用户交互scanner

nextline方法
public class demon02 {
public class demon01 {
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("使用nextline方法接收：");
if (scanner.hasNextLine()) {
String str = scanner.next();
System.out.println("输出内容为：" + str);
}
scanner.close();
}
}
next方法
public class demon01 {
public static void main(String[] args) {
Scanner scanner= new Scanner(System.in);
System.out.println("使用next方法接收：");
if (scanner.hasNext()) {
String str = scanner.next();
System.out.println("输出内容为：" + str);
}
scanner.close();
}
}