Java Scanner class is part of the java.util package. It was introduced in Java 1.5 release. The Scanner is mostly used to receive user input and parse them into primitive data types such as int, double or default String. It’s a utility class to parse data using regular expressions by g...
// 1.导包importjava.util.Scanner;publicclassMyBlog{publicstaticvoidmain(String[]args){// 2.创建Scanner sc=newScanner(System.in);// 3.使用String str=sc.next();System.out.println("我们输入了一个字符串形的:"+str);int num=sc.nextInt();System.out.println("我们输入了一个整数形的:"+num...
ScannerDemo.java 文件代码: importjava.util.Scanner;classRunoobTest{publicstaticvoidmain(String[]args){System.out.println("请输入数字:");Scannerscan=newScanner(System.in);doublesum=0;intm=0;while(scan.hasNextDouble()){doublex=scan.nextDouble();m=m+1;sum=sum+x;}System.out.println(m+"个数...
1 首先，创建一个class 2 创建一个main方法，导入java.util.Scanner(一定要写在package下面！！！）3 输入以下代码，注释部分详细说明了每一行代码的用途。package com.Test;import java.util.Scanner;public class MyClass {public static void main(String arg[]){System.out.println("请输入学科"); //输出...
import java.util.Scanner;public class ScannerDemo { public static void main(String[] args) { Scanner scan = new Scanner(System.in);// 从键盘接收数据 // next方式接收字符串 System.out.println("next方式接收：");// 判断是否还有输入 if (scan.hasNext()) { String str1 = scan.next();System...
An instance of this class is capable of scanning numbers in the standard formats as well as in the formats of the scanner's locale. A scanner's "initial-locale">initial locale is the value returned by thejava.util.Locale#getDefault(Locale.Category) Locale.getDefault(Locale.Category.FORMAT)me...
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 ...
import java.util.Arrays; public class MyScanner { public static void main(String[] args) { //创建对象 Scanner sc = new Scanner(System.in); System.out.println("输入数据:"); //多行输入 int n = sc.nextInt(); int m = sc.nextInt(); ...
importjava.util.Scanner;publicclassGetBodyFat{publicstaticvoidmain(String[]args){// 初始化腰围floatwaistline=0f;// 初始化体重floatweight=0f;// 声明浮点型参数 a,b,bodyFatWeight(脂肪重量)floata,b,bodyFatWeight;Scannerscanner=newScanner(System.in);System.out.println("请输入您的腰围(cm):");if...
1.Scanner类: a.定义: java.util.Scanner 是 Java5 的新特征,我们可以通过 Scanner 类来获取用户的输入。 Scanner s = new Scanner(System.in); 我们可以通过 Scanner 类的 next() 与 nextLine() 方