Case 48
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no description
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Found Use Case 47
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Passwords must contain at least one numeric
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Found Use Case 49
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New passwords can't equal previously used ones
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Missing use case 50
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*/
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