importjava.util.Scanner;publicclassIfElseExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请输入岳小鹏的期末成绩:");intscore=scanner.nextInt();if(score==100){System.out.println("奖励:宝马 (BMW)");}elseif(score>=80&&score<=99){System.out.p...
This example shows how you can use if..else to "open a door" if the user enters the correct code:ExampleGet your own Java Server int doorCode = 1337; if (doorCode == 1337) { System.out.println("Correct code. The door is now open."); } else { System.out.println("Wrong code....
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...
2. 编写if语句 // 导入 Scanner 类用于输入importjava.util.Scanner;publicclassIfElseExample{publicstaticvoidmain(String[]args){// 创建 Scanner 对象用于读取用户输入Scannerscanner=newScanner(System.in);// 提示用户输入一个数字System.out.print("请输入一个数字: ");intnumber=scanner.nextInt();// 判断...
2. The If-else Example Let’s see an example of anif-elsestatement. In the following program, we check whether the employee’s age is greater than 18. On both bases, we print that the employee is a minor or an adult. intage=employee.getAge();if(age>18){System.out.println("Employe...
In this example, the condition number > 5 evaluates to true because number is 10. Therefore, the message "The number is greater than 5." is printed to the console.Example 2: if-else Statementpublic class IfElseExample { public static void main(String[] args) { int number = 3; if (...
}else{ greeting ="Good evening"; } Try it Yourself » If the first element in the document has an id of "myDIV", change its font-size: varx = document.getElementsByTagName("DIV")[0]; if(x.id==="myDIV") { x.style.fontSize="30px"; } Try...
如果有else语句与if语句关联,则在if代码块执行完毕后,检查else语句的条件表达式。如果else语句的条件表达式为true,则执行else代码块;否则,跳过else代码块,继续执行if语句之后的代码。 下面是一个简单的Java示例,演示了if条件语句的执行流程: publicclassIfExample{publicstaticvoidmain(String[] args){inta =10;intb ...
Example3_3(if-else语句) import java.util.*; public class Example3_3{ public static void main(String args[]){ Scanner reader=new Scanner(System.in); double a=0,b=0,c=0; System.out.print("输入边a:"); a=reader.nextDouble();
}else { price = 0; } 优化后 int price = condition1 ? 1 : (condition2 ? 2 : 0); 3、使用Optional 我们在代码中判null会导致存在大量的if-else,这个时候我们可以考虑使用Java8的Optional去优化。 优化前 public static void main(String[] args) { ...