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package optjava;

public final class StringHash {

public static void main(String[] args) {

StringHash sh = new StringHash();

sh.run();

}

void run() {

for (int i = 1; i < 2_000; i++) {

timeHashing(i, 'x');

}

// System.identityHashCode(this);

}

void timeHashing(int length, char c) {

final StringBuilder sb = new StringBuilder();

for (int j = 0; j < length * 1_000_000; j++) {

sb.append(c);

}

final String s = sb.toString();

final long now = System.nanoTime();

final int hash = s.hashCode();

final long duration = System.nanoTime() - now;

// System.err.println("Length: " + length + " took: " + duration + " ns");

System.out.println(length + ","+ duration +","+ hash);

}

}