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...
Example: Java switch Statement // Java Program to check the size // using the switch...case statement class Main { public static void main(String[] args) { int number = 44; String size; // switch statement to check size switch (number) { case 29: size = "Small"; break; case 42...
另外switch支持枚举，本质也是调用了枚举类的ordinal方法得到int值，所以你可以说switch表达式里面只支持int...
publicclassSwitchStatement{publicstaticvoidmain(String[]args){System.out.println("Monday is : "+isWeekDay(Day.TUE));System.out.println("Monday is : "+isWeekDay(Day.SUN));}publicstaticBooleanisWeekDay(Dayday){Booleanresult=switch(day){caseMON,TUE,WED,THUR,FRI->true;caseSAT,SUN->false;defa...
The switch statement falls under decision-making statements, allowing your program to choose different paths of execution based on an expression’s outcome. Grasping the Concept of ‘Fall Through’ in Switch Statements A unique characteristic of the switch statement in Java is the ‘fall through’ ...
switch 语句:用于根据一个表达式的值来选择执行多个分支中的一个。基本形式为: switch (表达式) { case 值1: // 当表达式的值等于值1时执行的代码块 break; case 值2: // 当表达式的值等于值2时执行的代码块 break; default: // 当表达式的值不等于任何一个case值时执行的代码块 ...
Java Switch Statements Instead of writingmanyif..elsestatements, you can use theswitchstatement. Theswitchstatement selects one of many code blocks to be executed: SyntaxGet your own Java Server switch(expression){casex:// code blockbreak;casey:// code blockbreak;default:// code block}...
示例:Java switch 语句 // Java Program to check the size// using the switch...case statementclassMain{publicstaticvoidmain(String[] args){intnumber =44; String size;// switch statement to check sizeswitch(number) {case29: size ="Small";break;case42: ...
Program Creek : Why String is immutable in Java? (opens new window) (opens new window) #String, StringBuffer and StringBuilder 1. 可变性 String 不可变 StringBuffer 和 StringBuilder 可变 2. 线程安全 String 不可变,因此是线程安全的 StringBuilder 不是线程安全的 ...
1. Switch Statements 1.1. Syntax The general form of a switch statement is – switch(expression){caselabelOne:statements;break;caselabelTwo:statements;break;caselabelThree:statements;break;default:statements;} The expression value must be one of the following 6 types: ...