Java学习笔记【输入输入知识要点】

Scanner in = new Scanner(System.in);
然后
String name = in.nextLine();//输入一行可包含空格
String name = in.next();//输入一个单词
String name = in.nextInt();//整型
String name = in.nextDouble();//double

System.out.println("asa");

//读取文件
Scanner in = new Scanner(Paths.get("myfile.txt"));

Scanner in_in = new Scanner(Paths.get("D:\\Eclipse\\myfile.txt"));

//写入文件
PrintWriter out = new PrintWriter("myfile.txt");