异常类抛出使用：fillInStackTrace

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

 

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)