class Main{public static void main(String args[]){String str = null;System.out.print(str.length());}} 大学生です！1週間1Qiita頑張ってます！

I'm a network designer.I work on TOPPERS SmallestSetProfile Kernel,MISRA-C/C++, STARC RTL Design StyleGuide (Verilog-HDL), and HAZOP.I was an editor of ISO/IEC 15504.