stoty commented on PR #7313:
URL: https://github.com/apache/hbase/pull/7313#issuecomment-3307137189
According to my benchmark, there is no perf implication for removing final:
`
import java.util.Date;
public class MicroBenchmark {
static class TestWithFinal {
private static final boolean a = true;
public static int get() {
if (a) {
return 1;
} else {
return 0;
}
}
}
static class TestWithoutFinal {
private static boolean a = true;
public static int get() {
if (a) {
return 1;
} else {
return 0;
}
}
}
public static void main(String[] args) {
long count = 4000000000l;
long sum = 0;
long start = (new Date()).getTime();
for (long i = 0; i < count; i++) {
sum += TestWithFinal.get();
}
System.out.println("final:" + ((new Date()).getTime() - start) +
"ms" + " sum:" + sum);
sum = 0;
long start2 = (new Date()).getTime();
for (long i = 0; i < count; i++) {
sum += TestWithoutFinal.get();
}
System.out.println("no final:" + ((new Date()).getTime() - start2) +
"ms" + " sum:" + sum);
sum = 0;
long start3 = (new Date()).getTime();
for (long i = 0; i < count; i++) {
sum += TestWithFinal.get();
}
System.out.println("final:" + ((new Date()).getTime() - start3) +
"ms" + " sum:" + sum);
sum = 0;
long start4 = (new Date()).getTime();
for (long i = 0; i < count; i++) {
sum += TestWithoutFinal.get();
}
System.out.println("no final:" + ((new Date()).getTime() - start4) +
"ms" + " sum:" + sum);
}
}
`
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