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...
import java.util.*;//导入java.util下的所有类,import与c语言中的#include头文件有些类似 public class useage { public static void main(String[] args){ Scanner input=new Scanner(System.in); System.out.println("输入一个带有空格的串用nextLine()输入"); String str1=input.nextLine(); System.out....
import java.util.Scanner; public class Test3 { public static void main(String[] args) { String str = readString5("请输入字符串:"); System.out.println("readString5 方法的输入:" + str); } private static String readString5(String prompt) { Scanner scanner = new Scanner(System.in); System...
Scanner也可以从字符串(Readable)、输入流、文件等等来直接构建Scanner对象,有了Scanner了,就可以逐段(根据正则分隔式)来扫描整个文本,并对扫描后的结果做想要的处理。 控制台扫描: 1 Scanner sc =newScanner(System.in);2while(true) {3 String line =sc.nextLine();4if(line.equals("exit"))break;//如果...
Okay, so now the input someone types in will be stored in your String variable from the Java Scanner. You can use that variable to now output back the line of text. The program will just echo whatever is typed in. You should be able to output the string on your own, because you sho...
5. JavaInputStreamto String usingScanner UsingScannerclass is not so popular, but it works. The reason it works is becauseScanneriterates over tokens in the stream, and in this process, we can separate tokens using the “beginning of the input boundary” thus giving us only one token for ...
大家好,又见面了,我是你们的朋友全栈君。完整的写法是 先导入 输入流 类 Scanner importjava.util.Scanner; 然后使用输入流 , 按照你的问题中的 写法 名称 应该这样使用 Scanner 这个类 Scanner input = new Scanner(System.in); // 创建输入流对象 input int userNum = input.nextInt(); // 使用输入流...
importjava.util.Scanner;// 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);//...
throw new java.util.InputMismatchException(); } 输入badinput会将input.hasNextInt()评估为false,这意味着将执行else块而不消耗该badinput(为此,我们需要调用next()-而不是nextLine(),因为您可能知道是否我们在nextInt之后使用nextLine,我们将消耗剩余的行分隔符,而不是next的值,在Scanner处的更多信息是在使用next...
import java.util.Scanner;public class Main {。public static void main(String[] args) {。Scanner scanner = new Scanner(System.in);System.out.print("请输入您的年龄，");int age = scanner.nextInt();System.out.println("您的年龄是，" + age);}。}。在这段代码中，我们首先创建了一个Scanner...