finallyworks.java

经典java书籍《thinking in java（第三版）》的源码

//: c09:FinallyWorks.java
// The finally clause is always executed.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import com.bruceeckel.simpletest.*;

class ThreeException extends Exception {}

public class FinallyWorks {
  private static Test monitor = new Test();
  static int count = 0;
  public static void main(String[] args) {
    while(true) {
      try {
        // Post-increment is zero first time:
        if(count++ == 0)
          throw new ThreeException();
        System.out.println("No exception");
      } catch(ThreeException e) {
        System.err.println("ThreeException");
      } finally {
        System.err.println("In finally clause");
        if(count == 2) break; // out of "while"
      }
    }
    monitor.expect(new String[] {
      "ThreeException",
      "In finally clause",
      "No exception",
      "In finally clause"
    });
  }
} ///:~