importjava.util.Scanner;publicclassInputExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入一个整数: ");intnumber=scanner.nextInt();System.out.println("您输入的整数是: "+number);System.out.print("请输入一个字符串: ");Stringtext=scanner.nex...
Scanner scan = new Scanner(System.in); means that scan is a Scanner. It's pretty simple. Don't worry too much about what it equals, it just means that it will be getting our input. Notice how it looks awfully
注意不管Input1在sc前还是Input2在sc后都先于Output在窗体输出 nextLine()获得一整行无转行的输入(输入可包括空格),返回类型为String System.out.println("Input1:"); Scanner sc = new Scanner(System.in);/*sc 是变量,System.in 代表从键盘获得输入*/ System.out.println("Output:"+sc.nextLine()); 1....
其实并不是Scanner将控制台输入给简单化了,只是在其内部的实现中已经将IOException处理了,而且采用InputStreamReader来一个字符一个字符进行扫描读取的(嘿嘿,它本身就是个扫描器),只是Scanner做了更高层次的封装。 Scanner不仅可以从控制台中读取字符串,还可以读取除char之外的其他七种基本类型和两个大数字类型,并不需...
/***Scanner的使用***/ // public static void main(String[] args) { // Scanner input = new Scanner(System.in); // System.out.println("请输入一个字符串:"); // String str = input.next();//接收用户输入的字符串 // System.out.println(str...
;// Import the Scanner classclassMain{publicstaticvoidmain(String[]args){ScannermyObj=newScanner(System.in);// Create a Scanner objectSystem.out.println("Enter username");StringuserName=myObj.nextLine();// Read user inputSystem.out.println("Username is: "+userName);// Output user input}}...
packagerjxy2019_java_demo;importjava.util.Scanner;publicclassSwitchWithDays{publicstaticvoidmain(String[]args){Scanner input=newScanner(System.in);System.out.println("Please enter a year:");int year=input.nextInt();System.out.println("Please enter a month:");int month=input.nextInt();int da...
1.你使用的是jdk1.4，Scanner是jdk1.5以后才有的 2.你没有导入这个类，import java.util.Scanner 是
Returns true if the next token in this scanner's input can be interpreted as a boolean value using a case insensitive pattern created from the string "true|false". boolean hasNextByte() Returns true if the next token in this scanner's input can be interpreted as a byte value in the de...
System.in是系统自带的输入流，警告提示的是输入流没有关闭，这种情况不用管的，能正常运行。警告