/**
* @param t the Throwable to get the causal chain from.
* @return the entire chain of causes, including the given Throwable.
*/
public static Stream<Throwable> causalChainOf(Throwable t) {
Stream.Builder<Throwable> causes = Stream.builder();
for (Throwable cause = t; cause != null; cause = cause.getCause()) {
causes.add(cause);
}
return causes.build();
}
public static void main(String[] args) {
final List<Pair> generateDemoValues = new PairListGenerator() {}.generateDemoValues();
// Stream from Values
final Stream<Pair> fromValues = Stream.of(new Pair(), new Pair());
// Stream from Array
final Pair[] pairs = {new Pair(), new Pair()};
final Stream<Pair> fromArray = Stream.of(pairs);
// Stream from List
final Stream<Pair> fromList = generateDemoValues.stream();
// Stream from String
final Stream<String> abc = Stream.of("ABC");
final Stream<IntStream> of = Stream.of("ABC".chars());
final Stream<String> splitOf = Stream.of("A,B,C".split(","));
// Stream from builder
final Stream<Pair> builderPairStream = Stream.<Pair>builder().add(new Pair()).build();
// Stream to Array
final Pair[] toArray = generateDemoValues.stream().toArray(Pair[]::new);
// Stream to List
final List<Pair> toList = generateDemoValues.stream().collect(Collectors.toList());
// Stream to Set
final Set<Pair> toSet = generateDemoValues.stream().collect(Collectors.toSet());
// Stream to Map
final Map<Integer, List<Pair>> collectedToMap =
generateDemoValues.stream().collect(Collectors.groupingBy(Pair::getId));
System.out.println("collectedToMap.size() = " + collectedToMap.size());
for (final Map.Entry<Integer, List<Pair>> entry : collectedToMap.entrySet()) {
System.out.println("entry = " + entry);
}
}