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                1.初識Java需了解的單詞 ~~~ public //公共的 class //類 static //靜態的 void //無返回類型 main //主要的 String //字符串 args //參數 System //系統的 out //輸出設備 print //打印 ~~~ 2.第一個Java程序 ~~~ public class Test{ public static void main(String[] args){ System.out.println("初識Java"); } } //println相當print加換行 ~~~ 3.知識點總結 ~~~ //單行注釋 /*多行注釋*/ \t 輸出8個空格 就相當于一個制表位 \n 換行 ~~~ 4.運行java文件 ![](https://box.kancloud.cn/7645b6822de2091a8a223839e092af7b_208x106.png) ~~~ 切換到所在文件夾,執行命令 javac Test.java 將java文件編譯class文件 再執行命令 java Test 運行java文件 ~~~
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