In-depth research on "exception mechanism" in Java

In Java, an in-depth study of the "exception mechanism"-general Linux technology-Linux programming and kernel information. The following is a detailed description. This article aims to explore the deep principles of Java "exception mechanism", so the usage of "exception" is not described in detail. First, let's look at a very familiar section of C program used to open a file:

CODE: FILE * fp; Fp = fopen (filename, "rw "); If (fp = NULL ){ Printf ("cannot open file \ n "); Exit (0 ); }