finallyworks.java

来自「think in java TIJ-3rd-edition-code.zip」· Java 代码 · 共 32 行

//: c10:FinallyWorks.java
// The finally clause is always executed.
import com.bruceeckel.simpletest.*;

class ThreeException extends Exception {}

public class FinallyWorks {
  static int count = 0;
  public static void main(String[] args) {
    SimpleTest monitor =
      new SimpleTest("FinallyWorks");
    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"
    });
  }
} ///:~