Benchmark.java

class AllocationItem {
  int value;

  public AllocationItem(int value) {
    this.value = value;
  }
}

public class Benchmark {
  public static void main(String[] args) {
    if (args.length < 2) {
      System.err.println("Bad commandline");
      return;
    }
    String benchmark = args[0];
    int iters = Integer.parseInt(args[1]);
    if (benchmark.equals("allocations")) {
      RunAllocations(iters);
    } else {
      System.err.println("Invalid benchmark name");
    }
  }

  private static void RunAllocations(int iters) {
    int sum = 0;
    for (int i = 0; i < iters; ++i) {
      AllocationItem item = new AllocationItem(i);
      sum += item.value;
    }
    System.out.println("Ran " + iters + " allocations of RunAllocations. " +
                       "Final value: "  + sum);
  }
}