content: package com.alibaba.fastjson2.benchmark.fastcode;
  
  import com.alibaba.fastjson2.util.IOUtils;
  import com.alibaba.fastjson2.util.JDKUtils;
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.infra.Blackhole;
  import org.openjdk.jmh.runner.Runner;
  import org.openjdk.jmh.runner.RunnerException;
  import org.openjdk.jmh.runner.options.Options;
  import org.openjdk.jmh.runner.options.OptionsBuilder;
  
  import java.util.concurrent.TimeUnit;
  
  public class StringFormatBenchmark {
      static int value = 10245;
      static final String PREFIX = "id : ";
      static final char[] PREFIX_CHARS = PREFIX.toCharArray();
      static final byte[] PREFIX_BYTES = PREFIX.getBytes();
  
      @Benchmark
      public void format(Blackhole bh) throws Exception {
          bh.consume(
                  String.format("id : %s", value)
          );
      }
  
      @Benchmark
      public void StringBuffer(Blackhole bh) {
          bh.consume(
                  new StringBuilder().append(PREFIX).append(value).toString()
          );
      }
  
      @Benchmark
      public void creator(Blackhole bh) {
          int i = value;
          int size = (i < 0) ? IOUtils.stringSize(-i) + 1 : IOUtils.stringSize(i);
          String str;
          if (JDKUtils.JVM_VERSION == 8) {
              char[] chars = new char[PREFIX_CHARS.length + size];
              System.arraycopy(PREFIX_CHARS, 0, chars, 0, PREFIX_CHARS.length);
              IOUtils.getChars(i, chars.length, chars);
              str = JDKUtils.STRING_CREATOR_JDK8.apply(chars, Boolean.TRUE);
          } else {
              byte[] chars = new byte[PREFIX_BYTES.length + size];
              System.arraycopy(PREFIX_BYTES, 0, chars, 0, PREFIX_BYTES.length);
              IOUtils.getChars(i, chars.length, chars);
              str = JDKUtils.STRING_CREATOR_JDK11.apply(chars, JDKUtils.LATIN1);
          }
          bh.consume(str);
      }
  
      public static void main(String[] args) throws RunnerException {
          Options options = new OptionsBuilder()
                  .include(StringFormatBenchmark.class.getName())
                  .mode(Mode.Throughput)
                  .timeUnit(TimeUnit.MILLISECONDS)
                  .warmupIterations(1)
                  .forks(1)
                  .build();
          new Runner(options).run();
      }
  }
  