Eclipse Test and Performance Tools Platform 简介
2009-12-19 00:00:00 来源:WEB开发网现在完成了!重新启动 Eclipse。在 Eclipse 工具栏上应该会看到一个新按钮,如图 1 所示。这是 TPTP Profile 按钮。TPTP 已经安装了,您可以继续学习本教程了。
图 1. TPTP Profile 按钮
对 Java 应用程序进行分析
既然已经安装了 TPTP 和底层软件,现在就运行 Eclipse。
示例应用程序
要分析的 Java 应用程序见清单 5。
清单 5. 由少量对象组成的简单 Java 应用程序
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class SpaceShipToy {
/*
* To build a spaceship, you need a capsule, a booster,
* three stages, and two monkeys (borrowed
* from a Barrel of Monkeys).
*/
public Capsule capsule = new Capsule();
public Booster booster = new Booster();
public Stage[] stage = new Stage[3];
public SpaceShipToy()
{
for (int i = 0; i < 3; i++)
stage[i] = new Stage();
}
private void _killTime(int seconds)
{
if (seconds <= 0)
return;
for (int i = 0; i < seconds; i++);
}
static final int MINUTE = 60;
static final int CAPSULE = 2 * MINUTE;
static final int BOOSTER = 5 * MINUTE;
static final int STAGE = 3 * MINUTE;
static final int MONKEY = 10 * MINUTE;
class Capsule {
public Monkey chimp1 = new Monkey(), chimp2 = new Monkey();
public Capsule() {
System.out.println("Start building the capsule...");
_killTime(CAPSULE);
chimp1.build();
chimp2.build();
System.out.println("Capsule complete.");
}
}
class Booster {
public Booster() {
System.out.println("Start booster...");
_killTime(BOOSTER);
System.out.println("Blast off.");
}
}
class Stage {
public Stage() {
System.out.println("start stage...");
_killTime(STAGE);
System.out.println("Stage complete.");
}
}
class Monkey {
public void start() {
System.out.println("Start the monkey business...");
}
public void build() {
start();
_killTime(MONKEY);
finish();
}
public void finish() {
System.out.println("Monkey business complete.");
}
}
public static void main(String[] args) throws java.io.IOException
{
final int NUMBERTOYS = 9;
BufferedReader in = new
BufferedReader(new InputStreamReader(System.in));
SpaceShipToy[] toys = new SpaceShipToy[NUMBERTOYS];
String input = in.readLine().trim();
System.out.println("Toy factory is up and running...");
System.out.flush();
for (int i = 0; i < NUMBERTOYS; i++)
toys[i] = null;
while (!input.equalsIgnoreCase("q")) {
if (input == null || input.length() != 1
|| !Character.isDigit(input.charAt(0))) {
System.err.println ("Unknown option. Try 0-9, q");
input = in.readLine().trim();
continue;
}
int number = Integer.valueOf(input).intValue();
if (number == 9) {
new SpaceShipToy();
System.out.println("Whoops... Lost one...");
}
else {
if (toys[number] != null) {
System.out.println("Shipping toy # " + number);
toys[number] = null;
}
else {
System.out.println("Building toy # " + number);
toys[number] = new SpaceShipToy();
}
}
input = in.readLine().trim();
}
}
}
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