2,3};*输出结果:* "[1, 2, 3]"publicstaticvoidmain(String[] args) {int[] arr = {1,2,3};//定义一个数组String str = "[";//初始化字符串数组的值为“[”for(inti = 0; i < arr.length; i++) {//遍历数组if(i == 2){//若遍历到最后时 ,需要做的处理str = st
import java.util.Scanner;/ (1)利用键盘录入，输入一个字符串 (2)统计该字符串中各个字符的数量 / public class InputString { public static void main(String[] args) { //获取键盘输入的字符串 Scanner sc=new Scanner(System.in);System.out.println("请输入一个字符串！");String st=sc....
Scanner scanner = new Scanner(System.in); 接下来我们演示一个最简单的字符串输入,并通过 Scanner 类的 next() 与 nextLine() 方法获取输入的字符串: //创建Scanner对象 Scanner scanner = new Scanner(System.in); System.out.print("使用next()方法接收用户的输入:"); String str = scanner.next(); Sy...
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.*;//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"); ...
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...
Both hasNext and next methods may block waiting for further input. Whether a hasNext method blocks has no connection to whether or not its associated next method will block. The findInLine(java.lang.String), findWithinHorizon(java.lang.String, int), and skip(java.util.regex.Pattern) methods...
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:"); ...
import java.util.Scanner; class Main { public static void main(String[] args) { Scanner myObj = new Scanner(System.in); System.out.println("Enter name, age and salary:"); // String input String name = myObj.nextLine(); // Numerical input int age = myObj.nextInt(); double salary...
import java.util.Scanner; publicclassMain{ publicstaticvoidmain(String[] args){ Scanner scanner = new Scanner(System.in); // 创建一个 Scanner 对象来读取标准输入 System.out.println("请输入一个整数:"); if (scanner.hasNextInt()) { // 检查下一个输入是否是整数 int num = scanner...