清单 3. 仍在静态作用域中的对象
private static Object bigObject;
public static void test(int size) {
long startTime = System.currentTimeMillis();
long numObjects = 0;
while (true) {
//bigObject = null; //explicit nulling
//SizableObject could simply be a large array, e.g. byte[]
//In the JavaGaming discussion it was a BufferedImage
long endTime = System.currentTimeMillis();
++numObjects;
// We print stats for every two seconds
if (endTime - startTime >= 2000) {
System.out.println("Objects created per 2 seconds = " + numObjects);
startTime = endTime;
numObjects = 0;
}
}
}
这个例子有个简单的循环，创建一个大型对象并且将它赋给同一个变量，每隔两秒钟报告一次所创建的对象个数。现在的 Java