Final Keyworkd advantage on single use variable

gistfile1.java

//        # JMH1.10.1(released 13 days ago)
//        # VM invoker:/Library/Java/JavaVirtualMachines/1.6.0_65-b14-462.jdk/Contents/Home/bin/java
//        # VM options:-Didea.launcher.port=7536-Didea.launcher.bin.path=/Applications/IntelliJ-IDEA-14.app/Contents/bin-Dfile.encoding=UTF-8
//        # Warmup:1 iterations,1 s each
//        # Measurement:5 iterations,1 s each
//        # Timeout:10 min per iteration
//        # Threads:1 thread,will synchronize iterations
//        # Benchmark mode:Average time,time/op
//        # Benchmark:com.xoom.api.client.l10n.FinalKeywordBenchmark.MainBenchmark.finalBenchmark
//
//        # Run progress:0.00%complete,ETA 00:00:12
//        # Fork:1 of 1
//        # Warmup Iteration 1:1940990.347ns/op
//        Iteration 1:1803519.784ns/op
//        Iteration 2:1787671.403ns/op
//        Iteration 3:1759243.433ns/op
//        Iteration 4:1818459.313ns/op
//        Iteration 5:1839140.768ns/op
//
//
//        Result"finalBenchmark":
//        1801606.940 ±(99.9%)116880.136ns/op[Average]
//        (min,avg,max)=(1759243.433,1801606.940,1839140.768),stdev=30353.400
//        CI(99.9%):[1684726.804,1918487.076](assumes normal distribution)
//
//
//        # JMH1.10.1(released 13 days ago)
//        # VM invoker:/Library/Java/JavaVirtualMachines/1.6.0_65-b14-462.jdk/Contents/Home/bin/java
//        # VM options:-Didea.launcher.port=7536-Didea.launcher.bin.path=/Applications/IntelliJ-IDEA-14.app/Contents/bin-Dfile.encoding=UTF-8
//        # Warmup:1 iterations,1 s each
//        # Measurement:5 iterations,1 s each
//        # Timeout:10 min per iteration
//        # Threads:1 thread,will synchronize iterations
//        # Benchmark mode:Average time,time/op
//        # Benchmark:com.xoom.api.client.l10n.FinalKeywordBenchmark.MainBenchmark.notFinalBenchmark
//
//        # Run progress:50.00%complete,ETA 00:00:07
//        # Fork:1 of 1
//        # Warmup Iteration 1:1945411.992ns/op
//        Iteration 1:1827960.000ns/op
//        Iteration 2:1872893.855ns/op
//        Iteration 3:1871284.916ns/op
//        Iteration 4:1934232.692ns/op
//        Iteration 5:1842595.238ns/op
//
//
//        Result"notFinalBenchmark":
//        1869793.340 ±(99.9%)157052.859ns/op[Average]
//        (min,avg,max)=(1827960.000,1869793.340,1934232.692),stdev=40786.129
//        CI(99.9%):[1712740.481,2026846.199](assumes normal distribution)
//
//
//        # Run complete.Total time:00:00:15
//
//        Benchmark Mode Cnt Score Error Units
//        FinalKeywordBenchmark.MainBenchmark.finalBenchmark avgt 5 1801606.940 ± 116880.136ns/op
//        FinalKeywordBenchmark.MainBenchmark.notFinalBenchmark avgt 5 1869793.340 ± 157052.859ns/op
//
//        Process finished with exit code 0
package com.xoom.api.client.l10n;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.TimeValue;

import java.util.concurrent.TimeUnit;

/**
 * Created by lsamayoa on 7/8/15.
 */
public class FinalKeywordBenchmark {
    public static void main(String[] args) throws Exception {

        Options opt = new OptionsBuilder()
                // Specify which benchmarks to run.
                // You can be more specific if you'd like to run only one benchmark per test.
                .include(FinalKeywordBenchmark.class.getName() + ".*")
                        // Set the following options as needed
                .mode(Mode.AverageTime)
                .timeUnit(TimeUnit.NANOSECONDS)
                        // .warmupTime(TimeValue.seconds(1))
                .warmupIterations(1)
                .measurementTime(TimeValue.seconds(1))
                .measurementIterations(5)
                .threads(1)
                .forks(1)
                .shouldFailOnError(true)
                .shouldDoGC(true)
                        //.jvmArgs("-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining")
                        //.addProfiler(WinPerfAsmProfiler.class)
                .build();

        new Runner(opt).run();
    }

    @State(Scope.Thread)
    public static class MainBenchmark {
        @Benchmark
        public void finalBenchmark(){
            for (int i = 0; i < 15000; i++){
                final String string = "aslkfuhsdkufhadskfha";
                string.getBytes();

                final int integer = 1656522;
                final int integer2 = integer+1;
                String.valueOf(integer2);

                final boolean bool = true;
                boolean bool2 = !bool;
                String.valueOf(bool2);

            }
        }

        @Benchmark
        public void notFinalBenchmark() {
            for (int i = 0; i < 15000; i++) {
                String string = "aslkfuhsdkufhadskfha";
                string.getBytes();

                int integer = 1656522;
                final int integer2 = integer + 1;
                String.valueOf(integer2);

                boolean bool = true;
                boolean bool2= !bool;
                String.valueOf(bool2);
            }
        }
    }
}