java import java.util.Scanner; public class PowerCalculator { public static void main(Strin // 创建 Scanner 对象以读取用户输入 Scanner scanner = new Scanner(System.in); // 提示用户输入一个数字 System.out.print("请输入一个数字: "); String inputNumber = scanner.nextLine(); // 提示用户输入...
Scanner 是最简单的方式,适合读取基本类型(如 int、double)和字符串。 java import java.util.Scanner; okxanzhuo.cn public class KeyboardInputWithScanner { public static void main(String[] args) { // 创建 Scanner 对象,绑定到 System.in(键盘输入) Scanner scanner = new Scanner(System.in); System....
Java Scanner is a utility class to read user input or process simple regex-based parsing of file or string source. But, for real-world applications, it’s better to use CSV parsers to parse CSV data rather than using the Scanner class for better performance. Reference:API Doc,Regex in Jav...
importjava.util.Scanner;classMain{publicstaticvoidmain(String[]args){ScannermyObj=newScanner(System.in);System.out.println("Enter name, age and salary:");// String inputStringname=myObj.nextLine();// Numerical inputintage=myObj.nextInt();doublesalary=myObj.nextDouble();// Output input by ...
publicclassText{publicstaticvoidmain(String[]args){Scanner input=newScanner(System.in);System.out.println("请输入一个字符串(中间能加空格或符号)");String a=input.nextLine();System.out.println("请输入一个字符串(中间不能加空格或符号)");String b=input.next();System.out.println("请输入一个整...
import java.util.Scanner; public class Test1 { public static void main(String[] args) { //创建Scanner类型的对象(注意,要导包) //System.in:标准的输入流,默认指向键盘 Scanner sc1 = new Scanner(System.in); //接受整数 System.out.println("请输入一个整数"); //为了解决(避免)InputMismatchExcept...
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:"); ...
text/java复制 {@code String input = "1 fish 2 fish red fish blue fish"; Scanner s = new Scanner(input); s.findInLine("(\\d+) fish (\\d+) fish (\\w+) fish (\\w+)"); MatchResult result = s.match(); for (int i=1; i<=result.groupCount(); i++) System.out.println(re...
hasNextLine():Returns true if there is another line in the input of this scanner. This method may block while waiting for input. The scanner does not advance past any input.(当执行该方法时,会有堵塞现象,待用户输入时,遇到换行符则返回true) 4.实例 import java.util.Scanner; public class Test...
next(): read the input only till the space. It can’t read two words separated by space. Also, next() places the cursor in the same line after reading the input.(next()只读空格之前的数据,并且cursor指向本行) next() 方法遇见第一个有效字符(非空格,非换行符)时,开始扫描,当遇见第一个分隔...