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.Scanner; public class Program { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner scanner = new Scanner(System.in); String input; System.out.println("输入一个整数a:"); input = scanner.next(); int a = Integer...
当通过new Scanner(System.in)创建一个Scanner,控制台会一直等待输入,直到敲回车键结束,把所输入的内容传给Scanner,作为扫描对象。如果要获取输入的内容,则只需要调用Scanner的nextLine()方法即可。 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...
1InputStreamReader (InputStream in)//创建一个使用默认字符集的 InputStreamReader。 2InputStreamReader (InputStream in, Charset cs)//创建使用给定字符集的 InputStreamReader。 3InputStreamReader (InputStream in, CharsetDecoder dec)//创建使用给定字符集解码器的 InputStreamReader。 4InputStreamReader (Inp...
;// 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}}...
A simple text scanner which can parse primitive types and strings using regular expressions. A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace. The resulting tokens may then be converted into values of different types using the various next methods...
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
When a scanner throws an InputMismatchException, the scanner will not pass the token that caused the exception, so that it may be retrieved or skipped via some other method. Depending upon the type of delimiting pattern, empty tokens may be returned. For example, the pattern "\\s+" will...
Using Both Input And Output Now that we can do both input and output, let's make a little addition program that makes full use of the Java Scanner class. The program will ask the user to type in a number, ask the user to type in a second number, and then display the addition of ...
() * @since 0.8.0 */ public class Test { /** * 介绍属性的作用 * * @see java.util.Scanner#makeReadable(ReadableByteChannel, CharsetDecoder) * @since 0.8.1 */ public String[] name; /** * 说明方法的作用 * * @param name 这个name是 {@code String} 类型 * see参阅本类中其它方法...