explicitstatic.java

来自「java编程思想是一本非常经典的书籍 此源码包涵了书籍的所有源码 书籍源码」· Java 代码 · 共 43 行

//: c04:ExplicitStatic.java
// Explicit static initialization with the "static" clause.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import com.bruceeckel.simpletest.*;

class Cup {
  Cup(int marker) {
    System.out.println("Cup(" + marker + ")");
  }
  void f(int marker) {
    System.out.println("f(" + marker + ")");
  }
}

class Cups {
  static Cup c1;
  static Cup c2;
  static {
    c1 = new Cup(1);
    c2 = new Cup(2);
  }
  Cups() {
    System.out.println("Cups()");
  }
}

public class ExplicitStatic {
  static Test monitor = new Test();
  public static void main(String[] args) {
    System.out.println("Inside main()");
    Cups.c1.f(99);  // (1)
    monitor.expect(new String[] {
      "Inside main()",
      "Cup(1)",
      "Cup(2)",
      "f(99)"
    });
  }
  // static Cups x = new Cups();  // (2)
  // static Cups y = new Cups();  // (2)
} ///:~