Stringfruit="apple";switch(fruit){case"apple":System.out.println("Apple is red.");break;case"...
Java 语言不支持 boolean 和 long 类型的 switch，这两种类型在 C++ 语言都支持，且 bool 会被优化成...
Flow chart of the Java switch statement break Statement in Java switch...case Notice that we have been using break in each case block. ... case 29: size = "Small"; break; ... The break statement is used to terminate the switch-case statement. If break is not used, all the cases...
Switchhas evolved over time. New supported types have been added, particularly in Java 5 and 7. Also, it continues to evolve —switchexpressions will likely be introduced in Java 12. Below we’ll give some code examples to demonstrate the use of theswitchstatement, the role of thebreakstatem...
intnum=1;switch(num){case1:System.out.println('One');case2:System.out.println('Two');break;default:System.out.println('Not one or two');}#Output:#'One'#'Two' Java Copy In this example, we forgot to include abreakstatement after the first case. As a result, both ‘One’ and ‘...
一个switch语句可以包含任意数量的case标签,每个case标签中可执行若干条语句,通常以break语句结束。default标签为可选项,至多包含一个,用于处理case标签未列举的值。 switch(expression) {caseconstant_expression_1 :// statement_1break;caseconstant_expression_2 :// statement_2break;/* ... */default:// state...
statementsN// 当表达式的结果等于 valueN 时,则执行该代码 break; default: statements// 如果没有与表达式相同的值,则执行该代码 } switch 语句根据表达式的值,依次与 case 子句中的值进行比较: 如果两者相等,则执行其后的语句段,当遇到 break 关键字时则跳出整个 switch 语句。
'switch' is missing 'default' case 'switch' case fall-through 在Idea中,选择Preferences - Editor - Inspections - Java - Control flow issues,将以下检查标记为Warning: Fallthrough in 'switch' statement 'switch' statement without 'default' branch...
Java的选择语句: if if-else nested-if if-else-if switch-case jump – break, continue, return 1. if: if语句是最简单的决策语句。它用于决定是否执行某个语句或语句块,即如果某个条件为真,则执行语句块,否则不执行。 语法: 代码语言:javascript ...
作为statement的switch没有返回值,所以我们不能写出这样的代码 x =switch(y) { ... } 如果需要根据不同的条件给某个变量赋值,我们以前只能这样做 String word = ""; switch(num) {case1: word= "One";break;case2: word= "Two";break;default: ...