53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
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//: net/mindview/util/ContainerMethodDifferences.java
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package net.mindview.util;
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import java.lang.reflect.*;
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import java.util.*;
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public class ContainerMethodDifferences {
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static Set<String> methodSet(Class<?> type) {
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Set<String> result = new TreeSet<String>();
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for(Method m : type.getMethods())
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result.add(m.getName());
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return result;
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}
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static void interfaces(Class<?> type) {
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System.out.print("Interfaces in " +
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type.getSimpleName() + ": ");
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List<String> result = new ArrayList<String>();
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for(Class<?> c : type.getInterfaces())
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result.add(c.getSimpleName());
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System.out.println(result);
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}
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static Set<String> object = methodSet(Object.class);
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static { object.add("clone"); }
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static void
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difference(Class<?> superset, Class<?> subset) {
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System.out.print(superset.getSimpleName() +
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" extends " + subset.getSimpleName() + ", adds: ");
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Set<String> comp = Sets.difference(
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methodSet(superset), methodSet(subset));
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comp.removeAll(object); // Don't show 'Object' methods
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System.out.println(comp);
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interfaces(superset);
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}
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public static void main(String[] args) {
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System.out.println("Collection: " +
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methodSet(Collection.class));
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interfaces(Collection.class);
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difference(Set.class, Collection.class);
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difference(HashSet.class, Set.class);
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difference(LinkedHashSet.class, HashSet.class);
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difference(TreeSet.class, Set.class);
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difference(List.class, Collection.class);
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difference(ArrayList.class, List.class);
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difference(LinkedList.class, List.class);
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difference(Queue.class, Collection.class);
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difference(PriorityQueue.class, Queue.class);
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System.out.println("Map: " + methodSet(Map.class));
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difference(HashMap.class, Map.class);
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difference(LinkedHashMap.class, HashMap.class);
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difference(SortedMap.class, Map.class);
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difference(TreeMap.class, Map.class);
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}
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} ///:~
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