importjava.util.Scanner;publicclassMenuExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请选择操作:");System.out.println("1. 新建");System.out.println("2. 打开");System.out.println("3. 保存");System.out.println("4. 退出");intchoice=scann...
Java switch语句落空通过所有case语句 下面我们来看看java switch语句落空通过所有条件,即 case 子句中的所有条件都未能匹配。也就是如果不在 switch case 下使用break语句,则它在第一个匹配之后也会执行接下来的所有 case 中的语句。 示例: public class SwitchExample2 { public static void main(String[] args) ...
在平时的java学习中,switch语句也是很重要的一部分,今天就简单的聊一下switch语句。 switch语句是Java的多路分支语句。它提供了一种基于一个表达式的值来使程序执行不同部分的简单方法。因此,它提供了一个比一系列if-else-if语句更好的选择。switch语句的通用形式如下: switch (expression) { case value1: // sta...
default: Executes if no case value matches the expression. Examples Example 1: Basic Usage publicclassSwitchExample{publicstaticvoidmain(String[]args){int day=3;switch(day){case1:System.out.println("Monday");break;case2:System.out.println("Tuesday");break;case3:System.out.println("Wednesday"...
java填空在switch(expression)语句中,expression的数据类型不能是___。 为什么? 答案 不能为引用类型、自定义类型。基本类型中,只能为整型,且有大小限制 1、整型:最大为int,可以是byte,char 2、还可以为枚举类型,这个可以是自定义的枚举类型。1、2以外的都不行相关推荐 1java填空在switch(expression)语句中,expre...
The following example is perfectly valid and will compile: switch (month) { case JANUARY, JUNE, JULY -> { return 3; } default -> { return 0; } } However, the following code will not compile, as we are trying toreturnoutside of an enclosing switch expression: ...
To learn more, visit Java break Statement. default Case in Java switch-case The switch statement also includes an optional default case. It is executed when the expression doesn't match any of the cases. For example, class Main { public static void main(String[] args) { int expression =...
public interface SwitchExpressionTree extends ExpressionTreeA tree node for a switch expression. For example: switch ( expression ) { cases } See Java Language Specification: 15.29 Switch Expressions Since: 12Nested Class Summary Nested classes/interfaces declared in interface com.sun.source.tree....
SyntaxGet your own Java Server switch(expression){casex:// code blockbreak;casey:// code blockbreak;default:// code block} This is how it works: Theswitchexpression is evaluated once. The value of the expression is compared with the values of eachcase. ...
The value of the expression is compared with the values of each case. If there is a match, the associated block of code is executed. If there is no match, the default code block is executed. Example ThegetDay()method returns the weekday as a number between 0 and 6. ...