参见jls-15.25,摘要如下: If the second and third operands have the same type (which may be the null type), then that is the type of the conditional expression. If one of the second and third operands is of primitive type T, and the type of the other is the result of applying boxing ...
In Java, if statement is used for testing the conditions. The condition matches the statement it returns true else it returns false. There are four types of If statement they are: 在Java中,if语句用于测试条件。 条件与返回true的语句匹配,否则返回false。 有四种类型的If语句: For example, if we...
# 例子：验证用户名和密码是否同时符合要求username = input("请输入用户名：")password = input("请输入密码：")# 判断用户名和密码是否同时满足条件if len(username) > 5 and len(password) >= 8: print("用户名和密码符合要求，验证通过。")else: print("用户名或密码不符合要求，请重新输入。")...
if( if any thing here true ){ do the thing here. } else if ( else if other thing true ){ Do the function here } else { Do if every booleans above false } 9th May 2019, 9:17 AM Basel.Al_hajeri?.MBH() + 4 IF ELSE IF (×any number of times) ELSE Basically you'...
这两种格式是一样的。if else 结构 简写格式: 变量 = (条件表达式)?表达式1:表达式2; 三元运算符: 好处:可以简化if else代码。 弊端:因为是一个运算符,所以运算完必须要有一个结果。 3.格式三 if(判断条件1){ 执行的代码块1; }elseif(判断条件2){ ...
}elseif(condition2) { //block of code to be executed if the condition1 is false and condition2 is true }else{ //block of code to be executed if the condition1 is false and condition2 is false } Example If time is less than 10:00, create a "Good morning" greeting, if not, but...
}else if(判断条件3){ 满足条件语句3 }...else{ 执行不满足条件的语句 } 2、举例 2.1、格式一 题目:提示用户输入一个人数,如果该整数是5的倍数,打印“5的倍数”如果是2的倍数打印“2的倍数” 1importjava.util.Scanner;2publicclassDemo9 {3publicstaticvoidmain(String[] args) {4Scanner sc=newScanner...
```java import java.util.Scanner;public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in);System.out.print("Enter first number: ");double firstNumber = scanner.nextDouble();System.out.print("Enter second number: ");double secondNumber = ...
问使用Java 8流处理嵌套的if/else语句EN如果不能保证至少有一个值是非空的，那就有点难看了，但也不...
In this tutorial, you'll learn how to use the Java if else statement to execute a code block if a condition is true and another code block otherwise.