importjava.util.Scanner;publicclassDaysInMonth{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入月份(1-12):");intmonth=scanner.nextInt();System.out.print("请输入年份:");intyear=scanner.nextInt();intdays;switch(month){case1:case3:case5:case7:c...
java switch case 用法详解 1.普通用法 public static void test(){ int i = 5; switch (i){ case 5:...public static void test(){ int i = 11; switch (i){ case 5:case 11:case...public static void test(){ int i = 11; switch (i){ case 5:case 11:case 12...public static voi...
图片来源于java8in action 智能推荐 Java8中Map接口的getOrDefault方法 今天在查看org.springframework.core.io.support.SpringFactoriesLoader的源码的时候,看到了下面这个地方: 无意中发现了上图中的getOrDefault方法,于是到对应的源码中看一看: 很明显:如果map中含有指定的key,就返回该key对应的value,否则使用该方法...
A unique characteristic of the switch statement in Java is the ‘fall through’ behavior. When a match is found in the case values, and there’s no break statement to terminate the current case, Java will execute all subsequent cases until it encounters a break statement or reaches the end ...
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原文:Anatomy of a Program in Memory Jan 27th, 2009 Memory management is the heart of operating systems; it is crucial for both programming and system administration. In the next few posts I'll cover mem... 程序在内存中运行的奥秘 内存管理是操作系统的核心功能,无论对于开发者还是系统管理员内存...
importjava.util.Scanner;publicclassSeasonChecker{publicstaticvoidmain(String[]args){Scannerinput=newScanner(System.in);System.out.print("请输入一个月份:");Stringmonth=input.nextLine();switch(month){case"1":case"2":case"12":System.out.println("当前是冬季");break;case"3":case"4":case"5":...
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...
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...
When Java reaches abreakkeyword, it breaks out of the switch block. This will stop the execution of more code and case testing inside the block. When a match is found, and the job is done, it's time for a break. There is no need for more testing. ...