我们可以用 javap 命令查看编译的字节码（bytecode）。引用的比较对应 if_acmpeq、if_acmpne 两条指令，...
字节码如下: Code:0: iconst_31: istore_12: iload_13: tableswitch{//0 to 140:76;1:87;2:153;3:98;4:153;5:109;6:153;7:153;8:153;9:153;10:120;11:153;12:153;13:131;14:142;default:153}76: getstatic #2;//Field java/lang/System.out:Ljava/io/PrintStream;79: ldc #3;//Stri...
为什么不支持 long？在Java中，Switch是一种控制语句，用于根据给定的表达式的值执行不同的操作。它可以...
Java enum枚举配合switch使用 return code; } public String getValue() { return value; } // 根据code返回枚举类型,主要在switch...中使用 public static TypeEnum getByCode(Integer code) { for (TypeEnum optionTypeEnum : values...)); System.out.println(TypeEnum.type3.getCode()+ "_" + Type...
Java Copy In this example, we have a switch statement that checks the value of the variableday. Depending on the value, it executes a different code block. Ifdayis 1, it prints ‘Monday’. Ifdayis 2, it prints ‘Tuesday’. In our case,dayis 3, so none of the cases match and not...
还是用JDK自带的javap,看一眼bytecode吧 代码语言:txt AI代码解释 0: iconst_0 1: invokestatic #2 // Method java/lang/Integer.valueOf:(I)Ljava/lang/Integer; 4: astore_1 5: aload_1 6: invokevirtual #3 // Method java/lang/Integer.intValue:()I ...
Code: 根据你键盘录入的字符串,判断是否有满足要求的,如果有就输出。 否则,提示有误。 String s = sc.nextLine(); import java.util.Scanner; class SwitchTest3 { public static void main(String[] args) { //创建键盘录入对象 Scanner sc = new Scanner(System.in); ...
Code: 根据你键盘录入的字符串,判断是否有满足要求的,如果有就输出。 否则,提示有误。 String s = sc.nextLine(); import java.util.Scanner; class SwitchTest3 { public static void main(String[] args) { //创建键盘录入对象 Scanner sc = new Scanner(System.in); ...
Java Switch Statement 1. Overview In this tutorial, we’ll learn what theswitchstatement is and how to use it. Theswitchstatement allows us to replace several nestedif-elseconstructs and thus improve the readability of our code. Switchhas evolved over time. New supported types have been added...
The switch statement allows us to execute a block of code among many alternatives. In this tutorial, you will learn about the switch...case statement in Java with the help of examples.