package hj; import java.util.Scanner; import.java.util.Scanner; public class Example3_2 { public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("请输入数学成绩"); Scanner reader = new Scanner(System.in); if(math>60) { System.out.println("数学及格了"); } else { System.out.println("数学不及格"); } } System.out.println("我在学习if-else语句"); }
时间: 2024-02-21 14:02:01 浏览: 26
这段代码有语法错误,第6行缺少一个空格,应该为"import java.util.Scanner;"。同时,第10行的变量math没有定义,应该先定义再使用。最后,第14行的花括号位置不正确,应该放在if语句的后面。正确的代码应该是这样的:
```
package hj;
import java.util.Scanner;
public class Example3_2 {
public static void main(String[] args) {
System.out.println("请输入数学成绩");
Scanner reader = new Scanner(System.in);
int math = reader.nextInt();
if(math > 60) {
System.out.println("数学及格了");
}
else {
System.out.println("数学不及格");
}
System.out.println("我在学习if-else语句");
}
}
```
相关问题
import java.util.Scanner; package base; public class scaner { public static void main(String[] args) { } } 改错
在代码的开头处移除多余的import语句,将package语句放在import语句后面,同时将类名从"scaner"改为"Scanner",修正后的代码如下:
```java
package base;
import java.util.Scanner;
public class ScannerExample {
public static void main(String[] args) {
// 在这里编写你的代码
}
}
```
请注意,你需要在`main`方法中编写你的代码,这只是一个修正后的代码框架。
import java.util.Scanner;
As an AI language model, I cannot perform input/output operations or run Java code. However, here is an example of how the Scanner class can be used in Java to read user input from the console:
```
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your name: ");
String name = scanner.nextLine();
System.out.println("Hello, " + name + "!");
scanner.close();
}
}
```
In this example, we create a Scanner object to read input from the console using `System.in`. We then prompt the user to enter their name and read their input using the `nextLine()` method of the Scanner class. Finally, we print out a greeting using the user's name. Note that we close the Scanner object at the end to prevent resource leaks.