switch(day){case1:System.out.println("星期一");break;case2:System.out.println("星期二");break;case3:System.out.println("星期三");break;} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 步骤4:使用break语句终止case分支的执行 在每个case分支的末尾添加b
4、break关键字的意思是中断,指结束switch语句,break语句为可选。 5、case语句可以有任意多句,是标号语句。 6、default语句可以写在switch语句中的任意位置,功能类似于if语句中的else。 执行流程:当表达式的值和对应case语句后的值相同时,既从该位置开始向下执行,一直执行到switch语句的结束,在执行中,如果遇到break...
```java switch (表达式) { case 值1: // 代码块1 break; case 值2: // 代码块2 break; // ... default: // 默认代码块 } ``` 二、switch语句的执行流程 1. 首先计算表达式的值。 2. 根据表达式的值,选择对应的case进行匹配。 3. 如果找到匹配的case,则执行对应的代码块,并在代码块末尾遇到br...
Java flow control tutorial shows how to control the flow of the program. We describe the usage of if, if else, else, while, switch, for, break, and continue statements.
Switch statements are a powerful way to control the flow of your code, making them extremely popular for handling multiple conditions in a more readable and efficient way compared to if-else statements. In this guide, we’ll walk you through the process of using switch statements in Java, fro...
//break; case 6: System.out.println("b"); break; case 2: System.out.println("c"); break; } */ /* int a=4,b =2; char ch = '+'; switch(ch) { case '-': System.out.println(a-b); break; case '+': System.out.println(a+b); ...
javaswitchbreakhelp + 9 If you don't use break statement then the program executes till end and all statements below the required statement would also be executed. 10th Sep 2017, 1:37 PM Lakshay + 7 It allows fall through the condition so you don't need to repeat the statements. For ...
To demonstrate this, let’s omit thebreakstatements and add the output to the console for each block: public String forgetBreakInSwitch(String animal) { switch (animal) { case "DOG": System.out.println("domestic animal"); default:
结论:switch-case语句,如果在每个case语句后面少加了break关键字。程序从该case分支继续执行下一个分支,直到遇见break后或执行完最后一个分支,switch语句执行结束。记住在case语句后面随手写上break语句,养成良好的习惯。 PS:对于此类问题,还有一个简单的解决办法:修改Eclipse的警告级别。Performaces->Java->Compiler->Er...
There is still a chance of improvement. In the above example, having the break statements does not look good. We canremove the break statements using the new arrow syntax. It is available sinceJava 13. Switch Statement with Arrow Syntax ...