使用jGRASP时线程“main”java.util.InputMismatchException中的异常

Question

我不断收到此错误：我正在为一个类创建的Mad Lib中的线程“main”java.util.InputMismatchException中的异常。我不是在问我如何使代码更好，只是为什么它不起作用。我只在第三个形容词后得到这个通知。这是我的代码：

import java.util.Scanner;

public class scanner_practice {
public static void main(String[] args) {
// Housekeeping
Scanner kb = new Scanner(System.in);
String word, story;
int intVar;
double dubVar;

// Introduction
System.out.println("Hi there! I have a great story to tell, but I don't remember some of the words.");
System.out.println("Will you help me? Hooray! Thank you! Here we go...");

// Instructions
System.out.println("\nWhen I ask you for a word or number, just type it. I'll handle the rest.");

// Collect values and bulid the story
System.out.print("Verb: ");
word = kb.next();

story = "I am Dr. Pink and I am destined to " + word;

System.out.print("Adjective: ");
word = kb.next();
kb.nextLine(); // Stops the program skipping
story += "the world! Unfortunately the \n" + "world is full of " + word;

System.out.print("Plural noun:  ");
word = kb.nextLine();

story += " " + word;


System.out.print("Adjective: ");
word = kb.next();

story += "that do not agree. So this is \n" + "my " + word;

System.out.print("Adjective: ");
intVar = kb.nextInt();

story += " plan: To start with, I'll need to build my " + intVar;

System.out.print("Adjetive ");
word = kb.next();

story += " hideout in an /n" + "abandoned " + word; 

System.out.print("Company Name: ");
word = kb.next();

story += " complex in the middle of the" + word; 

System.out.print("Type of Place: ");
word = kb.next();
story += ". All \n" + "the " + word; 

System.out.print("Adjective: ");
word = kb.next();
story += "will address me as 'The Great and " + word; 

System.out.print("Occupation (plural): ");
word = kb.next();
kb.nextLine(); // Stops the program skipping
story += " Dr. Pink.' I will \n" + "hire some  " + word; 

System.out.print("Plural event): ");
word = kb.nextLine();
story += "to design a machine to trigger \n" + "a huge  " + word; 
System.out.print("Plural noun: ");
word = kb.next();
story += " whenever I want it to. And if they don't want to build it, I \n" + "will capture their " + word; 

System.out.print("Something you hate doing: ");
word = kb.next();
story += " and threaten to make them " + word + "for hours on end. \n" + "Muwahahahahaha!"; 


// Print out the story
System.out.println(story);
}

}

我需要修理什么？这是今晚到期的...所以，如果我能快速得到答案，这将对我来说意味着世界！谢谢你！

Answer 1

学习如何解决错误与学习如何编码几乎一样重要:-)

A.首先查看the docs for InputMismatchException，了解发生的时间和原因：

由扫描程序抛出，表示检索到的令牌与预期类型的​​模式不匹配，或者令牌超出预期类型的​​范围。

B.查看完整的堆栈跟踪。跟踪提供有关错误的上下文，例如它出现的行以及调用的方法：

...在java.util.Scanner.nextInt（Scanner.java:2076） 在scanner_practice.main（scanner_practice.java:41）

C.查看错误行附近的java代码：

    line 40: System.out.print("Adjective: "); 

结论：“形容词”可能不是整数。