java – 向异常添加信息

基本上我现在有这样的东西,我真的很喜欢：

Exception in thread "main" java.lang.ArithmeticException: / by zero
    at com.so.main(SO.java:41)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke

但是,我想捕获该异常并添加其他信息,同时仍然具有原始堆栈跟踪.

例如,我想要这样做：

Exception in thread "main" CustomException: / by zero (you tried to divide 42 by 0)
    at com.so.main(SO.java:41)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke

所以基本上我想抓住ArithmeticException并重新抛出,比如说,一个CustomException(添加“你试图在这个例子中划分42”),同时仍然保持堆栈跟踪从原来的ArithmeticException.

在Java中做什么正确的方法？

以下是正确的：

try {
     ....
} catch (ArithmeticException e) {
     throw new CustomException( "You tried to divide " + x + " by " + y,e );
}