摘要：1. Java Basic Structurepublic class Hello { public static void main(String[] args) { System.out.println("Hello World"); } ... 阅读全文

摘要：I/OSystem.out is a PrintStream object that outputs to the screen.System.in is a InputStream object that reads from the keyboard.InputStream objects (l... 阅读全文

摘要：1. Git 创建仓库 git init 把当前目录变成 git 仓库 2. Git 提交更改git add <file> git rm --cached <file> git rm -r --cached <dir> git status 掌握仓库当前的状态 git diff FILE 查看现在文 阅读全文

摘要：pwd outputs the name of the current working directory.lslists all files and directories in the working directory.cdswitches you into the directory you... 阅读全文