第三天任务
第一步
*first i open text editor on linux and. i start coding for first the time. in java class first i create document
第 2 步
*then i start doing program for public class second and. i finishing program and. i save the program in the document.
第三步
*and i finally finishing the program ans it's the final Output



![如何更新 Java JDK [简单指南]](http://public-space.oss-cn-hongkong.aliyucs.com/keji/191.jpg)





