Java中的输入异常错误
我一直收到一个异常错误。这是一个简单的代码。为什么会出现异常错误Java中的输入异常错误,java,Java,我一直收到一个异常错误。这是一个简单的代码。为什么会出现异常错误 class ThirdProgram { public static void main(String[] args) { System.out.println("Hello out there."); System.out.println("I will add two numbers for you."); System.out.println("Enter two whole numbers on a line
class ThirdProgram
{
public static void main(String[] args)
{
System.out.println("Hello out there.");
System.out.println("I will add two numbers for you.");
System.out.println("Enter two whole numbers on a line.");
int n1, n2;
Scanner keyboard = new Scanner(System.in);
n1 = keyboard.nextInt();
n2 = keyboard.nextInt();
System.out.println("The sum of those two numbers is");
System.out.println(n1 + n2);
}
}
使用时:
请执行以下操作:
步骤1
确保在左侧选择Java
步骤2
输入以下代码:
import java.util.Scanner;
class ThirdProgram
{
public static void main(String[] args)
{
System.out.println("Hello out there.");
System.out.println("I will add two numbers for you.");
System.out.println("Enter two whole numbers on a line.");
int n1, n2;
Scanner keyboard = new Scanner(System.in);
n1 = keyboard.nextInt();
n2 = keyboard.nextInt();
System.out.println("The sum of those two numbers is");
System.out.println(n1 + n2);
}
}
步骤3
在点击提交按钮之前,请单击单击此处输入输入(标准输入)或附加注释。单击后,将显示两个框。在第一个框(输入您的输入(stdin)
)中,输入:
确保在7之后按enter键
步骤4
然后点击提交。结果将在底部为您加载
注意:
您应该下载并使用IDE(如JGrasp或Eclipse)。大多数IDE都带有编译器,允许您在从某个控制台运行程序后输入。您会遇到什么异常(错误)?我知道import java.util.Scanner;需要添加.Exception在java.util.Scanner.throwFor(Scanner.java:907)在java.util.Scanner.next(Scanner.java:1530)在java.util.Scanner.nextInt(Scanner.java:2160)在java.util.Scanner.nextInt(Scanner.java:2119)在ThirdProgram.main(main.java:11)@user2569708我测试了你的代码,它工作完美,请张贴您的实际代码
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