学步园

 public class TestChainException {<br /> public static void main(String[] args) throws Throwable {<br /> catchException();</p> <p> }</p> <p> public static void catchException() throws Throwable{<br /> try {<br /> throwException();<br /> } catch (Exception e) {<br /> System.out.println("------------------");<br /> throw e;<br /> // throw e.fillInStackTrace();<br /> }<br /> }<br /> public static void throwException() throws Exception{<br /> System.out.println("good");<br /> throw new Exception("this is a exception");<br /> }<br /> }
输出结果为：

good
------------------
Exception in thread "main" java.lang.Exception: this is a exception
    at TestChainException.throwException(TestChainException.java:20)
    at TestChainException.catchException(TestChainException.java:11)
    at TestChainException.main(TestChainException.java:5)

去掉注释：并注释：throw e;

good
------------------
Exception in thread "main" java.lang.Exception: this is a exception
    at TestChainException.catchException(TestChainException.java:15)
    at TestChainException.main(TestChainException.java:5)
区别两个结果会发现异常抛出信息的差别，使用throw e.fillInStackTrace();后异常抛出信息的抛出点不再有at TestChainException.throwException(TestChainException.java:20)