serialnumbergenerator.java

来自「Thinking in JAVA第四版源代码」· Java 代码 · 共 9 行

//: concurrency/SerialNumberGenerator.java

public class SerialNumberGenerator {
  private static volatile int serialNumber = 0;
  public static int nextSerialNumber() {
    return serialNumber++; // Not thread-safe
  }
} ///:~