java 的switch循环 java循环输入switch 一、 键盘录入 在程序运送后,通过控制台程序输入一些数据。使用的是Scanner工具类。 使用步骤: 1、导包:import java.util.Scanner; 2、创建Scanner对象:Scanner scanner = new Scanner(System.in); Scanner 变量名 = new Scanner(输入); 变量名可以随便用,经常用input / sc...
1、case中两个或多个值进行一样的操作。 import java.util.Scanner; public class B { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int month = sc.nextInt(); if (month < 1 && month > 12){ System.out.println("输入错误"); } switch (month){ case 1...
//java中创建包用package相当于C#的命名空间namespace,java中导入包用import相当于C#中引入命名空间using import java.util.*;//导入包,*代表导入java.util包下面的所有类 public class Test { /***Scanner的使用***/ // public static void main(String[] args) { // Scanner input = new Scanner(System....
后端开发Java测试服务器面向对象云服务安全ECLiPSe数据结构泛型stringstreamlambdaArrayTreeSetSwitchbufferstatic重载HashMapequalsIterator流程控制switch-case数据类型枚举类型三元运算符循环结构scanner类异常处理变量初始化 视频内容是关于Java流程控制结构的讲解,包括switch-case语句和它的用法。视频介绍了switch-case中可以使用的...
Scanner key = new Scanner(system.in); key.nextLine(); Java中scanner close方法慎用的问题: https://blog.csdn.net/namewdy/article/details/105730573 解决办法: 全局使用一个scanner对象,并且只在整个程序运行结束的时候只关闭一次scanner。(推荐)在程序一开始时创建,在程序结尾的时候关闭 ...
importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println('Choosean option:1.Startgame2.Loadgame3.Exit');intchoice=scanner.nextInt();switch(choice){case1:System.out.println('Starting game...');// code to start a new ...
- This is a modal window. No compatible source was found for this media. Output Compile and run the above program using various command line arguments. This will produce the following result − NO OUTPUT Note:Since the given month's value is 13 and we did not use the "default" statemen...
Compile and run the above program using various command line arguments. This will produce the following result −Well done Your grade is C Example 2In this example, we're showing use of switch statement where cases are based on a int. We've created a variable grade. Based on value of ...
importjava.util.Scanner;classJavaExample{publicstaticvoidmain(String[]arg){booleanisVowel=false;;Scannerscanner=newScanner(System.in);System.out.println("Enter a character : ");charch=scanner.next().charAt(0);scanner.close();switch(ch){case'a':case'e':case'i':case'o':case'u':case'A'...
The alphabets A, E, I, O and U (smallcase and uppercase) are known as Vowels and rest of the alphabets are known as consonants. Here we will write a java program that checks whether the input character is vowel or Consonant using Switch Case in Java. If