import
java.io.StringWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
public class HugeMethodDemo {
public static void main(String[]
args) throws Exception {
HugeMethodDemo demo = new HugeMethodDemo();
int warmup = 2000;
demo.run(warmup);
int loop = 200000;
double total = demo.run(loop);
double avg = total / loop /
1e6 * 1e4;
System.out.println(String.format(
"Loop=%d次, " + "avg=%.2f毫秒/万次",
loop, avg));
}
private long run(int loop) throws
Exception {
long total = 0L;
for (int i = 0; i < loop;
i++) {
Map theWorld = buildTheWorld();
StringWriter console = new StringWriter();
long start = System.nanoTime();
play(theWorld, console);
long end = System.nanoTime();
total += (end - start);
}
return total;
}
private Map buildTheWorld()
{
Map context = new HashMap();
context.put("name",
"D&D");
context.put("version",
"1.0");
Map game = new HashMap();
context.put("game",
game);
Map player = new HashMap();
game.put("player",
player);
player.put("level",
"26");
player.put("name",
"jifeng");
player.put("job",
"paladin");
player.put("address",
"heaven");
player.put("weapon",
"sword");
player.put("hp", 150);
String[] bag = new String[]
{ "world_map", "dagger",
"magic_1", "potion_1",
"postion_2", "key" };
player.put("bag",
bag);
return context;
}
private void play(Map theWorld,
Writer console) throws Exception {
// 重复拷贝的开始位置
if (true) {
String name = String.valueOf(theWorld.get("name"));
String version = String.valueOf(theWorld.get("version"));
console.append("Game ").append(name).append("
(v").append(version).append(")\n");
Map game = (Map) theWorld.get("game");
if (game != null) {
Map player = (Map) game.get("player");
if (player != null) {
String level = String.valueOf(player.get("level"));
String job = String.valueOf(player.get("job"));
String address = String.valueOf(player.get("address"));
String weapon = String.valueOf(player.get("weapon"));
String hp = String.valueOf(player.get("hp"));
console.append(" You are
a ").append(level).append(" level ").append(job)
.append(" from ").append(address).append(".
\n");
console.append(" Currently
you have a ") .append(weapon).append("
in hand, ")
.append("your hp: ").append(hp).append(".
\n");
console.append(" Here are
items in your bag: \n");
for (String item : (String[])
player.get("bag")) {
console.append(" * ").append(item).append("\n");
}
} else {
console.append("\tPlayer
not login.\n");
}
} else {
console.append("\tGame
not start yet.\n");
}
}
// 重复拷贝的结束位置
}
} |
