failfast.java

来自「java编程思想第3版原代码分享是java编程思想一本好书,大家多多学习」· Java 代码 · 共 17 行

//: c11:FailFast.java
// Demonstrates the "fail fast" behavior.
// {ThrowsException}
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.util.*;

public class FailFast {
  public static void main(String[] args) {
    Collection c = new ArrayList();
    Iterator it = c.iterator();
    c.add("An object");
    // Causes an exception:
    String s = (String)it.next();
  }
} ///:~