doom369

    public static void main(String[] args) {
        double average = 0;
        int count = 0;
        for (int i = 0; i < 1_000_000; i++) {
            average += enhance(10, 15, Scroll.REGULAR);
            count++;
        }
        System.out.println("Average : " + average / count);

        average = 0;

doom369

@BenchmarkMode(Mode.AverageTime)
@Fork(1)
@State(Scope.Thread)
@Warmup(iterations = 5, time = 1)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Measurement(iterations = 10, time = 1)
public class EmptyStringEquals {

   @Param({"", "nonEmptyString"})
   private String strParams;

doom369

Benchmark                               (strParams)  Mode  Cnt  Score   Error  Units

EmptyStringEquals.equalsPost                         avgt   10  4.240 ± 0.058  ns/op
EmptyStringEquals.nonNullAndIsEmpty                  avgt   10  2.985 ± 0.048  ns/op
EmptyStringEquals.preEquals                          avgt   10  4.243 ± 0.062  ns/op

EmptyStringEquals.equalsPost         nonEmptyString  avgt   10  3.522 ± 0.034  ns/op
EmptyStringEquals.nonNullAndIsEmpty  nonEmptyString  avgt   10  2.894 ± 0.048  ns/op
EmptyStringEquals.preEquals          nonEmptyString  avgt   10  3.672 ± 0.016  ns/op

doom369

@BenchmarkMode(Mode.AverageTime)
@Fork(1)
@State(Scope.Thread)
@Warmup(iterations = 5, time = 1)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Measurement(iterations = 10, time = 1)
public class EqualChar {

   @Param({"/", "/my/server/url"})
   private String url;

doom369

Benchmark                           (url)  Mode  Cnt  Score   Error  Units
EqualChar.equalsOptimized               /  avgt   10  3.806 ± 0.075  ns/op
EqualChar.equalsPost                    /  avgt   10  5.706 ± 0.089  ns/op
EqualChar.equalsPre                     /  avgt   10  5.960 ± 0.062  ns/op

EqualChar.equalsOptimized  /my/server/url  avgt   10  3.250 ± 0.204  ns/op
EqualChar.equalsPost       /my/server/url  avgt   10  3.464 ± 0.116  ns/op
EqualChar.equalsPre        /my/server/url  avgt   10  3.786 ± 0.027  ns/op

doom369

    public boolean equals(Object anObject) {
        if (this == anObject) {
            return true;
        }
        if (anObject instanceof String) {
            String aString = (String)anObject;
            if (coder() == aString.coder()) {
                return isLatin1() ? StringLatin1.equals(value, aString.value)
                                  : StringUTF16.equals(value, aString.value);
            }

doom369

@BenchmarkMode(Mode.AverageTime)
@Fork(1)
@State(Scope.Thread)
@Warmup(iterations = 5, time = 1)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Measurement(iterations = 10, time = 1)
public class EqualsIgnoreCase {

    @Param({"HELLO WORLD", "Hello World", "hello world", "otherParam"})
    String strParams;

doom369

JDK 1.8.0_265, OpenJDK 64-Bit Server VM, 25.265-b01

Benchmark                              (strParams)  Mode  Cnt   Score   Error  Units
EqualsIgnoreCase.equalsAndToLowerCase  HELLO WORLD  avgt   10  67.110 ± 0.891  ns/op
EqualsIgnoreCase.equalsIgnoreCase      HELLO WORLD  avgt   10  46.485 ± 0.671  ns/op

EqualsIgnoreCase.equalsAndToLowerCase  Hello World  avgt   10  57.092 ± 1.146  ns/op
EqualsIgnoreCase.equalsIgnoreCase      Hello World  avgt   10  29.846 ± 0.292  ns/op

EqualsIgnoreCase.equalsAndToLowerCase  hello world  avgt   10  23.289 ± 0.188  ns/op

doom369

    class User {

        String email;

        int age;

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;

doom369

@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork(1)
@State(Scope.Thread)
@Warmup(iterations = 5, time = 1)
@Measurement(iterations = 10, time = 1)
public class Hashcode {

    UserObjects userObjects;
    UserIDEDefault userIDEDefault;