30 lines
858 B
Java
30 lines
858 B
Java
package ex4;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.atomic.LongAdder;
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public final class Profiler {
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private static final Map<String, LongAdder> exceptionNameToCount = new ConcurrentHashMap<>();
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static {
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Runtime.getRuntime().addShutdownHook(new Thread(() -> {
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for (final var entry : exceptionNameToCount.entrySet()) {
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System.out.printf("Exception: %s - occurrences: %d%n", entry.getKey(), entry.getValue().intValue());
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}
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}));
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}
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private Profiler() {
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}
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public static void countException(Throwable e) {
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final String exceptionName = e.getClass().getName();
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exceptionNameToCount.computeIfAbsent(exceptionName, k -> new LongAdder());
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exceptionNameToCount.get(exceptionName).increment();
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}
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}
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